Chevy Vortec Multiple Misfire Code P0300 - Cheap Fix (Crankshaft Sensor Relearn)

[@rvirgil3771]

Thank you for sharing this. This worked for me on my 2004 GMC Sierra 2500 6.0L V8. Anytime I put a load on the engine pulling a trailer or during heavier acceleration, I would get a P0300 misfire. Never ever did it identify a cylinder so I could never isolate it. I had 150,000km (95000Miles). I replaced all the plugs, wires, Distributor cap and checked each injector with no change. My brother in law is a GM trained mechanic so I got him to bring his Snap-On Code scanner over. He set it up and it took about 30 seconds to do the re-learn. I have pulled my trailer and tried several variants of re-creating the scenarios that would produce the code. Guess what? No codes ever since the re-learn. My brother in law was not even aware of this.

[@titanlawnlandscape7783]

Glad to hear it worked!

[@LuckyGuessGarage]

Thank you. I've been working on trucks for 30 years and had the $1200 dollar autel scanner. I had a lifter tick and a miss on 2 and 7. The truck sat for years but started right up and ran relatively well with the miss. I tore the whole top of the motor apart, replaced 2 weak lifters and Felpro gaskets. No tick no miss and that check engine light flashed at highway speed. My heart sank. I pulled out the scanner and it wouldn't work because the engine temperature HAS TO BE A MINIMUM OPERATING TEMPERATURE! I'm an idiot and thought that meant low. It has to be at regular operating temp. Runs great no flash. Thanks man!

[@julcast1229]

No mechanic could fix my astro van i spent a lot of money in parts and labor and lost a lot of days of work i paid $120 for a relearn and my van runs better then before i can go back to work now Thx!

[@riprob93]

Dude, you're the best!! I was chasing this misfire on my 2005 GMC Yukon for some time now, and thanks to you I got it finally fixed!! Much Respect. I did the crankshaft relearn with my scanner, and Bam!!! Running like new again. The problem was weird because I had no shaking or obvious misfire by any plug, coil or wires. I was thinking it was fuel injectors, but before I ripped all that out, I did what you said, and it all worked out! Who would've thought something like a crankshaft relearn would fix this annoying code. Great job!!!

[@titanlawnlandscape7783]

Thank you!! Glad it worked

[@mmorgan901]

what type of scanner do u have if u don't mind me asking

[@riprob93]

@@mmorgan901 The scanner I used is the XTOOL (A30 PRO DEVICE)

[@mmorgan901]

@riprob93 how much did you pay for it

[@ronnief536]

Thanks!!! After hours of searching and plug a coil replacement I found your video and luckily my dad has a snap on scanner and I did the crank relearn and boom the truck is running smoother then ever!!!!! Thanks again

[@titanlawnlandscape7783]

Thats great news!

[@colby7x]

Brooo I can’t thank you enough, I been chasing this code for a year now it went away after changing the spark plugs but then it reoccurred a bout a month after. No i haven’t tried this yet, but I have a good feeling this is my issue. Thanks again no one seemed to address this problem im most definitely subscribing.

[@titanlawnlandscape7783]

Good luck. Let us know if it works

[@IkeCoblentz]

Did it work?

[@tyronesimmons538]

I have a ss silverado random misfire changed pugs wires coil packs map sensor still

[@tyronesimmons538]

Can anyone help

[@colby7x]

@@tyronesimmons538 if it sputters under heavy acceleration it can be 1 or multiple fuel injectors which was my problem even if you say you cleaned them please PLEASE don’t underestimate the possibility, I learned the long and expensive way lol

[@I-watch-at-2x]

For the record, I had the same issue. Replaced it, but I disconnected the battery while I replaced it. Didn't do a relearn at all. Except for the computer reset and driving it for 20 minutes. Haven't had the issue since. 2002 5.3 Vin T. I wish more people knew about the issue though, I spent too much at different shops to incorrectly diagnose, only to have to discover and fix the issue myself.

[@titanlawnlandscape7783]

Good work!

[@usmc0311]

What did you replace

[@I-watch-at-2x]

@@usmc0311 the crank shaft position sensor. You know, what the video is about?

[@pantherplatform]

What a deal. One of my repeat customers brought his 5.3 Sierra in yesterday for this issue and so far everything has checked out. Gonna do the relearn as soon as I get to the shop.

[@titanlawnlandscape7783]

Let us know if it works!

[@larrytemen4789]

6 months and no answer. Guess it didn’t work lol

[@h0ot3r]

So did it work? Lol.

[@SS-vp4eu]

He had to sell his phone because the shop charged him 120$ for 5 minute pressing of buttons

[@Born-Again-Warrior]

@@SS-vp4eu 120$ back in 2019. That's not accounting for inflation nowadays lol.

[@carloschavarria4028]

I had 6 months looking solution for this code p0300 . Today I did the crankshaft position sensor relearn. No more code Truck is running perfect.. tank you!!!

[@titanlawnlandscape7783]

That's good news!

[@ACorganicks]

Hell yea. I did the same thing, wires and plugs and no change but engine runs smooth! Thanks man, I hope the tools you can borrow/rent from OReillys has the relearn and this fixes the flash!!!

[@vmelo28]

Checking this out tomorrow. Had this issue for a while and nothing comes up, I’m hoping this is it.

[@vmelo28]

Just got it taken care of. This was beyond helpful, my truck is back to its old self. Thank you so much.

[@titanlawnlandscape7783]

Glad to hear it worked!

[@JESUSMORALES-rd4qt]

Hello my friend... wow.. found your video .... lot months and head pain ... my problem misfire no engage tcc.. change transmisión 2 times same problem flashing check engine .. and rpm 2500 at 50 mph ... yesterday .. see your video and today friday 12/08/23.. go my friend shop he have maxisis scanner ... relearn ckp and my problem no more works very good rpm down no flash more 🎉🎉🎉🎉🎉 thnks a lot for your help .. im sorry for my english 😅 ... i from mexico again thanks

[@titanlawnlandscape7783]

Glad to hear it worked!

[@bigman4116]

I did this today and it worked on my 2003

[@2slofouru]

How long has it been working correctly now? Usually 0300 is related to something all cylinders share, like an intake leak or the maf not showing enough flow so the ecm doesn't send enough fuel. Apparently though, those engines have tons of possible causes for that code.

[@jonmo2694]

Mine check engine started blinking and losing RPMs, i got in town and was running rough, pulled over and started it and it ran real rough and stalled.Got a PO300 code, got towed and verdict was the ignition control module and the MAP sensor was fried.05 Pontiac grand prix.

[@smoothctr1]

It works! 2005 5.3 here. Same symptoms. Thank You for posting this.

[@titanlawnlandscape7783]

Awesome! Glad to hear it.

[@rickhauer3624]

I have a 1997 GMC Sierra 7.4 and had to replace the crank position sensor to fix a random hard start problem with a P1351 code. It fixed the problem but left me with a P0300 random misfire code that was never there before. The problem is I can't find a OBD (bidirectional) scanner that will relearn a crank sensor on a 1997 GMC. Any ideas on a particular scanner that will actually do it on a 1997 GMC?

[@carllattimore8227]

Good information on the P0300. I also agree on the diesel issue. Unless you are hauling extremely large loads its not worth it. The 6.0 Powerstroke has been my worst experience thusfar.

[@titanlawnlandscape7783]

I had a 6.0 Powerstroke. It was a pile! Buying all gas now and my issues are gone.

[@ExCELGamingandMods]

@@titanlawnlandscape7783 Don't let a 6.0 powerstroke make up you're entire opinion of diesels. L6 cummins engines are just about the most reliable engines there are.

[@titanlawnlandscape7783]

I still have 7.3L lowerstroke and love it!!

[@ExCELGamingandMods]

@@titanlawnlandscape7783 Yes they were great as well.

[@thesilvas5657]

I have the same issue. Changed the crankshaft sensor. But I can’t find the scan tool that will allow the crankshaft relearn. Should I just take it to any shop and ask them to do the relearn with their shop scanner?

[@jeromeshockley9572]

I want to say thank you so much for this video. Just purchased a 03 Escalade Ext. a few days ago at 159,000 miles on her. Check engine light started flashing at around 2400 R.P.M.'s. I will try the same operation you did. I'm still going to do some preventive maintenance tasks (replace spark plugs, coils, fuel filter, etc.) for this truck. Once again, thanks.

[@titanlawnlandscape7783]

Thanks for the comment! Best of luck.

[@titanlawnlandscape7783]

Did it work?

[@v.brian559]

Did it work once you changed the crankshaft sensor ?

[@carolinem.9800]

chevy vortex 3500 express. throwing steady p0300 MIL at high rpms highway speed. did 2 cK pos sensor replacements w re learns (1st sensor was bad. ) . each time did a relearn for $$. after 500 milestone 2nd sensor, P 0300 steady MIL came back. 3rd try: when you pull Ck Pos sensor BE sure to clean all the corrosion off near tone ring etc and where sensor seats. cleaning the corrosion took away the p0300. . .

[@gochuckyourself-yf2rz]

And you're supposed to go to the dealership but most of the time you can just run a wire from your positive battery cable to your negative battery cable making sure you isolate them from the battery and it will clear your CPU and when you reattach your battery wires your CPU will do the relearn for you for your crankshaft position sensor that's how I cleared mine because I took it to the dealer and they refused to clear it they just cleared the code but the code is in the memory of your CPU and will continue . Unless you clear it from the memory of the CPU .

[@jasonrogers9169]

Random misfire affects more than one cylinder. 99 percent of the time it's not a multiple malfunction such as two or more spark plugs going bad at one time or two coils unless it's the double coil that sparks two cylinders or two injectors going bad at the same time. Now that being said if the plugs have never been changed in like 10 years or so the odds would be there probably all misfiring but a vehicle that's maintained and sudden random misfire is going to affect the entire engine and usually more than one cylinder. The computer is trying to counter the misfire so as to not leave you stranded or breaking down in an intersection and so on. The light flashes to get your attention and let you know something serious is going on and it's doing all it can do to get you out of possible harms way. On the 4.2 with the same codes running poor at best I have found on two of them cracked egr valves. Practically unnoticeable until they were cleaned and gasket surface buffed. No egr codes. Third one the entire plastic intake bolts were backing out. You could turn them with your fingers. Egr valves and bolts tightened computer reset no codes and run just fine. Just throwing it out there.

[@adamwilmshorst8375]

I own a small hardscape business and the 2000-2007 are the best work trucks. Lq4 6.0 and the 4l80 are cheap, easy to fix and reliable. Unlike any ford work truck we have ever had. Tritons and power jokes are trash! This video was helpful I’m having this issue with my 2500 hd I just took back all of my lifetime warranty stuff all of my packs wires plugs injectors crank and cam sensor. Then we started to get a misfire on the hw and under load. Motors two years old and this is the only possible issue thanks. And from a fellow small business owner these are the best bang for your buck work trucks. Or have fords and pay lots of money for a pretty wrapped pos. No thanks been there done that never again .

[@titanlawnlandscape7783]

Ever since I switched over to the 6.0 vortecs my maintenance cost have dropped and reliability has been better. They have given me the best return on my money out of all the trucks I've owned.

[@BobbyFigliola]

Nuttin better for maint and operational costs than the 6.0 gas....cept for the 11.5 mpg. im ok with that....other than oil........

[@capecodwoody]

Thanks bud I've done everything but that I'll give it a shot I really like this van I do not want to get rid of it

[@dougsavery5442]

Did it work

[@caesarcardenas274]

Was the vehicle running rough at all?

[@TarHeelResin]

Heck imma try it. Changed plugs and wire, and all of my coils are fine.

[@titanlawnlandscape7783]

I changed the wires and the plugs before I did the relearn and the wires and the plugs were not the issue. It continued to have the issue until I just had the sensor relearned. Hopefully the relearn fixed your issue!!

[@TarHeelResin]

@@titanlawnlandscape7783 Gonna buy a scan tool that does this. Needed a good excuse to get a scanner anyways. Thanks man

[@titanlawnlandscape7783]

@@TarHeelResin Let me know if it works!!

[@TarHeelResin]

@@titanlawnlandscape7783 Did not work but found out it was my catalytic converters. One side is bad, hit it with a rubber hammer and it rattles other side is solid. But, my misfire is what cause the cats to go bad. Misfire happened while driving

[@titanlawnlandscape7783]

@@TarHeelResin thanks for the update! How's it running now?

[@leoneltejeda9330]

Bro i spend more then 3 thousand dollars of parts and labor chasing this code if tomorrow a get this done and it works ima going to buy you beers 🍺 for a month 😂🤞

[@titanlawnlandscape7783]

Did it work???

[@mr.kool_aid_m3218]

Yeah did it work?

[@linovelasquez4513]

Did it work?

[@Edi-01]

Did he buy you the 🍻

[@Rb-te3ou]

Must’ve worked lol

[@martinvillalon3701]

Would this prevent the truck from starting you think? Cause I can't get my truck to start. And I got PO300 code, changed the fuel filter and pump, spark plug and wires are new.

[@titanlawnlandscape7783]

Mine always started. Just had problems when it was running.

[@JelYah404]

@titan lawn care. Disconnect the battery or relearn crankshaft sensors?

[@dajourdixon5567]

Did you replace the Camshaft sensor as well, or just the crankshaft

[@titanlawnlandscape7783]

We just did a relearn.

[@whiteboyfromernul]

man ive been chasing that 300 code for months,doing the same thing with my 4.3 vortec,changed 02 sensors and cats,distributor,rotor,cap,coil,plugs and wires,cam and crank sensor,fuel filter,spider injector,throttle position,map and maf sensors,coolant sensor,idle solenoid,manifold absolute pressure sensor,checked fuel pressure,vacuum,spark,chased wire looms from every possible contact point,i have the blue driver with live data and everything appears within specs,probably forgot a few others ive done and still cel flashes when accelerating,going up a hill or cruising above 65mph,etc,if this doesnt fix it next on my list is gas and a match!

[@titanlawnlandscape7783]

Keep me posted!! Hopefully it fixes the issue

[@GorillaTwat]

Any news?

[@underspeedlimit8969]

I’ve got the same engine and did pretty much everything you did including spider fuel injectors. Gave up for several months. Worked several hours recently and got it started. Flashing cel comes on once warmed up and below 1,2000 rpms. Stalls if I don’t keep idle steady on accelerator or try to shift in any gear other than P and N. It all started over a year ago after I changed intake manifold and valve cover gaskets. What the heck could have happened? Or was it just coincidence? So the next day it would turn over. Click and clunk. That’s it. Depressing. Gonna do smoke leak test next.

[@whiteboyfromernul]

After all that,discovered the threaded insert that holds crank position sensor into the"plastic"timing cover had become loose,the sensor wasn't held tight and allowed it vibrated loosely,replaced it with a helicoil,thread repair,and liquid steeled it in place with a new sensor,had my buddy relearn the sensor with his snap on scanner,couple hundred miles later and still no codes,at least now I know what I've got in it and learned a hell of a lot

[@whiteboyfromernul]

@@underspeedlimit8969 have you checked the vacuum line from the intake to the heater control and check the crank sensor for looseness and the harness that connects to it

[@FLbowtieguy]

Whathog your truck just shut off engine light flashing p0300 ...now it starts nut wont stay running. Crank sensors?

[@jimboslice7389]

Same issue and solved the issue also.

[@titanlawnlandscape7783]

Nice work!

[@numbrjuan1936]

After installing a cps from ebay (no relearn) My truck has little power on acceleration from a stop. Did your do that?

[@jaguarblack4332]

I'm just so out of luck on everything. All in one day I replaced crankshaft sensor, spark plugs, air filter, and cleaned throttle while it was still connected. Now my car is very hard to start and when it does I can't accelerate like it's stuck in one gear. I just paid Nissan 1999 for a new flex pipe with cataylic converter and now I'm broke. Is there a way to relearn all that I have fixed by disconnecting the battery in some way? 😩😩I'm exausted

[@titanlawnlandscape7783]

Oh man!

[@birdnestington220]

Yea same issue replaced everything and still have the issue, but mine happens at low rpm’s

[@Lightning7474.]

I changed my mass airflow sensor and it fixed the problem.

[@titanlawnlandscape7783]

Thats an easy fix!

[@TomMack530]

where did you buy the flat bed at thanks, i need a new bed for my 2005 1500

[@titanlawnlandscape7783]

I picked up the flatbed from a dealer in southern Iowa.

[@ryanharris018]

When you where having this problem did you notice it not going into overdrive due to the code flashing. I've replaced so much stuff trying to fix my truck and this is about my last hope.

[@titanlawnlandscape7783]

Yes, mine would not go into over drive.

[@atomicdmt8763]

solid! trying this soon.............. i believe there is a driving proceedure also (scanner free)

[@titanlawnlandscape7783]

Yeah! I'm not sure if you can do it while driving!

[@atomicdmt8763]

@@titanlawnlandscape7783 yes - while driving......... idle for 2 min, accelerate to 55mph cruise at 55mph for 8-10 mins until operating temp......then 5-6 mins more. Then decelerate to 45mph w/out brakes...... stay at 45mph for 1 min. Perform 4 more deceleration cycles, w out brakes, of 25 secs each (speed not specific)...returning to 45mph for 15 secs in between cycles. Accelerate to 55mph and cruise for 2 mins. Stop - and idle for 2mins w the brake applied and transmission in drive (or clutch depressed).

[@atomicdmt8763]

I found the above scanner free RESET in several places online, fyi. Im trying it this weekend.

[@chrisace3086]

Funny how my 02 Tahoe 4x4 has the p0300 code showing on my device I have hookup to it for wifi and ECT for it and it shows this code but won't show on the dash...it runs fine no issues just has a code reading on something eles instead of the dash...

[@thekingsilverado9004]

It is possible the code is stored and needs to be erased. Another thing how that snuck up on me was an intake leak and most times it ran fine expect when really damp weather came in during the fall and then it really showed itself during the real real cold weather. So If I were you instead thinking the truck has gone Pelosi flakey redo the intake gasket and save yourself some real grief. My engine blew from the leak. I got hit by a vehicle on a back road less than 2 miles from my home with the intention of when I got first warm day I already had the intake gaskets but fate came and went I used the truck the very next day and the engine went sky high. Now I am back on here because I have the P0300 again but more than likely it's what this guy is saying the new engine sensor is not getting along with the computer. More than likely that truck he has has a new or used engine that was self installed and the old owner just couldn't figure it out.

[@SS-vp4eu]

Great info and thanks. Does a code not set when crank variation relearn is necessitated? Sounds like your buddy took you for an expensive ride,.as120 nearly pays for a diagnostic scanner that can perform crank variation relearns, but sometimes and especially when running a business as you are, reliability is priceless as ain't nobody be having no got dam time to be dining around with no false misfire crank correlation codes when putting down the highway at 2500 rpm. Especially when the flatbed costs more than the truck for this who aren't quite diyer but prefer to act as though. thanks for the vid!

[@matthewcarroll5278]

I'm going to try this. I love tue LS based engines

[@titanlawnlandscape7783]

They are solid!

[@Taylorrothman]

Did you have a rough idle when parked?

[@titanlawnlandscape7783]

I don't believe so.

[@romankxuawoloshyn1147]

So I got a Chevy Silverado 1500 and it's pretty much cranking but no start so I checked the fuel pressure I I replaced the crank sensor and I replaced the cam sensor as well now the fuel pressure is fine but the spark is really weak so I am thinking that maybe due to crank position so it's not reading properly when to ignite and deliver fuel but what you're telling me the symptoms that you had it kind of sounds like what I had and it did give me the code p0300 at one point but from now it's just cranking and no start and if I do get lucky to have it start it runs for only like 5 minutes and then shut off and it's running roughly and when I'm accelerating it's dying

[@marijuanvaldez]

I'm having the same problem with my 02 silverado 3500 8.1 literally danced around everything it could be but still p0300 while acceleration. Hoping this can be to a solution. Any advice or is this the dream answer I've been waiting for the last 3 months

[@titanlawnlandscape7783]

I'm going to defer to the experts on this!! Have you tried the relearn yet?

[@tommys2979]

8.1 isnt an LS based motor its a modern pain in the ass big block. Sell it and buy a 6 liter

[@jeffbowers4895]

Would it be better to replace the sensor please respond or does it have to do a reprogram

[@titanlawnlandscape7783]

Need to do a relearn.

[@TheFloridaBoy941]

Did your truck run a little rough once it started to warm up with the p0300 code?

[@titanlawnlandscape7783]

Sometimes yes.

[@dougsavery5442]

Im having the same exact issue on my 4.3 vortec. Done distributor, ignition coil, plugs, fuel pump, fuel filter. Didnt touch the spider injection because mi e is a 2004 with the MPFI not the crappy CPFI system so i belive there fine after doing a leakdown test it held pressure no problem. If this fixed my issue i will be extatic. Has anyone else had this issue on a 4.3 and fixed it

[@trevor2176]

I got a 1996 1500 4.3 and it's doing the same thing....

[@crazee6821]

This was a life saver ! Thank you !!!

[@titanlawnlandscape7783]

Did it work?

[@crazee6821]

I will let you know on Monday. I scheduled an appointment with Chevy ! Your information was a life saver. I changed every part on that truck and it was still misfiring . I even changed the transmission

[@larrytemen4789]

@@crazee6821 so? What’s the verdict?

[@h0ot3r]

@@crazee6821 it has been a few mondays. Did it work? Lol.

[@crazee6821]

I’m still chasing the misfire . We tried the relearn 6 times . There’s nothing else I can change . It’s been an expensive nightmare

[@juhDaddy09]

Any ideas on a P0308 code? Cyl 8 misfire - changed plugs, wires, and coils - didn't fix it.

[@hajrudinkavazovic2231]

Fuel injector #8 fail or clog issues maybe wire pig tail on injector #8

[@juhDaddy09]

@@hajrudinkavazovic2231 thanks for the reply. What do you mean wire pigtail? 🤔

[@brandonsmith5692]

My buddy's is doing this. Changed plugs,wires,coils, trans flush, a and b solenoid changed. He went out and bought the machine and it still keeps coming on. He is going crazy lol

[@titanlawnlandscape7783]

That's so annoying! Hes done the crank shaft relearn?

[@brandonsmith5692]

He has not. He is asking know wth to do as I told him it could be a dozen things know lol. I did just suggest he either does this relearn or try his o2 censors or fuel filter. But I am praying for him the relearn does something. Poor dude has spent alot of days and money trying to figure it out

[@titanlawnlandscape7783]

I would highly recommend he does the relearn. It's worth the $100 to do it. If it's doing what mine was it should fix it.

[@brandonsmith5692]

He did the relearn on his machine and nothing changed. He said even the shops are confused. I said well maybe the shops sucks haha. He is pretty much about to junk it with this misfire issue

[@brandonsmith5692]

Said it don't misfire at idle

[@Ruben901]

2002 chevy Tahoe, got a code p0300 after replacing knock sensors. I didn't replace the intake manifold gasket.....could that be the cause?

[@titanlawnlandscape7783]

I'm going to defer to a mechanic on that one.

[@tommys2979]

If the rubber parts on the intake gasket arent flattened out you can reuse them. Also felpro gaskets (green rubber) tend to hold up better over time than the oe (orange rubber) ones. And remember not to over tighten the intake manifold

[@delmyibrahim8143]

this happen to my 2005 tahoe as well after replacing knock sensors, did you fix it? what was the issue? i can't find the solution

[@Marathon13240]

I think that's what I'm going to do to mine, I have a 04 2500hd 2wd with the 6.0 lq4 like you. I tow my horse trailer with at least one quarter horse every week and it likes to misfire at around 4k (in tow/haul or wide open throttle other wise)for me but lately(really just today and yesterday after I replaced my fan clutch) it's been driving okay but I've only been around town doing maybe 60 at most for not very long. My truck has a little over 88.7k miles. I also rarely tow a 11 thousand pound camper with my 5th wheel, and I have to do it again in a week and I would rather have it corrected before I go up on my trip. And i agree too I've read a ton of forum posts with guys saying they pretty much changed every thing under the hood ignition wise and most of the sensors, replaced their fuel system components and still get stumped until they do the relearn and that fixes their problem. I guess it's worth a try too for me.

[@titanlawnlandscape7783]

Absolutely give it a shot! I replaced the wires and plugs and the sensor still was throwing at around 2500 rpms. Then found guys saying it just needed a crank shaft sensor relearn. That's all it was. Truck is a 2000 with 74,000 miles and runs like new. I'm switching my fleet of trucks over to check 6.0 Vortecs!

[@thekingsilverado9004]

That could be intake gaskets more common on the 99 to 06 trucks. It could also have been the running hot that did in the gaskets.

[@Bramon83]

There’s o2 sensors that AREN’T near the exhaust? Me thinks you meant muffler.

[@hanosaurus1]

Mine has a p0300 and it runs rough on and off while idling or on the road....so if its not due to rpm then what is it? The two o2 sensors up front? I also had it tuned up last year. And manifolds replaced.

[@roostercogburn7243]

Did you figure it out? I'm having the exact issue on my Yukon right now.

[@lukealsop6009]

Same here

[@YourBoyBrandon]

I have a 05 silverado 5.3l nd it sounds like the lifters are knocking but the p0300 code comes up.any suggestions somebody????

[@CrazyVloggerKids]

I have a Chevy 01 Silverado n it pushes itself (RpM) when I’m not even touching the gas pedal and I scanned and got 6 codes and there is a misfire I replaced my mass air flor sensor and spark... should I ask the shop to do what you did or change the TPS because it was a code

[@titanlawnlandscape7783]

Its worth a shot!

[@nelsontabor4679]

My 05 safari van has had p0300 code since I got it 9 years, 107,000 miles ago. Gave up trying to figure it out, just did crank relearn and have driven 180 miles and no light on, best it ever went before was 5 miles before light would come on

[@titanlawnlandscape7783]

Thats a good sign!

[@loudpelletier7028]

Because I have 3 other 6l and when I step on gas I can get lost in tire smoke and of them have 350 000km

[@loudpelletier7028]

Did you have a lack of power

[@Chrizy96]

I have a multiple random misfire p0300 I’ve replace most common problems But I still have a rough idle

[@lukehaak5907]

I have this on an 01 Tahoe does this at 50-60 mph think this will work?

[@titanlawnlandscape7783]

I would definitely give it a shot. It's a cheap fix of it works

[@lukehaak5907]

@@titanlawnlandscape7783 thanks

[@lifeofep3129]

Thanks

[@michaelhauser603]

Did you get a new sensor and if so did the new sensor need to be programmed? I am wondering if buying a new crank shaft sensor will need the learning process. I'm having similar problems.

[@titanlawnlandscape7783]

The sensor was actually fine. I just had the shop do a crankshaft relearn and it fixed the issue Haven't had an issue with it since the relearn.

[@michaelhauser603]

@@titanlawnlandscape7783 awesome! thanks for the quick response! I was at advanced Auto parts when you messaged back. I ended up getting a new sensor anyways. I'll try to resync the old one first.. just need to find someone with a good scan tool. Mine is cheap.. I just spent 4 grand on new exhaust headers, bolt extraction f I'm the header bolts breaking off in the block, y pipe with cats, o2 sensors, set of all new coils, and still same issues you describe. Omg if this works I'll have to send you a case of beer lol although idk if that's actually possible

[@michaelhauser603]

Thanks for the video. Awesome to share knowledge.

[@titanlawnlandscape7783]

@@michaelhauser603 Anytime! I thought it was something major until I researched it. Hopefully this video keeps guys from spending money they don't need to chasing the problem.

[@paquesepas6696]

@@michaelhauser603 Any update? I'm battling a p0300 and am looking in to a new crankshaft sensor but don't know if it will need to be relearned with a scanner.

[@doubleya215]

Hey man thanks for the video. Did your truck have a choppy idle or anything with the p0300?

[@titanlawnlandscape7783]

Anytime!! It idled just fine. Just ran poorly at higher speeds above 55. Would correct itself at lower speeds. The truck is still running great after a full season of towing.

[@thekingsilverado9004]

A choppy idle is more than likely the Idle Air Control or intake gaskets. IAC is located on the front of the throttle bodies. A real high or real low idle can also happen from the IAC. A bad cam and crank sensor will make it idle low and or also run with a lack of power and do exactly what he is describing. Your problem sounds diff. Also do not discount looking for that Vapor Canister Solenoid behind the cab on the frame ya gotta jack your bed up on the drivers side to get at that critter it's a bastard of a job.

[@thekingsilverado9004]

@@titanlawnlandscape7783 Let me ask did it have a little lack of power too?

[@yourresignation7087]

THEKING SILVERADO i have a 2000 5.3 and that’s happening with mine. First I only got p0137 bank 1/2 then I started getting p0300 it’s fine expect when I’m going up a hill (not even steep) it will lose power and buck, I have to press down the gas 10x as much as I should to make it up hill. All mechanics backed up til mid-August.

[@thekingsilverado9004]

@@yourresignation7087 My problem seems to be solved. It was cheap chinese made cline injectors. Had to run one to a dealership down the street. It said Delphi on it but where he cut it apart along with one my old Delphi injectors showed the truth. I still have a bit of a lack of power but that could be the K&N air filter is about 5 years old now only ever cleaned once that I can remember. So I am actually at this very minute in time on my way out the door to get one at A&A are the only folks around here that have mine in stock. Do yourself a favor watch the videos on how to clean injectors with sea foam and 9 volt battery. I had one plugged up in my Ford van cleaned it yesterday. We R getting an influx of dirty fuel here in the Northeast and it is affecting cars and trucks shops here are loaded with issues like we have

[@jonmills7752]

Did you ever hear a knock when it flashed. Mine runs great.But when I get high rpm it flashes an starts a knocking. Until I let off.If it's not flashing no sounf

[@titanlawnlandscape7783]

I never did hear a knock when the light came on it wouldn't shift down into overdrive once the engine light came on. Have you tried the crank shaft sensor relearn yet?

[@evansautomotive307]

Mine is doing the same thing! Did you ever figure out what it was? Starts pinging at like 3500rpm. Thanks!

[@thekingsilverado9004]

@@evansautomotive307 That is usually knock sensors and your check engine light should stay on when that goes on. Usually if the light is not on it's cam or crank sensor.

[@evansautomotive307]

@@thekingsilverado9004 Ended up being a plugged cat

[@thekingsilverado9004]

@@evansautomotive307 When my cat gets clogged I use Olive Oil shoot it down her throat and she runs really fast to the literbox only takes just a few minutes.

[@arfarms5711]

I’m with on the 6.0 compared to the Diesel engines. I got sick of spending thousands upon thousands on injectors and pumps

[@titanlawnlandscape7783]

I have cut my maintenance costs by 75 percent switching to gas motors. If you are concerned about your PNLs bottom line. Gas is the way to go.

[@arfarms5711]

Titan Lawn & Landscape totally agree

[@davejohnson3860]

@3:30 A road test is part of testing a vehicle for issues! I've never seen where a business charges you for driving and mimicking the problem! Weird to me, but decent vide

[@titanlawnlandscape7783]

Yeah! They said they drove it after the relearn to see if it was still acting up. We havent a single issue with the truck since the relearn.

[@davejohnson3860]

@@titanlawnlandscape7783 Understood...going to have my Indy do the same! Appreciate the vide!

[@titanlawnlandscape7783]

Good luck!! Hopefully it helps.

[@titanlawnlandscape7783]

@Richard McCormack That's to a T what mine was doing as well.

[@deanrowan9032]

This is over 2 years old as I see it today but beware the #@!&*^ knock sensors on the vortech!

[@joebuck4618]

Thanks for the info. you are correct.

[@titanlawnlandscape7783]

Thanks

[@alecpratt8165]

Relearn vs buying a new one? Sputtering with lean codes.

[@titanlawnlandscape7783]

I would try the relearn and see if that solves it.

[@alecpratt8165]

@@titanlawnlandscape7783 I'll have em do it when I take it in. Moms 09 malibu had same problem. No vaccum leaks, new intake manifold, plugs, wires and a coil. Only thing that gets me is the lean codes. P0171, P0174 and P0101. Cars can be a pain in the rear! I'm looking forward to the relearn haha

[@titanlawnlandscape7783]

Good luck!

[@nowgogetyashinebox2849]

Did you change the sensor before the relearn or just do a relearn ??

[@titanlawnlandscape7783]

I believe the shop just did the relearn.

[@la5speedvc928]

mine was a mass air flow sensor

[@gabealexander519]

THANKS!

[@titanlawnlandscape7783]

Anytime!!

[@gpt5002]

Mine does this at 71mph

[@benlit7007]

2003 chevy Silverado 1500 v6. Everytime im on the highway with a big hill going 60mph it goes on. Then i let off the has and it goes away a minute later. I just replaced the spark plugs and it does the same thing. So its bot the spark plugs for me at least. Has anyone been able to fix this?

[@tommys2979]

4.3s were pretty famous for intake manifold gasket failures. Check there

[@guitarguy3221]

I had that start happening on my 4.3 after towing a uhaul 6hrs then going uphill. 4 Years & a 5.3 swap later I am still getting that CEL flashing at me

[@woffordsoverlandjourneys8618]

Put a new crankshaft sensor in it

[@crazee6821]

Just letting everyone know that if you continue to drive your vehicle with a misfire then it will destroy your transmission if it’s an automatic. I learned the hard way ! Also will destroy your catalytic converters.

[@Clouderrr]

How will it destroy the transmission

[@larrytemen4789]

@@Clouderrr I’m also interested in how that is possible.

[@crazee6821]

@@Clouderrr it will cause the TCC lockup sensor to lock up the torque converter on chevys . If you don’t clear the code immediately you can’t drive above 55 mph and your torque converter will lock up . I’m on my 3rd transmission because of the po300 code

[@Clouderrr]

@@crazee6821 One if my daily’s is a chev Silverado with the 6.0 and I’ve had the p0300 code forever and have had no transmission issues yet. 270k km and counting

[@hippitymcstribbs4906]

Bad or dirty mass air flow sensor could cause it to buck like a bronco. Did mines but transmission survived. Didn't happen very often tho. 3800 v6

[@jagg5474]

I have an 05 Escalade and it’s only doing it at high RPMS

[@UpWheel.]

You ever figure it out? I’m in the same boat

[@jagg5474]

@@UpWheel. clogged catylac converter

[@michaelochoa9282]

Mine starts backfiring and stalling out after warm up. I need to try this

[@titanlawnlandscape7783]

Worth a try! It's a cheap way to try to fix it.

[@elg_uli9964]

You every get your problem fixed man? Mine just started a few days ago doing the same when it warms up.

[@michaelochoa9282]

Elg_Uli 99 nope. It’s just gotten worse and worse. I had multiple “mechanics” look at it and neither of them could figure it out either

[@thekingsilverado9004]

Might be the intake gaskets cause that as well as a cam or crank sensor. A tuner can find it and look at the codes stored in it.

[@michaelochoa9282]

THEKING SILVERADO well I changed both sensors. Research I did says it needs a relearn but mechanics that I’ve had look at the truck said it doesn’t. 3 different mechanics can’t figure out what’s wrong with the truck.

[@cassandrademery7669]

I have a chevy cavalier 2002 2 door my code is showing p0300 it's been pulling this code since 2018 no problems while driving but will it mess up my engine if I continue to drive it like this

[@titanlawnlandscape7783]

I'm unsure on that question.

[@drizler]

My 2000 has had this randomly but frequently since 2013 and 30k and runs like a clock . It always has. I did plugs twice wires once and it still does it. If it weren’t for The Peoples Republic of NewYorkistans dumb plug in ,inspection I would care less since the guy I get it inspected by winks and nods . Still , if it won’t stay off long enough to get it all reset and in for “ the Blessing” it becomes a big PITA. NY SUCKS.

[@Rama_248]

I have a Chevy Tahoe with a p0301 misFire I changed coil.. spark plug and wire also fell injector and still get the code and bad ideling

[@titanlawnlandscape7783]

Have you tried the crank shaft relearn?

[@buzztrucker]

Check compression in Cylinder 1.

[@gueroburban4989]

You need the new updated valve cover pcv 264-969 cover

[@thekingsilverado9004]

P0301 is usually an upstream 02 sensor. In other cases that turns out to be Intake Gaskets. The INNOVA scanners actually will not pick up an intake leak those scanners like I have may make U think all or one of the 02 sensors R bad like it did to me and I changed all of them even both the Vapor Canister solenoids. I had 2 problems myself rolled into one. After dropping a new motor in I also used cheap Chinese intake gaskets and had a leak which sent me to replacing everything. Then I come to find out after replacing cats 02 sensors and the emissions stuff that the computer needs a relearn. I am having the exact problem this guy is describing. I have a very subtle low curb idle and slight rough idle now when hot other than that it runs fine. It's just the computer is not tuned to the new cam and crank sensors.

[@Rama_248]

THEKING SILVERADO I had a mechanic look at it and said it could be a intake leak or something wrong with the cylinder 1 valve

[@garrettm.keiter9106]

Did it ever idle rough

[@titanlawnlandscape7783]

It did idle somewhat rough!

[@rlsafe8606]

👍🏽👍🏽👍🏽👍🏽

[@mariorrodriguez535]

too much talking

[@Blam-y5f]

Lots of misinformation here. Can't say much about the relearn yet, but the rest of that information... 🙄

[@matthewwalker1623]

120$ is not a lot lol

[@sim7409]

sensor relearn?? lol

[@titofuentez2340]

Injector

[@Sergeant5e]

Just tried this relearn (without any special tools) just did what a guy on YT did. Except he was just following instruction on his 50mil$ scanner, nothing special. I just did what he did and hope it works. We will see. 😭🤣🤣🤣😭🤣🤣😭

[@titanlawnlandscape7783]

Did it work?

[@Sergeant5e]

@@titanlawnlandscape7783 it ran fine on highway but can't say just yet but we now have a code for MAF sensor.

[@jessegroskreutz4240]

I have po 300 on my 2004 Chevy 3500 with the 6.0 gas engine Also has new plugs wires. Has knock sensor codes and E vap what should I do.its mis firing all over but not in on spot .

[@Sergeant5e]

@@jessegroskreutz4240 ok, so I would have never suspected this to be the problem because the truck would run; but it was the dis cap.

[@Sergeant5e]

@@titanlawnlandscape7783 it did work. Surprisingly🤣🤣😂

[@pureflakmonkey3368]

Mine is running poorly so I actually have an issue.

[@daveg9002]

I have a 02 chevy silverado 5.3 vortec with the p0300 code light on and I don't know what could it be I have had the spark plug wires and spark plugs replaced 6 months ago so I would doubt that's the issue any help would be greatly appreciated.