Ford F-150 (2004-2008) :: Miss At Idle - Got Codes P0351 / 356?
Feb 4, 2012
I bought a 04 FX-4 a couple months ago with 102k on it. Brought it back to selling dealer, they replaced #1/#6 coils, its ran great till this past week. Again it has stumbled a couple times this week. It only seems to have the miss at idle (comes and goes) take off from light, within 50 feet its running like a champ again. I cleared the codes (disconnect battery)and now it seems my idle is not steady, it fluctuates. Is the idle a product of the codes?
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2004 F150 5.4 3v. I bought the truck with 102k on it, it now has 124k. In the morning, when the outside temp is between 30-50, the engine starts and runs fine. When I get to the first red light ( about 1 mile away) within seconds of the engine at idle, engine starts to run rough and CEL. Every time the code is p0351. If I let it sit in the driveway to full warm up... no problem. If I start the truck, shut it off and restart...no problem. It only happens at the cooler temps. I have changed plugs, used motorcraft, nickel antiseize, torqued, etc. Ford changed the coil, I have changed the coil, cleaned MAF. As soon as I cross the intersection, light stays on, rough running clears up, and runs like a champ for the rest of the day.
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Apparently yesterday (no known reason) my sons truck started to develop a miss (so it feels like to me).
2005 f150 5.4 auto 215000km 4x4 stx. No specific cylinder codes. All general codes.
P1000
P1464
P1550
P1703
P1780
None of which I can see causing the miss. No check engine lite, no other codes. Not sure what to look at next. I am starting to disconnect the coil packs one at a time and see if I can pin down the cylinder.
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2005 f150 5.4.
I have a slightly rough idle and can feel a miss at 1600 to 2000 RPM. Sometimes running about 65 MPH up a slight grade I can slowly press the gas pedal and the engine will begin to miss much worse, causing the truck to shake pretty bad. When it gets this bad it will slowly flash the CEL and I get a P0306 code (Cyl 6 missfire).
The truck has 148000 Miles on it and the plugs were replaced at approx 120000 by the dealer.
In the last week I have replaced the plug in cylinder 6 (looked ok) and have replaced all the COP's along with the fuel filter and the injector on #6.
I haven't been able to get it flash the CEL light or throw a code since replacing the COPs though and I am at a loss at to what to try next.
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I posted a while back about my 04 5.4 having an issue at idle. I did all the normal things like replace coil, spark plug, etc etc. No change to the issue. It still acts as though it's misfiring on a cylinder and I get codes P0306 and P0316. Finally took it to ford and had a diagnostic check ran. Everything on the top end was in working order. The tech even put a known working coil on 6 and nothing changed. I was told that it's either an intake or valve issue on that cylinder. But no definite answer to problem.
Fast forward to yesterday. I got a wild hair at lunch and went out and started truck. Pulled injector plug off of 6. No change to the way it was running. I did the same for 5, 7, 8, 1, and 2. All of which made a big difference in the way it ran. It was obviously misfiring with no fuel to cylinder. This gave me the idea to swap 5 and 6 when I got home to see if the issue followed the injector from 6. I did NOT. I pulled the plug on 5 and got the obvious change in the way it ran. So there is definitely something going on at cylinder 6 that I cannot figure out.
PCM, bad intake, bad valve? I'm not rich so a trip to ford for repair is gonna have to wait. Truck seems to run fine when driving except for slight hesitation during acceleration.
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2004 f150 5.4
When I start the truck it runs fine for roughly ten seconds then it shuts off power to two of my injectors. Or so I thought. With a noid light on, I was getting shutdown on cylinders 1 and 6 as per the codes ten seconds after starting. I assumed this was as intended to stop raw fuel from entering the cats.
So far this is my findings. Noid light-shuts off the two cylinders after ten seconds. But will pulse again later before shutting them down again. Truck idles better, but never seems quite perfect. Could just be how 5.4's are though.
Swapping injectors did not change codes.
Coil packs are working on those cylinders. Spark test checked out and plugs are firing. They were replaced at some point with oem motorcraft plugs.
ohm test showed wiring to those cylinders was fine. Wiggle test showed the same.
The truck revs and sounds great before it shuts off power to the cylinders. I cannot assume a mechanical failure at this point. I have not ran a compression test on it yet as, in their great wisdom, Ford determined they had to be different than the rest of the planet with spark plug sizing. Adapter will be here tomorrow for me to verify that part.
I have checked around quite a bit so maybe this has been somewhere else on the site and I missed it. I have exhausted everything minus a compression test. I can only point a finger at the computer currently. But I am not quite sure how to verify that is the issue. And quite frankly, I have never seen a computer go bad without outside interference.
On a sidnote, the truck starts very hard at times. Like a car that has heavily advanced timing. It could actually just be a starter issue though. I figured I would get to that after I find out what the other issue is.
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2003 passat wagon 2.8l v6 with p0421 and p0431...a slight miss as well...
Cold start up is fine and initial driving. After car warms, there is a slight shutter at idle (just occasionally) and upon acceleration with low rpms. (It really feels like a miss) Went to AutoZone and came back with the codes above. I thought it might need a new coil but now I am not really sure. I want my performance back but seriously doubt cats are bad at the same time.
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I just received a 06 F150xl with a 5.4 triton and idles rough with the following codes! p0357 p0012 p0340 p0344 p0351 p0352 p0356 p0358 p0357 p0102 p0113 p0353 p0354 p0355 It's amazing the truck even runs and with no light on but it will accelerate. someone mentioned to clear the codes and drive it 50miles or so and read them again.
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For the techs in here, I have a data logger (AutoTap) and the symptoms are low idle and sometimes it runs rough idling and driving. It had me thinking the fuel pump was going out. That is not the case. I did get into part swapping mode so I have new plugs and coils and new VCTs all in the last 24 hours. The engine has 85K miles on it (rebuilt ford long block), truck had 150K. I'm not sure what parts were replaced when the longblock was replaced but I'm guessing the 02's are original.
Data that looks odd to me in the Autotap real time data logging is this:
- STFT Bank 2, goes from 10-15% and climbs till its over 300% and then the truck goes into Open Loop due to an error (per the Autotap) but it never says what error and the CEL never lights. Idle goes up when its in open loop and then after a minute or two it will drop back into closed loop.
- Fuel pressure never drops below 37
- Idle will drop to 250rpm
- Engine load at idle is 25%?! With AC on and idling (at 550rpm) engine load is 42%? Seems high no?
Nothing else other than the STFT Bank 2 and the high engine load seems out of miss. No misfires, codes, etc. What else should I look at?
Other background/patient history:
- Alternator #3 was installed 2 weeks, It replaced alternator #2 that went in 4 months ago to replace the original alternator (144K miles). Both died and caused low voltage/battery dying symptoms and verified by volt meter.
- FPDM was replaced proactively 8 months ago just because I don't want it to break down when I'm towing my race car.
- I have not tried cleaning MAF, EGR?, IAC, nor have I replaced O2s. The only thing that leads me to believe MAF might need cleaning is the load?
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My 2004 f150 has always been great to me. all the way till now at 255k miles. My truck is misfiring really bad. Here are the codes I have :
P0506 low idle (because of the misfire)
P0356 ignition coil F (6) primary/ secondary circuit
P0308 Cylinder 8 misfire
P0174 system too lean (Bank 2, right side of engine)
p0316 misfire detected on startup
This problem happened 2 days ago. I reset the codes and they all come back together in 10 minutes. the misfire is very bad. I wonder why coil 6 has a fault code but number 8 has the misfire code.
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I tugged on the little hose on the back pass. side of the engine,(5.4),...
and I could hear the vacuum leak that is apparently causing the erratic idle, and PO171 & PO174 to come up.
I know this hose is hooked to the Charge motion Control Valve on the back of the manifold,..I can't imagine what it does, as it terminates with some kind of plug or check valve??? Haynes say's to remove the entire manifold to get to the CMCV.
I can see it with a mirror,. I am thinking maybe long needle nose from Harbor freight,...bend the tip short,..maybe be able to change it out?????
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5.4 3v. my last few weeks have not made me a fan. Here are the details:
I bought a 2008 F150 XL 5.4 3v with a cam phaser knock. Have done other timing jobs in past with no trouble so I was not too afraid to tackle this one. famous last words...opened the motor (shout out to the passenger side valve cover and its designer here) and found semi damaged roller follower on driver side. Worn cam lobe on the corresponding lobe and a loose chain on passenger side. proceeded to :
Change all timing components: phasers, chains, tensioners crank sprocket, all applicable bolts and BOTH cams as well as all lash adjusters and roller followers. most looked fine in fact all really did with a bit of wear on a few roller followers but only one bad one. engine didn't look to bad pretty clean.
Double and triple checked my timing chains and it was spot on. dark link on spot on crank, two dark links on the L and R dead on. put it back together. oh yes, changed all plugs with motorcraft ones, didn't even break one. did not change vct solenoids because I falsely assumed I could change the later easily if needed. they looked ok. screens intact etc... silly me for not realizing how kind Ford was in 2007 and later to necessitate removal of valve cover. I was reading a previous one on the how tos and assumed later models would be the same since it was the same sensor...
Cranked truck ran great. I mean perfect. sounded perfect. ran like a scalded cat. till it got to hot idle then it started doing its thing. rattle shake till you revved it. ran fine just wouldn't hot idle fine especially in reverse or under slight load. replaced driver side vct since ford only had one and I started on the easy side ordered the other one waiting for it. seemed to improve dramatically meanwhile I am driving this truck to test it. I drove it to work 50 miles each way and it ran great.
After a few trips it popped the P0420 light, seemed to run ok, cleared it watched it wouldn't come back. O2 sensor did seem to imply a bad cat on bank 1 since it seemed sensor two was mimicking sensor one and not staying stead like the other bank. still ran fine,
So I decided to check back pressure on the cat. I pulled sensor one out of bank one (really a joyously tight squeeze in there) hooked up my gauge and got 0 back pressure. revved it and all nothing. hooked sensor back up pulled truck out of shop and it commenced to running like crap. I mean bad. running worse than before I got it. Popping P0012 code continuously, and tons of misfire codes associated with bank 1 ..cyl 3 etc.. I tried swapping coils, pulled coils and checked spark with a tester and firing away looks like tons of good spark.
Now the weird part is : looks like bank one is dead. I can unhook any coil pack and/or injector and it runs the same and sounds like it is missing. if I unhook one off of bank 2 it almost dies or does. so bank 2 seems to be running fine. it will start and run but sounds like it missing sets flashing check engine light and backfires and stalls like crazy. I even second guessed my pressure gauge and unhooked exhaust manifold from pipe and it sounds even prettier when it backfires out of there but no change. I pulled cam sensors and cleaned it again and even tried swapping them since they looked identical but no change so I put them back.
Now I can only surmise that I am out of time somehow? or I have a gremlin perhaps? I like working on cars (usually) but this one is getting old. how do I verify what is wrong. if it is timing related how do I verify that now definitively once my marks moved I really cant figure out how to tell if it is in time? Since it has all new parts and they all ran beautifully till now. could it possibly be the vct solenoid doing all this? I plan on changing it when it comes in but surely it cant cause this many problems.. I unhooked it no change, and it does it at a cold idle and any rpm. really runs worse at idle but bad at any rpm.
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I recently purchased a Ford pickup. I bought a 2004 F-150 with the 5.4L 3V engine. I have only driven it for about 300 miles so far and am having problems. The engine has 200,000 miles on it. I have read several posts on here about the cam phasers which I believe that I may have some issues with. The engine will run good when cold, on the road, etc. The engine does have a slight ticking after it warms up (cam phasers?). When I come to a stop after the engine is operating temperature, the engine will start to miss and shudder and all 4 above codes come active and are also pending (8 codes in total).
All 4 codes are logged at the same time. I have replaced both cam position sensors, both sensor ends and terminals for cam position sensors, checked wiring around rear of engine (does not appear to be rubbed through), all plugs were replaced, and all COP boots are good. Is there anything that can cause these codes that may not be the actual cam position sensors, ie. VTC, COPs, cam phasers? What pins the cam position sensors come to on the ECU (so I can ohm the entire wire harness)?
Also, if the engine is missing with the codes active and I rev the engine up it will come back to idle and run great. The engine never dies out, just runs horribly. I have also unplugged each sensor with the engine running which has no effect on the way it runs.
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I recently purchased my first Ford pickup. I bought a 2006 F-150 with the 5.4L 3V engine. I have only driven it for about 300 miles so far and am having problems. The engine has 146,000 miles on it. I have read several posts on here about the cam phasers which I believe that I may have some issues with. The engine will run well when cold, on the road, etc. The engine does have a slight ticking after it warms up (cam phasers?). When I come to a stop after the engine is operating temperature, the engine will start to miss and shudder and all 4 above codes come active and are also pending (8 codes in total).
All 4 codes are logged at the same time. I have replaced both cam position sensors, both sensor ends and terminals for cam position sensors, checked wiring around the rear of engine (does not appear to be rubbed through), all plugs were replaced, and all COP boots are good. Is there anything that can cause these codes that may not be the actual cam position sensors, ie. VTC, COPs, cam phasers? What pins the cam position sensors come on the ECU (so I can ohm the entire wire harness)?
Also, if the engine is missing with the codes active and I rev the engine up it will come back to idle and run great. The engine never dies out, just runs horribly. I have also unplugged each sensor with the engine running which has no effect on the way it runs.
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My truck starts to miss between forty and fifty mph. When you get on the gas pedal it won't do it but when you are slowly increasing speed it will start missing or maybe you can describe it as bucking. Above fifty and below the truck runs fine.
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I have a 2004 150 with 165,000 miles I sometimes pull a 5 by 8 trailer. when pulling trailer in overdrive and excelorating the engone will cough several times. I took it to a mechanic and he told me that there was nothing he could do that I needed a new engine. I can pull trailer out of overdrive with no problem. don't undrstand why I need new engine....
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My sons 04 f150 started to miss then quit on him then wouldn't start so he had a buddy pull it to a neighbors I went to check it out an hr later the first time i tried to start it it started ran for 2 sec then quit tried again and it would just crank no start went back 3 hrs later with my code reader no codes but he did say check eng was on when it quit first time so i try starting started up so i headed for home, it started running rough twice on way home but seem to come out of it both times.
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I have a 2004 f150 with 135000 miles. Bought it a few months ago. I notice after the truck is up to operating temperature it seems to have a slight miss, you can kind of feel it when sitting in the truck. Cant really hear it. Outside the truck I am hearing a ticking sound. I have changed the spark plugs on the passenger side, because that's where the ticking sound was coming from.
Come to find out the last spark plug in the back was finger loose. Got them changed, on that side. Still have the miss after warmed up along with the ticking. Few weeks fast forward I put all 8 new COP on. Same results. I also have changed the oil and filter both with Motorcraft. Where I could look? I also have a 1 year unlimited mile power-train warranty.
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I have a 2004 F150 5.4L 2WD auto. I had the cam phasers and timing cover done at the end of 2014 and the truck was great. Back in december, I parked the truck and when I started it the next morning, there was a horrible miss. I left it parked a month or two, then tried starting it up last week. Nothing.
So I had it towed to the shop. They found the starter was bad, and the only code it was throwing was P0341... Cam sensor bank 2. I had it towed back to my house, replaced the starter and the grounds and fired it up. It had the worst miss on the planet and died shortly after being started. I replaced both cam sensors, and now it starts right up and runs... but still has a bad miss.
I used my scanner and its still throwing A P0341 code almost instantly. It sounds like a bad miss that slightly gets better when you give it gas... but its not throwing any misfire codes or anything.
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We've got a 2006 F150 with a 5.4 in it. One of the new kids was told to change the spark plugs, then when I went to start the truck the next day it was missing bad. Plugged in the Ford IDS, number 7 cylinder is dead. Only codes are for that cylinder misfire, and random miss on startup. So, I double checked the kids work and it was all fine. Tried putting a new plug in, didn't work. Moved the coil to a different cylinder to see if the miss would jump, stayed on number 7.
Used a noid light to verify COP harness was working, and it was. Put a new coil on it anyway since I had one, still missing. Used noid light to verify signal going to injector for the cylinder. Signal was good, replaced the injector for the cylinder. Still misfiring. Ran a compression test and the cylinder has good compression. The threads for the plug are fine, not cross threaded or torn out. The only thing I can think is that the PCM has gone bad in a way that its firing the injector/COP, but doing so at the wrong time some how.
Every other cylinder is running fine, O2 sensors fine. PCM isn't trimming anything back to account for anything, and if it was it would do it to multiple cylinders to keep the engine balanced. Cant think of any more tests, and I don't believe there is anyway that the airflow could be restricted to only 1 cylinder, but I could be wrong. Wanna try and solve this to keep from sending it to the dealer.
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I have a 2005 5.4 F-150. First off it came to me on a rollback because the owner tried to replace his plugs after he noticed it missing and of course broke one off. So after I extracted the plug from #8 cylinder and installed a new plug I cranked the truck and it was idling very rough and had a terrible miss around 1200rpm. I pulled the codes and got several misfire codes and ignition coil faults on #5,6 and 7 cylinder. Popped in 3 known good coils in these 3 cylinders with no difference.
On Mode 6 on my diagnostic software you could watch the misfire count steadily increase on #7 and every now and then there would be a single misfire on #5 and 6. It also had several codes for O2 sensors biased, stuck rich on that bank. Well since it had a brand new plug and coil, I popped an injector in #7 and havent had a single misfire on it since and it also started idling alot better and all the O2 codes went away. The problem I am having now is #5, 6 and now 8 will randomly misfire, sometimes build up a steady count on one of them, sometimes just skip around between them.
The truck has brand new plugs in all 8 and new coils on this bank also. The truck has 115,000 on it and does have some cam phaser noise on the bank causing the problem, but its not too terribly bad, I have heard alot worse. My problem is something on that bank only as the passenger side bank is fine. I am wanting to say cam phaser now since this is the side with the noise. I have changed them before but have just experienced the noise, never one running like this because of it. Possibly jumped time a little?
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