Ford F-150 (2004-2008) :: 5.4 3v - Rough Idle / Stalling And Misfiring
Apr 19, 2017
I recently bought a 05 f150 with 5.4 3v and 195k miles needing some work. Ran great, just had a code for timing over retarded. Originally it had a cracked timing cover, so i took it off to replace and found broken guides and bad tensioners on timing. I installed new guides, chains, and tensioners, and cleaned phasers, and put back together only to find it ran terrible and had a phaser rattle. I then went in and installed phaser locks, which took care rattle but not the running issues. I can not figure it out.
ISSUES: My issues almost mirror what is said in this thread here, but this issue was never solved. [URL] ....
My issue is when started cold it starts right up, idles ok, runs ok, although a bit sluggish. Once its warm it stalls at idle, shudders when giving throttle in overdrive, and if you kick it down it will continually backfire, and slowly accelerate... it kicks down but acts like its only getting 1/8 throttle, just kind of hangs at the same rpm and slowly climbs in rpm. Sometimes it wont backfire as much, and sometimes the check engine light flashes. After it stalls at idle and you start it back up it sounds like it shudders/backfires for a split second then starts.
It is throwing many engine codes, but most are from the phaser locks. Throws code for timing over advanced on each bank (phaser locks lock them fully advanced), cam timing codes for each bank, and then a code that doesn't have to do with the timing, P2106. I am going to run some live diagnostics on it today and report back but I am fully at a loss.
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I have a 2005 5.4l f150. 105,000 miles. Recently While on a trip I experienced rough idle and stalling at idle. I drove it home 2hrs. The ride home was challenging. Poor acceleration, rough idle. Took it to the dealer and was told I needed plugs and I was 5qts low on oil! Not sure where the oil went. It hasn't been leaking and never seemed to burn oil in the past. They did the tune up. Picked up the truck. It ran fine while cold. Upon warming up it ran rough at idle and stalled just like it did before. Took it back, they said "you need a new engine. Upon warming the oil pressure drops indicating internal engine damage". I took it to a local guy he says replacing the cam phasers might fix it. What's the consensus, should I try the cam phasers? Look for some other potential problem or trust the dealer? (They did refund me for the tune up)...
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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 have an 2006 f-150 King Ranch with 103k miles and it was misfiring and then stalling when stopping at lights. Both cam shaft sensors and all coil packs were relaced then it was still misfiring. The head was recently replaced and now they are waiting on a new computer. When it starts misfiring it vibrates the whole truck and the engine light flashes. If you turn the truck off then back on it will run fine for about 50 miles. Im worried that replacing the computer is not going to fix it, what else could it be?
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My 05 was running rough and misfiring quite frequently. After much deliberation, I took it in for a diagnostic hookup. The dealer said my driver side cat was clogged. Lucky for me, I was just under the warranty period(79673 miles). I have had it replaced and I can feel a noticeable difference in the way it runs. Could a clogged cat have made it run that poorly or am is it just in my head that it is running alot better?
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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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My 2004 fx f150 with 177K miles is stalling (rpms bottom out) driving down the road and coming to a stop (coming to idle) and when trying to park. AND, its an intermittent problem.
Of course, not spitting any codes or CEL's. I've searched the site and there are multiple types of the same issues and solutions. Narrowed it down to either the dreaded vacuum line sandwiched against firewall and engine compartment, OR the cleaning of MAF, throttle body and IAC valve.
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I have a 2006 f150 it was making a knocking noise after the engine oil temp reached 160* and made the noise to 1700rpms. I thought it was the cam phasers so I replaced them. The truck is still making the noise and running rough and stalling but not as bad and not as often. Before it did it all of the time. The truck is timed properly. I had a new cam sensor and tried it but that did not work. I watched vct on the scan tool and both cams are in sycn.
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2004 Trailblazer 6cy. 2WD - has been experiencing a very rough idle, engine shudders - no matter how long it's been warmed up. Wants to stall off red lights and at very low speeds. Not throwing any lights yet - but the speedo is out ( a cam shift typical problem for this car) so I don't trust the console for lights. Worse when the heat or air is on. Rides fine with more gas/higher speeds. Definitely worse in colder temps but continues even after 40-50 mins of driving. I've heard a number of things, but can't afford to fix them all. I've heard plugs, dirty throttle camshaft, sensors, cam actuator solenoid, etc. All seem to have people who said it fixed and didn't fix the issue. Worried I'm going to stall pulling off a stop and rear end someone any day now. Where do I start!?
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I just recently purchased a used taurus and was experiencing rough idling and misfiring during operation. I replaced the EGR valve, the egr sensor, coil pack, spark plugs, iac valve, as well as check for vacuum leaks near all the hoses. I am a novice when it comes to this, but I was able to change those without issue. The misfiring was fixed during driving, but I still have rough idling. The needle seems to stay in check pretty well and the check engine light isn't on, but the car kinda hesitates and it causes the car to rock when idling. You can also feel the stuttering and rocking when cruising at very low speeds (5-15mph). I've already plugged in a decent amount of money into parts and am running out of patience when it comes to fixing what is a "potential" problem, and it winds up not fixing much.
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I recently picked up a 2wd 2002 F-150 with a 4.2l V6 that has just over 300k miles. The CEL is on and I'm getting P1131, P1151, P0316, P0305 and an occasional P0301. It has a very distinct misfire from around 1,000 rpm and smooths out between 1,500 & 2,000 rpm, the idle rpm occasionally bounces (sometimes enough to stall), and the idle is sometimes rough.
I have replaced the plugs, wires, fuelfilter, and replaced a leaking PCV hose. As I have changed things the symptoms have improved some but they are still there. While capturing some livedata it kept going out of CL and into OL Fault. When it would the idle quality was crap and the miss was much more significant. I would have to put it into D hold the brake and run the RPM's up to just over 1k to get it back into CL.
After I got done with the data stream at idle, I set the parking brake held the foot brake and put the truck in D then ran the rpm's up to around 1,200 & held it there. The truck stayed in CL but it would cycle between misfiring for 5 - 10 seconds then clear up and run smooth for 20 ' 30 seconds, every time it cycled there was an audible click that could be heard. Also, the AC was off the whole time.
Live DataStream @ Idle: CL
CalculatedLoad Value - 12.9- 14.1%
EngineCoolant Temp - 103degrees C
Short TermFuel Trim B1 - 32.8%
Long TermFuel Trim B1 - 0.0%
Short TermFuel Trim B2 - 32.8%
Long TermFuel Trim B2 - 0.0%
Engine RPM - 816 . 846
[Code] .....
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My 99 Explorer XLT V6 SOHC has been misfiring lately. In idle the RPM needle fluctuates a bit and the vehicle vibrates and shakes. At night when the lights are on I notice them dim a bit as the engine struggles in idle. It doesn't stall very often at all. Accelerating I notice way less power and the engine studders. That's when the engine light comes on flashing. Then remains on solid afterward. I brought it to a mechanic friend who read the code and it was cylinder two misfire as well as the O2 censor.
I replaced the plugs and leads and censor. Noticed the plug in cylinder two had little to no gaping. Thought I had fixed the problem. The vehicle ran perfectly. Three or four days later driving on the hwy same problem came back. Thinking it must be the coil pack I got one for a good price and replaced it. Again, the truck ran great for four days and now the problem has returned. Same thing, shaking studdering and flashing engine light. I have verified the locations of the wires and plugs a few times so i believe they are all properly installed.
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I have an 02 ranger xlt 3.0, it started having a rough idle, codes say cylinder #2&3 misfiring, changed plugs, wires, coil pack, didn't work, still same code, checked injectors on right side, all 3 had ohm reading of 15.8-16.5, the injectors were clicking like they are supposed to, sprayed carb cleaner around the intake ports, didn't change the idle at all,what else can I check or do? with out tearing the engine apart, unless of course I have to, the truck has been very good to me, it's got 205,000 miles on it, I need it to last at least another year...
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I have a 2006 f150 I just bought after my F250 was stolen. It has about 70k miles. It has been running pretty rough ever since I got it. It finally threw codes so I tried to address all the issues. Changed out a couple coils and all the plugs (motorcraft platinum). The camshaft sensor was also bad. Truck runs much better but still has an idle issue I cant seem to nail down.
I assume its something to do with air intake. It doesnt happen all the time. It runs rough and knocks and sometimes dies. If I give it gas it stops. I read it could be the idle air intake valve, but then I read that this model doesnt have one. I also read that air intake issues dont normally throw codes. Are there any common problems I could look for? Would cleaning the throttle body do any good?
I know the basics, but this kind of thing is tough for me to troubleshoot. You may have already seen me post this problem, but I didnt get much response so I thought I'd try one last time.
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Ok, so I just replaced the entire timing set (phasers, chains, sprocket, tensioners ect) on my 2004 f150 5.4l about a month ago. I also extracted ALL 8 spark plugs and replaced those with the Champion 1 piece plugs. In addition, I replaced the intake manifold because I did this job when it was 20 degrees outside and I found a crack. Soooo, all that being said I put the whole truck back together and it runs like New. Until about a month later. When the engine gets hot, maybe after about a 30 minute drive or so, it has a really really rough idle until I give it a little bit of gas. Then it clears up. It has only done it 3 times since I put the engine back together. It might go 2 weeks and not do it. No codes. What I could be? EGR? MAS air? Only other thing I can think to say is if you get on it out on the highway, after about 3k rpms it seems like the power drops off quite a bit. Like the engine isn't getting enough fuel. I guess it could be just me, but it just doesnt seem right.. I guess I could try to unplug the MAS air flow sensor...
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I hopped in my truck this morning, fired it up, and it idled nicely. I drove around the corner, and noticed that the truck was barely responding to the throttle. Then things got shaky. It was a very rough idle, almost like a misfire. But I managed to get the gas to respond and got the revs up to about 3K and it seemed to run smooth.
No CEL either. Currently, I have no place to really look at my truck as I don't have a garage, or driveway for that matter. I don't have a scanner that can read live data either. I'm limited in my tools currently as well.
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I have 2008 f150 with 5.4 and 54000 miles. It has a bad vibration or rough idle only when AC is on. When AC is off it runs very smooth. Runs great while driving with AC on. Tensioner pulley was moving a lot more than normal when engine started vibrating so i replaced it and the belt but it didn't work. I also checked the other pulleys and they are good.
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Is it possible to have an intermittent injector problem I am having the same problem with my 2004. Its not all the time its rough only at idle constantly. If I keep the rpms up it doesn't do too bad...
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An injector stuck open on my 05 5.4 and bent a rod. I had a new rod put in and all new revised Motorccraft injectors. This was about a month ago. Truck has ran great for the past 3 weeks until today I put it in park and it idles real rough, put it in gear and it smooth as butter again? (Once in a rare while it will continue to idle rough in gear for a few seconds but then clears up.) New motorcraft plugs were put in right before it bent the rod. The truck runs real strong other wise. I am about done with ford this pickup has been the biggest pile I've ever owned one thing after another and just when I think its fixed its some other stupid problem. I'll start by cleaning the maf and throttle body. Could it be a bad coil?
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My 99 Explorer XLT V6 SOHC has been misfiring lately. In idle the RPM needle fluctuates a bit and the vehicle vibrates and shakes. At night when the lights are on I notice them dim a bit as the engine struggles in idle. It doesnt stall very often at all. Accelerating I notice way less power and the engine studders. Thats when the engine light comes on flashing. Then remains on solid afterwards.
I brought it to a mechanic friend who read the code and it was cylinder two misfire as well as O2 censor. I replaced the plugs and leads and censor. Noticed the plug in cylinder two had little to no gapping. Thought I had fixed the problem. Vehicle ran perfect. Three or four days later driving on the hwy same problem came back. Thinking it must be the coil pack I got one for a good price and replaced it.
Again, the truck ran great for four days and now the problem has returned. Same thing, shaking studdering and flashing engine light. I have verified the locations of the wires and plugs a few times so i believe they are all properly installed.
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I purchased an '08 F150 about 6 months ago, and have a problem that two mechanics haven't been able to solve. The truck has a 5.4L engine. Unfortunately, I bought from an auction and the 30 day warranty expired before I realized the problem.
After a longer drive (30 minutes to work) the engine is warm, and I always back into my parking spot or driveway. In low gear, it begins to idle very rough and the engine shakes. If I leave it long enough, it will stall. Usually I pop it into neutral, give it some gas, and its fine. I just bought a camper trailer, so I'll need to use the lower gear when backing up.
So far, the engine has been flushed twice, the solenoid replaced and phaser replaced. The second mechanic has recommended I contact a dealer, but haven't had luck with them with my previous Explorer. What it could be? I will be getting the diagnostic paperwork this week.
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