5.4L ENGINE MISFIRE CODES FIX AND ENGINE SHAKE FIX

This is a tip on anyone having issues with the 2004 - 2008 5.4L and 4.6L engine shake and cylinder misfire codes. Codes like P0303 Cylinder misfire detected. These are some things you can try before doing the plugs and coils. Flashing engine lights and misfires are common.

[@jacenas]

Thank you for the vid… I might as well give all three a shot. Otherwise I’ll go back to telling the wife that I have to drive for a few hours to test, when really I’m going to play golf

[@sglenn6]

This worked great. I removed my plug ins to the PCM, sprayed the pins with CRC Electrical Connector Cleaner and used my air compressor to dry them out and clean out any debris. These pins were very clean anyway. Then I went to Lowes and picked up the weather stripping and cleaned off the old gasket material on the air filter case. I also vaccumed out the area where the filter goes. It is running much better. Thanks so much!!

[@yourvideos5892]

did the same, now truck of one thousand codes runs correctly again, incredible

[@davidw5588]

My 99 started running a little rough . Then I was looking for a vacuum and moved the air box then cylinders 1, 2 ,3 ,4 codes came up misfire . I was at a loss ! I just saw your video and when this rain stops will certainly give them a try ! Thank you for your share !

[@Niko-iq8bc]

Did it work?

[@davidw5588]

@@Niko-iq8bc With all the property damage the this last storm did I haven't had time to try ! I should get to it in a day or so .

[@2vfidel]

Did it end up working for you David?

[@sblagg527]

@@2vfidel You'll never get an answer from this flake, who had absolutely ZERO point in posting.

[@kusjr4388]

For a f150 owner whom isnt a mechanic,5hanks for the ideas..i fo never hurt anything

[@lovinglife3134]

Just tried this on my 06 f150 and the sensor light disappeared... Feels much better.. 🙏🍻

[@geohiker9196]

Different year: 2002 F150 Triton 5.4l. I replaced A/C and all hell broke loose. I had p0352 (second cylinder electrical issue) and A/C compressor would not run. Changed spark plug, injector, ignitor coil with no luck on p0352. Finally, after two year delay, I re-inspected the electrical connectors on the firewall for possible damage. I found that two of the pins in the bolt together connector were pushed back and probably not making good contact. I also found that IF I had a p0352 code the A/C compressor would not run. Every time. When I fixed the connector, both p0352 disappeared AND the A/C compressor ran. I am not sure of the reason for this. This was a key find and allowed me to finally fix both issues by making sure the connector was in good condition. If your not successful at first or only have a temporary/intermittent fix, examine the connector even more closely to make sure that the pins are clean, the gasket is not preventing full engagement, and that your connections to the ignitor coil and fuel injector are securely engaged.

[@leviticusmatta5852]

Cleaned the plugs and now runs great with engine light off. Saved me big time 👌🏻

[@mikehickey41]

update, my truck is a 2006 5.4 3v, i cleaned the plugs on the pcm but i feel replacing the weather stripping on the air cleaner was the trick that worked. cheap to do thats what worked for me. great video thanks!

[@kaine_3863]

Was yours pretty bad? Mine is 06 as well. If I hammer on it, it won’t go over 50mph. But if I ease off it, and ease back into it, it’s fine. Sound similar? Thanks man!

[@jaimemoncivais552]

@@kaine_3863 my 07 does that, did you fix yours?

[@topcopwatch]

​@@kaine_3863 did you ever find a fix?

[@topcopwatch]

​@@jaimemoncivais552 did you ever find a fix?

[@Sorotech-pg8uv]

At beginning i did not too much credit in the video. I replaced the coil and nothing changed. Misfiring and shaking and then i unplugged the ecm and clean with contact cleaner. Holy boy. Car engine light disapear and it looks there’s a turbo on my truck it’s fast. I bought the superchager one month ago and now i know the difference. Thanks

[@johnnyellis4786]

Thanks bro. I have the same problem. Already did a timing job. It also affects my ac when it starts idling bad.

[@latynuacarstarphen9704]

I was told I need to replace both of my catalytic converters my ford 08 f150 is doing the same thing as ur on top of the smell of raw gas all day and it’s drinking so much gas. Check engine light on and it has a back misfire was cylinder 8 but all the plugs and coils have been change. Do you think the converters could be the issues

[@matthewtheis5382]

You might have a broken spark plug if your getting a fuel smell.

[@christianvaldez6119]

O2 sensors maybe

[@sglenn6]

I appreciate your video. I am trying this on my 2005 Expedition with the 5.4 V8 today. Thanks

[@ryanruz9397]

Wow thanks! I change out spark plugs, put sealant and weather stripping still had rough idol....cleaned and reseated the connectors and BAM! No more rough idle and cleared out check engine light. Thank you sir!! Now to fix leaky coolant problem 🙄

[@AnonymousXMR]

@@ryanruz9397 did you get your coolant issue fixed? I had to buy a new upper intake and have it replaced. The coolant was coming out due to a small crack by the thermostat housing.

[@GRIPOMV]

That vacuum line that you're referring to with does it going to it that is the I guess you would call it the exhaust or the relief for your vacuum actuated hub locks for your 4-wheel drive you need to unplug that if you ever decide to use your four-wheel drive

[@jessemurray2236]

So I bought a 2008 f150 with this problem ford said it was cam phaser problem we put in new phasers, timing chains, sensors and tensioners but had troubles timing the engine so we took into a local shop and they “fixed” it for $3,600 and the truck ran great for 3 months no problems I even took it off roading in some mud and worked prefect. Last weekend I took it out to our campsite and the truck stalled out. I drove it home with little to no problem and I took it out today for a 15 min drive to see what would happen and the check engine light came on and it the rev meter was trembling and misfires and it was shaking going 80kmh down the road and the knocking was pretty bad. We put in a code reader and it had the P0300 code. So next week or so we’re gonna replace the spark plugs and see what happens and try things to get it running so I can just sell it and be done with it.

[@jessemurray2236]

Update: we changed all 8 spark plugs and changed the fuel filter and it runs perfectly fine

[@StraightToThePointTutorials]

You change the fuel filter? they are external on these years.

[@jessemurray2236]

Straight To The Point yup it was right under driver seat

[@sr25jd]

Thanks , what I did was let the air pressure out of the fuel injector rail started the Lincoln Navigator and the problem went away .. So yes you’re right it could be anything..

[@mikejones-iu1yd]

Yes you are so right don't listen to the haters. I did these 3 things and the truck immediately started running correctly, check engine light off, the vacuum hose T's into the vacuum hose running horizontal directly above the one you have tape on. with a check valve between the 2. diagram on sticker attached to the plastic over the radiator. At least it is on my Expedition. thanks man!

[@EricStoeckel]

I have both cylinder 1 & 8 misfires along with the main code for misfires. Also have lean bank 1 code. Ideas?

[@canibis6034]

Appreciate all and any info to help me try to fix mine.

[@juansegura2003]

Great video I just rebuilt my 2005 f150 5.4 142,000 it's making the same issue p300 and shaking

[@jessemurray2236]

I have the same problem did you ever fix the problem?

[@luisa.gregorio1530]

I have the same problem and cant find the problem

[@kcuocsongwashingtonmy4073]

Thanks for your video ! I has same problem Bought the truck ! Start but when put on drive or back up it shake but when I drive around 20-30M/h it ok Press gas it shake again after that drive fine at 60-70 Light on need service soon Try to replace coil and spark plug later Thanks

[@SixFive8]

Tranny shudder. Google it. Try 2 pkgs of antishudder.

[@coleparker4003]

I just ripped that foam shit out of my intake a week ago and now I’m having misfires I need to know if this is actually the reason

[@CarlosRodriguez-xu4nj]

Check the pcv valve, it is located at the Valve cover, on the driver side if stuck open that’s the problem wen engine has multiple misfire and shaking at idler

[@chefkdowg]

Will try all three of these. Sounds valid.

[@bmw525]

Start this video at 2:30. This is when the video actually starts

[@mikehickey41]

mine is doing this intermittently, check engine light flashes and i dont get any codes. always at higher RPM,3k-4k 70-80 MPH. im going to try your tips thanks.

[@christopherbrungart8540]

Did you get it fixed

[@mick5740]

Where to reput the foam ? I forgot where it was. My truck did it today after a 2 hour drive in tye heat and a fresh oil change. Stopped at a stop sign jumped back on highway and stutter stutter check engine light flashes and then went away.

[@clutch5sp989]

Mine had a Huuuuuummmm noise at idle. Replaced the IAC valve and fix'd that. Still left with a slight misfire nudge as she idles. Whille attempt to unplug coil AND injector connectors searching the cylinder. Scanner w/live data isn't showing anything out of place other than a misfire overall in general not per cylinder test. The challenge is fun I guess.

[@tunyung]

IAC valve?

[@clutch5sp989]

@@tunyung Intake Air Control Valve. It's on the rear part of the intake. A bugger to get the bolts out.

[@Sickwiddit2820]

My uncles truck has this issue truck was running fine. But as he was leaving truck would shake we notice that one of the coils was loose and the bolt that holds it was broken off

[@Masontix]

Exactly what just happend to me last night

[@javierherrera007]

did ufix it i am having this issue​@@Masontix

[@michaelserna1442]

What is the hose just to the right of the PCM thicker diameter, ribbed, curved back into cab, connects to a stiff metal line/pipe. I seem to have a leak from there into cylinder 4 which is causing my truck to misfire.

[@StraightToThePointTutorials]

Heater core goes into the cab for heat. You're probably leaking coolant into the sparkplug well and shorting out the coils

[@Jabullz]

Coolant is probably leaking into the coil. You'll need to replace the boot, spring and plug and definitely get the leak fixed or it'll continue to happen. Easy way to check is after letting your engine cool down for a couple of hours pop the coil pack off and look down into your spark plug inlet. If there's any moisture, that's not good.

[@coleharland1441]

Just saved my butt on the side of the road

[@pragmatic.mortgage]

Straight To The Point did this resolve your engine shake and misfire ? i did this and for a couple days it seemed to get better but still minor engine shake. but low and behold i got the p0303 couple days later and rough on slight acceleration and low power. i replaced vct solenoids like everyone says to do as well.

[@teddavis942]

vcts in the end of the valve covers if these wacky ideas don't work lol

[@TenheadLife]

Just bought a 06 with a 5.4. Can i have a misfire but no Check Engine light? runs good but quite a good shake at idle

[@vdonn198377]

Me too following

[@Kirbygram2]

Same here need to know

[@tunyung]

Tell us more! Did you fix it? I got a 1997 same problem

[@TenheadLife]

@@tunyung I dumped some SeaFoam in the tank and cleared it up. Dirty injectors likely?

[@bdizzzzy]

Did it ever stall when coming to a stop?

[@MikeSmith-cn6ub]

500 on coils you should have a junkyard they are about 30 bucks

[@cdaviscd1132]

My 03 f150 is having the same problem

[@hunterlawson2610]

Thanks man air box cleaner truck worked!!!

[@ThomasWallace-k4w]

Could someone please tell me why all 4 coils stop getting power

[@coreygreen6937]

Then vacuum lines come from underneath are for the hub vents

[@chicodogechicodoge9999]

I don’t understand...so how did you fix yours??? 🤔

[@StraightToThePointTutorials]

There are like 4000 things that could make this happen. I said in the video this is after you tried plugs, vct solinoid, coils, etc these are just some hail marries to try as a last resort. There is no difinitive answer with a 5.4L

[@genesis204]

I’ve been trying to diagnose my 04 f150 rough idle n misfire for a year now, spent way too much throwing parts, gonna try pcm then I give up

[@emisaelarmienta1370]

What it was your problem in yout truck at the end?

[@teddavis942]

vcts

[@lindseywagner7510]

Try coolant sensor. You would be surprised.

[@tunyung]

@@teddavis942 vcts? What is it? Spell it out for us thanks

[@tunyung]

@@lindseywagner7510 coolant sensor can cause these issues?

[@KollynJ]

How is it running for you? You still avoiding the timing, I have done mine either

[@rromero1091]

my inlaws 2007 harley f150 5.4 started pulling. he found it that 3 cylinders are misfiring. he has never changed the spark plugs. never done a tune up. oil changes on time are questionable. they told him he has to rebuilt or swap the engine.

[@swaggerboy740]

Thank u so much this saved me I love u I’f there’s anything u need let me know u saved me 500

[@fuzzguzz2520]

what did you do??

[@Delfi1900]

I just replaced the cool! Sparkplugs! even the throttle body and it did run better ! But still have the misfire and rough idle when cold,,, it runs very nice once it's hot! But you can still feel the misfire and code on #4 cyl,, inevern eeset the PCM and nothing!! Next is replacing the temp sensor,,,

[@daniellofton5989]

FelixD cat did changing your temp sensor help?

[@teddavis942]

I believe the deals at both ends front of valve covers is the shake etc issues. called vct I believe.

[@glizzygoblin-nl2uh]

I usually throw as many mods into a car as i can to find the problem, maybe im misfiring because i need a cold air intake and exhaust

[@GAYKLINE]

Unplug both of your variable timming solenoids they are located on the front of your valve covers and see how it runs you can run the truck that way but if this is your problem your cam phasers probably need replaced

[@DoyleShadduck]

That’s not vacuum line you plugged there buddy, it’s your A/C system moisture drain. You better unplug that unless you want to replace your evaporator core because it’s been sitting in water.

[@Joystickoperator]

No it's a vacuum line to actuate the front hubs.

[@dustinmoore5849]

what about p1633 no vidoes on this 04-08

[@kaine_3863]

You plugged it and it went away... plugged it to what? You said it went to absolutely nothing.. I feel if you would demonstrate the video a little better then people would see. We came to KZbin to watch a video...

[@StraightToThePointTutorials]

Plugged it, not plugged in. As in capped it off. Like i said i don't know what it went to but ive seen them on alot of trucks. It might be a vaccum vent tube. Just something for people to try.

[@eagleeagle7802]

My 2007 Ford expedition is having the same problem it say in the diagnostic cylinder 7 misfired.im taking to the dealer because fews mechanic want to deals with it

[@StraightToThePointTutorials]

I tried that too. They had no idea... I finally just gave up and bought a new motor...

[@nicholasarrowsmith_gopro6500]

I have the same car it worked for me try this video trust me

[@nicholasarrowsmith_gopro6500]

I have same car do what he says it works

[@bradbaynham5368]

Be wild if my truck can fixed with your vid. Thanks

[@SixFive8]

Its actually felt along bottom and sides of air filter frame that holds AF and slides in. I used 3/8inch rubber car gasket sealer. Clean frame off good, cut gasket to size, remove the adhesive covering, snd attach to the plastic frame.

[@Andyjamz4u]

That could be a drain line for ac

[@jaimejimenez7173]

Where the connection line goes

[@Rayrayjr1970]

Vct solenoids and new high volumn melling oil pump and you'll never have this again ,not phazers its topend oil volume that ford fuked up on

[@Rayrayjr1970]

Male sure u get updated parts for these motors the solenoids have bigger inlets and the oil pump more volume

[@lindseywagner7510]

Yeah a lot of people have mentioned vct solenoid for these symptoms

[@Dr-YouTube]

I've done both solenoid and high volume pump and still have random missfires and shaking etc...

[@KollynJ]

@@lindseywagner7510 You seem really knowledgeable about these trucks.. can I borrow your number to ask you a question about mine?

[@dwnrh85]

My truck does this after a rain and the air is very moist

[@jaimemoncivais552]

Weather stripping under the windshield

[@Jabullz]

I'd check your fuel tank pressure. Sounds like that might be a leak and pulling atmosphere from outside. That system should be under a vacuum.

[@dwnrh85]

I'll check each of these... The fuel pressure one I may need to do research on, that's for sure

[@rolandgonzales6948]

2005 Ford f150 idling but no power

[@baltamex5727]

It’s probably the phasers

[@stevenculbertsonjr6616]

My truck dose the same an idle low then high an now has a odor like bad gas or something but mine is a 02 f150 4.2L having trouble finding much out about it an my engine light is on an when I got it checked all codes came up engine disabled an all that not shore where to start

[@rolandgonzales6948]

If anybody has any good pointers let me know thank you

[@yarissamata4873]

Great video i have a 2005 f250 5.4 3v same ... and shaking a stalling when i stop. Where is the line conected to

[@raymondsalinassanchez9639]

Did you fix yours? I have same truck and problem

[@lapdoglapdog4711]

If you dont know you havnt done a good job. Waisting people's time if you just dont know

[@shrapnelslurpee]

Every time my truck has a miss the dealer just change's my plugs and tells me its fine its starting to piss me off.

[@Big_Ben1988]

Mine dont throw codes for like anything. Kind of annoying.

[@jaimemoncivais552]

Same on mine

[@kusjr4388]

My dad (boomer,70yrs)said just buy new plugs and wires....not so gast papa

[@brandenlamoureux7751]

Mines got no engine lights on just 305k on her but shakes still ffs lol

[@kennethhudson8013]

Damn you can get whole set of coils for $200 in the States

[@Big_Ben1988]

On Amazon they got 8 coils and 8 plugs for like 75 bucks.

[@barryjohns1965]

You can order a whole set of coils here in the states for 40.00. They come from China but so do the oem ones that are called Motorcraft. Anyway. I paid 35.00 plus tax. Less than 40.00 for all eight coil packs and they been working great so far.

[@kalebmatthews8336]

This is why I’m trashing my 2008 Ford -150 Triton STX, it is a pile of junk, I’ve replaced so much in it and it still runs like shit and dies at stop signs and red lights.

[@DrdjFox-hu1mc]

Thanx

[@jamesalexander138]

Imma try this

[@usadaytrader]

Anybody fix this problem?

[@-MrRichBiker1967]

oh my......you have to get to the point, your viewers Will FALL asleep, before you get into the REAL PROBLEM, THANK YOU.

[@jessewhigham491]

Dude if you get bored in 6 minutes you got bigger problems than your truck being tore up

[@MikeSmith-cn6ub]

That motor with the 3V on it is junk

[@swaggerboy740]

Just get to the point heat

[@precisiont5188]

The Ford dealerships are incompetent and even deceitful. After having so many bad experiences with multiple locations I decided to start doing my own maintenance and to never purchase a Ford again.

[@Jabullz]

Every truck is going to fail on you at some point. Stop doing that thing making everything chevy vs ford ffs. I've got both and they have both F'd me plenty of times.

[@J05hFontenot]

​​@@JabullzI hate over engineered crap like the 3v Triton. I had a 2000 Silverado that never let me down until a rock busted the transmission. 380k miles. This 04 f150 is bleeding me of my time and money. It's spent more time sitting in the few years I've owned it than I've driven it. 170k miles. The engine is a horrible design, it's electric system is chaotic. My dash lights quit working, then the obd Port, then the 4x4, now the bad misfire. I've done timing chain, phasers, lifters, rollers, cams, oil pump... It's just a piece of shit 🤷 I'll take an obs over anything 2000s and up.

[@regigilman2255]

Waisting my time Fruit fly setting eggs

[@guerreroazteka8089]

Talk to much man!!

[@hgallegos915]

Thats good! I like it!

[@MrArt156]

Too. Not to

[@hermosisisimo]

🤔

[@williampence4528]

My 2003 f 150 my truck shakes only when I turn it on for like 10 secs and once it gose abit it's gone and I think my guy said he did injectors and stuff and park plugs so far grrr

[@JuanMoreno2876]

Too much bla bla bla. I'm gonna try this anyway.

[@michaelreardon7667]

Get to the point

[@leviticusmatta5852]

Cleaned the plugs and now runs great with engine light off. Saved me big time 👌🏻