Toyota Corolla Cylinder misfire, p0301 p0302 p0303 p0304 igntion coil balnce test and replace

[@stockstradr]

Fantastic video - sending my thanks to RB the Mechanic! It is so helpful to have DIY videos posted by experienced car mechanic like RB because the repair advice is so helpful and accurate. I used this video to diagnose and fix my cylinder-misfiring 2009 Corolla in about 1 hr for the cost of a $100 replacement ignition coil. A Toyota dealership probably would have charged me $800 for that same repair job.

[@RBTheMechanic]

Good job!! Glad u found my video

[@luiswong546]

I want to thank you because everything you said happened to me and I managed to solve it myself! I went to the parts store and asked to scan it with the machine and saw the error. After that I bought an engine coil and did the test. only one was damaged. I was driving before and saw that I was taking a long time to shift gears and shaking a lot. Now everything is resolved. Thank you very much once again!

[@RBTheMechanic]

Nice great job!!

[@robbbarnett4978]

Excellent and very explicit from the getgo, thank you! Only video I came across that actually told what order cylinders were in.

[@RBTheMechanic]

Yup always here to help!!! And save money!!

[@kfin2287]

Amazing brother, this what was wrong with my car. I feel so accomplished after doing this. Car is running smooth as a babys bottom again! 😊

[@RBTheMechanic]

Nice good job!!!

[@maximomartinez8596]

Thank you for the info. Is real helpful good video real good explained

[@RBTheMechanic]

Yeah thank u bro will help lot of people out !!

[@Eli_is_a_Lauver]

My friend nice video

[@amandamiller6914]

Thank you ❤

[@RBTheMechanic]

You're welcome 😊

[@TheBadioo]

22 manual Corolla hatchback… I had a random misfire code (P0304) one day after reaching 30k miles. But I also noticed that sometimes the power drops randomly when revving hard/ accelerating quick. I have an after market midpipe and quads… you think a tune might get rid of this problem? I mean the car is so new I should need any new coils

[@RBTheMechanic]

Oh ok I can’t say it would get rid of the issue but that is the only starting point check for oil leak inside spark plug bore and on coils before replacing anything

[@ramishshirzad-cz1sr]

Good job brother thank you thank you for

[@RBTheMechanic]

No worries

[@aldomunoz6862]

Your the best

[@RBTheMechanic]

Thank you

[@GrungiestTrack8]

thank you!

[@RBTheMechanic]

You're welcome!

[@willmidgette9079]

Whats the best ignition coil for a 2010 toyota corolla le

[@RBTheMechanic]

Denso

[@willmidgette9079]

@RBTheMechanic ok thanks. I got a misfire on cylinder 2

[@nypdbob]

Thank you

[@RBTheMechanic]

You're welcome

[@nypdbob]

Information and instruction was outstanding changed it with no problem whatsoever thank you very much

[@nypdbob]

Your help was great and changing my ignition coil I appreciate it very much worked out perfect

[@tyreedockery8355]

This helps man!!!

[@defbear]

I started my 2013 Corolla yesterday morning. It idle'd rough for 10 seconds. I revved it a little. It idle'd normal. This morning I checked the codes. PO303. I cleared the code. Started it. It ran normal. Do coil's that are going bad do this? Meaning, they can cause a rough idle. But then act normal. So, they are "going bad". But aren't "bad" just yet?

[@RBTheMechanic]

I would replace the coil and spark plugs

[@defbear]

@@RBTheMechanic What brand spark plugs do you recommend?

[@RBTheMechanic]

@@defbear denso iridium

[@Jalenrs]

Please answer but are they in this same order on the 2014 Toyota Corolla ??

[@RBTheMechanic]

Same

[@Jalenrs]

@@RBTheMechanic so bro I went to recheck and it said I have all 4 codes misfire now plus a po300 random misfire code and po351-354 primary secondary ignition coil circuit codes what could be causing this ?

[@Mattbeee]

My 2014 Toyota Corolla was reading a cylinder 1 misfire for a while, changed spark plugs, coil packs, fuel injectors still read it. But it now says cylinder 2 misfire. Ever seen that before?

[@RBTheMechanic]

No ur saying u didn’t fix cylinder one and it switched to diffrent cylinder?

[@Mattbeee]

I bought a new pack of fuel injectors as the last thing that I thought would fix the issue but it didn't and then it's started reading cylinder 2 misfire now

[@EAflies]

My coils keep going bad, ignition coil in cylinder 4 had to be replaced twice about 2-4 months ago and now cylinder 3 is having a misfire. Is it possible that something is overloading my coils, like high resistance in the wires or a bad ecu ?

[@RBTheMechanic]

Depends on what brand coil u use I had similar issue with one car years back. And it was due to bad spark plugs so change plugs also if u have could be possibility

[@shadowopsairman1583]

Replace all coils and plugs

[@evergreenakwasiasare9022]

The ECU might be faulty so it's going to burn the coils day in day out

[@RodrigoG-l7s]

I have a 2002 Toyota Corolla s is the order 1 2 3 4? I have a misfire code on cylinder 2

[@RBTheMechanic]

Yup same order

[@Jalenrs]

Yo bro I just left car on and disconnected all 4 coils one by one and they all pretty much made the car idle different so that might be a spark plug ? I just put new sparks and the car already has a slide weird shake and idle rn that’s why I’m checking the spark plugs I had a code for spark 3 I changed all 4 sparks and bought coils from junk all 4 couldn’t afford new I went back to check engine light again after changing all that (and it did make my car drive better at the time cause it was kinda shaking then like it just started now) but when I went back to check light it said cylinder 4 bad now and 3 still and I just tested them do you think it’s the coils still or the sparks ? I have the original four that was in there when it only said cylinder 3 so I should have 3 good coils should I try just swaping the 3 cylinder and 4 and see if that make it better ?

[@RBTheMechanic]

Do u have code for misfire? Shake at idle could be low rpm clean the throttle or bad engine mounts

[@TimeLapseCarGuyBruno]

What if you're getting all four codes p0301 302-303-304.. but the engine seems to be running fine

[@RBTheMechanic]

Possability vaccum leak

[@TimeLapseCarGuyBruno]

@@RBTheMechanic I'll try to smoke it out tomorrow. Thnx

[@RBTheMechanic]

@@TimeLapseCarGuyBruno update me clean out maf sensor and upstream oxygen sensor as well and reset the light. Also by any chance did u low on fuel I ask cuz I had cuz that had low fuel it misfired with low pressure and customer filled up but once’s codes r set they r there

[@TimeLapseCarGuyBruno]

@@RBTheMechanic I replaced both O2 sensors with denso parts.. also cat is new .. not low on fuel.. reset CEL... Drove 30 miles.. scanned and got p0300 and p2097.. 2008 Suzuki sx4. I'm thinking could be vacuum leak.. I checked the plugs and they look ok.. but I'll check them again and also the coil packs and injectors..

[@RBTheMechanic]

@@TimeLapseCarGuyBruno oh it’s Suzuki. Umm check ur oil also timing can skip

[@hecksloke9435]

Bro. I love you. Lol. Fr tho. My respects brother

[@RBTheMechanic]

Thank you bro!!!

[@Carne2000]

I changed my spark plugs and my first cylinder ignition coil. The check engine light went away for a few days and then came back for the same cylinder. Any ideas at what that could be?

[@RBTheMechanic]

Was there any oil in the bore or on the spark plug the old plug?

[@Carne2000]

@@RBTheMechanic nope. None

[@RBTheMechanic]

@@Carne2000 ok so try to check injector or swap it. Other wise check engine compresson

[@personjo100]

I bought a cheap ignition coil that only made it a few weeks. Bought higher priced made in Japan part and it’s still working 2 years later

[@Carne2000]

@@personjo100 it's exactly what I ended up doing

[@Josegarcia-jb7bn]

Can a multiple misfire on all cylinders can be trow the code P0300 P0301-02-03-04 because my timing belt it’s going bad on the car?? I replace the spark plugs and coil with denso brand and still having the same codes I replaced the gasket on the intake manifold and still the same problem need help please TIA

[@RBTheMechanic]

That could be lot of things what year make model is ur car. Also check ur oil and vvit

[@Josegarcia-jb7bn]

@@RBTheMechanic 03 Toyota Corolla 1.8L someone told me that may be the timing

[@RBTheMechanic]

@@Josegarcia-jb7bn well make sure that is good also the vvit control the timing also oil matter cuz vvit controls it so check both I would see if there’s any oil in the coils and spark plugs as well

[@tommyd6665]

I have a 2011 Corolla s with 325k miles. Got a P0302. Did the coil plug switch, got same code. I disconnected every coil and every time felt like car was gonna turn off. I changed the spark plugs and after couple miles I got the same code … what could I check on the car next?? Every shop are closed on Sunday’s … :(

[@RBTheMechanic]

Chnage the coil on that cylinder #2 and then reset the light and u can see misfire data with scan tool to see if it’s really misfiring

[@sergiojr7173]

Get a new car

[@Eli_is_a_Lauver]

On my car just came 2 codes = P219A and p0301. My car never change the spark plugs cince I buy it. You think cut by the Coil or spark??? Thanks bro God bless you💪💪💪

[@RBTheMechanic]

Swap the coils to see if misfire changes cylinder other wise change plugs and coil if needed

[@Eli_is_a_Lauver]

@@RBTheMechanic ok will do it. THANK you God bless your business n you👍🌟💪

[@RBTheMechanic]

@@Eli_is_a_Lauver thank u!!

[@fernandob3062]

Hi there !! I have de same problem friend ..i already replaces coils and spark plugs ....all new and denso.....after 6 days same problem come....what to do next. Any advice ...???

[@RBTheMechanic]

What brand coil did u put?

[@fernandob3062]

@@RBTheMechanic All denso spark.p and coils OEM, all new!!

[@RBTheMechanic]

@@fernandob3062 oh ok well not sure maybe the coil. Failed

[@Bruce-mh8mo]

what if i get a P0300, and a P0301, P0302, P0303, P0304 but my engine runs fine? is that just a vacuum leak in the intake somehow? almost like a bad/dirty FITV? on a 2001 Toyota celica btw

[@RBTheMechanic]

That’s random misfire it could be due to vaccum leak or the vvti solenoid not working propperly on start up

[@Bruce-mh8mo]

@@RBTheMechanic could it be my IAC Valve? I think it could be dirty and stuck open because my celica idles high around 2500rpms when first warming up.. especially if it’s stuck open, could that be causing the vacuum leak? and high idle?

[@RBTheMechanic]

@@Bruce-mh8mo yup it could be that if u got electrical throttle body then clean the throttle plate

[@5162-b8y]

Help please 2008 Corolla Po301 New OEM parts, new denso coil, new timing chain tensioner, new intake gasket, new injector, new mass flow sensor, compression 136 for all cylinders. What is it.

[@RBTheMechanic]

U didn’t say spark plug !

[@5162-b8y]

@@RBTheMechanic also new spark plugs OEM and new oxygen sensor, new valve cover gasket as well. Please help 🥺

[@RBTheMechanic]

@@5162-b8y somthing has to be bad try swapping coils and plugs from that cylinder. How about injector?

[@5162-b8y]

@@RBTheMechanic I already swap them out, also new injectors. I want my Corolla to run 😭 🍼

[@RBTheMechanic]

@@5162-b8y ok so u did all that now time to check injector Pauls check igntion coil Pauls

[@ray76nc]

Can a bad ignition coil cause my toyota to go into limp mode?

[@RBTheMechanic]

No limp mode but misfire only

[@hecksloke9435]

What is limp mode if i may ask?

[@ray76nc]

@@hecksloke9435 It's when the car starts running sluggish and only goes about 15miles an hr it's a safety feature to prevent further damage to the engine...

[@samham4461]

At 3:15 what is the problem here?

[@RBTheMechanic]

Huh?

[@samham4461]

@@RBTheMechanic if the shaking gets worse is that the problem? Also if it's shaking is that good?

[@RBTheMechanic]

@@samham4461 it’s bad regardless repair it