Ok new issue that started yesterday only get it at idle. Runs great above idle no real power loss or change in fuel econ. Haven't really had a chance to test much. I was thinking maybe a injector issue but I don't know
View 14 RepliesI 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.
2004 f150 fx4 w/ 5.4 .I have a code that read " system adaptive fuel to lean bank 1 " and the same for bank two. So, I got on here and did some research. Cleaned the throttle body, maf sensor, air filter, looked for vacuum leaks, changed the fuel filter and it still is running very poor at idle and it seems to be getting progressively worse...
View 2 RepliesI 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.
View 9 RepliesI have a Ford F150 XLT. I have 67000 miles on it and the other night it just started running rough out of no where near idle. Once you got over 20mph the rough running would go away. I took it to get an engine change and engine flushed but it came back. It doesnt always run rough near idle or below 20mph. The Ford dealer says my engine has only 22 psi oil pressure near hot idle and cant engage the VCT phazers and they want to replace the whole engine.
View 1 RepliesI just bought an 2006 f150 4x4 with a 5.4l 3valve, and this morning when I pulled into work it was idling Rough as I let off the gas and rolled into my parking spot. No check engine light or nothing, just when it's in gear Rpm is at 600-700 and vibrating. When I shifted it into neutral or park it went away and the engine ran smooth. According to the oil pressure gauge I've got good flow. I was told from the dealer that they replaced the cam phasers, timing chain and put new spark plugs in it. What the issue is here?
View 1 Repliescompletely stock 2006 4.6, 230,000 miles, I purchased and can vouch for everything after 106,000.
Two separate issues...have had a slight ticking noise growing for about the last two years. Seems to get slightly worse near an oil change but that could be my imagination. It has finally gotten loud enough that my wife (who drives with the delicacy and observational skills of a Sherman tank driver) actually mentioned it to me the other day. It is directly related to engine speed whether the truck is in gear or not. I kind of think it might be a manifold gasket going out but am not sure. Am not very worried about it but...felt like I needed to mention it because of my bigger problem....
Truck has gotten very "cranky" on startup in the last week. Has a rough time finding an idle speed but typically sorts itself out after about 5-10 seconds. This afternoon it started idling rough at a stoplight. It got steadily worse and noticeable even at speed. Four stoplights and nine miles later it threw a code and coincidentally, I was in front of an Advance Auto. They read it and said the #3 cylinder was not firing. I bought an ignition coil, drove 15 miles home and changed it. From everywhere I looked online, this is the second cylinder from the firewall on the passenger side.
Had a little trouble getting it in and am not entirely sure it is fully seated in the slot, but I can't get it to go any further. Seems as tight as a couple of the others. I disconnected the battery to clear the codes, cranked it up and it seems to run "better", but still has a rough idle. Just test drove it about 12 miles and no check engine light but the idle has not cleared up. I think coil must be working fine because I have no issues at highway speed. Earlier, when I backed off the gas you would feel the miss very badly, but not as much when under a load.
I just bought a used 2006 Ford F-150 it has the Triton 4.6L V8. Seems to be running ok a little white smoke on start up, but the other night after leaving work at 5am when it was around 10 degrease freezing. When I started my truck it was idling very rough like it was about to die but it didn't after it warmed up it was a little better but I think I seen black smoke from the rear end, but like I said after it was warm it sounded like normal so I started to head home and got about 15 mins down the road and it started to run very bad like it was bogging down and lost all power if I pushed on the gas all the way I was not picking up any speed but if I let off the gas the truck would jerk very bad and gain speed. But the next day in the morning it started up fine no problem I even drove it around town with no issue. What this issue could be?
View 1 RepliesI recently bought a 2006 that idles rough, not real bad, but bad enough for me (and my 9 year old kid!) to notice. I asked the dealer where I bought it and they put it on the computer and said everything checked out. He said "it's a characteristic of this motor." I've never heard of such a thing. The truck has 27,000 miles on it and the dealer flushed the fuel system. He said the throttle plate had a lot of carbon on it, but it still idles rough... 4.6 idle rough?
View 13 RepliesHave an 06 F150 5.4 3v with no power. spark knock. rough idle. wants to die while driving, and random misfire code. Have replaced fuel pump, filter, coils and plugs. What to check next? Already thought of EGR - it doesn't have one.
View 4 RepliesI 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.
Yesterday I started up my Phaeton after it had been sitting for about almost a week. When it turned over it had a rough idle and also a fuel smell, as I drove it the idle went away. However I have never had this happen before and the fuel smell concerned me.
View 4 RepliesI have an 07 gs350 and sometimes when I start the car and sometimes at idle I can smell a little bit of fuel smell and it goes away within a second or two. I smell it more when I start the vehicle.
View 11 RepliesI've noticed a strange problem that makes it next to impossible for me to use his truck unless the vents are off or I have both windows all the way down with it on. It smells like it has a fuel leak of some sort and in the cab of the truck it smells bad while driving and gets worse when sitting still, to me it smells like gas and when I open the hood on his truck after idling about 5 minutes or so I can smell it in there so i know its somewhere under the hood but for the life of me I can't see anywhere where its leaking or anything like that but I can smell it all darn day. His truck is an 05 F-150 with a 5.4 and I'd like to figure this out before it becomes a real big problem. I've worked with fuel injected cars and trucks before but I have little knowledge of the mod engines at all. And he is still driving it like that and I just wanna make sure it either is not gas or is just something simple I'm overlooking.
View 12 RepliesMy wife has a 08 F-150 LIMITED and at random times gets a raw fuel smell through the air conditioner ducts. It will happen after we fill it up and it will happen @ a 1/2 tank. No smell under the hood and no visible leaks from anywhere. Pretty important issue to me.
View 8 RepliesOk, 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...
View 14 RepliesI 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.
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.
View 1 RepliesIs 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...
View 1 RepliesAn 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?
View 3 RepliesI 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.