My sons 05 F150 is randomly dying during low idle. We removed and cleaned the TB and cleaned the MF sensor. For example, if he is coming up to a stop or slowing down, the truck will die, but starts right back up. So far no CEL and truck seems to idle and run fine, just ever so often will die.
Anything to check on the 5.4s
I recently had my alternator and battery replaced due to my truck dying out randomly on me, tested the alternator and failed, replaced battery, and still got the same results, battery gauge seems to drop quickly, what could be going on, I have been told to replace the fusible link that goes from the battery to the alternator....
View 1 Replies2004 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 have a 2004 6.0 that has been pissing me off to no end lately. I has a random dying/no start problem. If it idles for ten minutes, it'll die sometimes. And if I drive it and shut it off, it won't restart sometimes. I just drove it three hours on Friday, shut it off and it restarted immediately. Drove it around town all weekend and it started fine every time.
Now driving it home and stopped for fuel 45 minutes in, and it won't start. I have all sensor readings in spec except for I have no ficm sync while cranking. I have about 5k miles on new hpop, injectors, ipr valve, icp sensor, oil rail rebuilds, stand pipes, ficm and engine harness and injector harness. No codes either. If it sits for a couple hours it'll start fine. I've wiggled as many wires as I can and it still won't start. I have rpm while cranking on my edge too. Don't know if that would rule out crank sensor or cam sensor.
My wife drives a 2004 2WD Explorer with the 4.0 SOHC motor. We have had a problem now for over a year and a half of it randomly dying. There is not telling when the engine might die besides the fact that it happens when you let off the accelerator to brake or make a turn. It only happens at slow speeds. At a stop light or stop sign usually. The car will always start right back up. It has been to a couple of Ford dealerships and they haven't been able to diagnose the problem. The check engine light is on and it is giving the code p0456. This code definition is an EVAP small leak detected. Probable causes for the code are:
1. Defective, loose, or missing fuel cap.
2. EVAP Canister broke, hose cracked or not connected.
3. Purge or vent solenoid defective.
4. Vacuum leak at engine.
I don't think it's the fuel cap that would be making the car die. I used carburetor cleaner (I know its not the safest ) and sprayed on the vacuum lines that I could find to try and diagnose a vacuum line leak but nothing seemed to effect the engine. Do one of the other probable causes from p0456 could be causing the dying or could it be something else???
I'm getting used to just expecting a problem with this car every 3 months or so. Anyway, I have a 2004 1.8T GLI which lately has been idling and then stutters and dies. The first time it happened it turned right back over and started driving. So I drove it home and cleaned up the battery terminals and it didn't seem to have a problem since. Now about a month later I was just parked and turned it over.
It was on for about 1 second and then it stuttered and died. I can hear the starter engaging and turning the engine, but it won't turn over. I also checked the battery levels and its showing 12v so I don't think it's electrical? From scanning forums here it seems like the two prime suspects are spark plugs or the fuel pump?
Also checked the fuses and none are burnt. I could see it being the fuel pump because that would explain it randomly stuttering and dying. Also the car is at 149k miles and that is the original pump. Wondering if maybe it being at 1/4 tank isn't working either? Going out to buy a vagcom and see what codes it throws!
my 05 f150 5.4 with 76,000 has a weird rumble at idle, I don't think its a miss and there's no codes and when I put it in park it goes away or if the idle changes just a little you don't feel it. And you feel it through the brake pedal the most its not real bad butb enough to bother me.
View 5 RepliesI 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)...
View 14 Replies2005 f-150 4.6l v8 rough idle only when truck is to normal operating temp. I have run several gas system cleaners through the truck. I replaced the air filter, the fuel filter and the spark plugs. I am only getting 14to 15 mpg mostly highway. No DTC's are showing up. The truck only has 50,000 miles.
View 6 RepliesI have a 2005 F150 with the 5.4 in it and its getting ready to hit 90k here soon. I just bought the truck less than a month ago and Ive developed a very loud knock at idle. It sounds like it's coming from down in the oil pan. That's where I can hear it the best. When I give it gas and it reaches about 1400rpm it goes away to where I can't hear it. What would this be? I checked the oil level and its fine. I thought at first maybe it was just a heat shield from the cats loose and rattling but its gotten worse and louder. I'm not driving it until Monday when I take it back to the dealer because I still have some warranty left but I would like to know what I'm looking at maybe. This isn't the cam phasers is it? I've read somewhere that these motors don't get good oil pressure in the heads some places?
View 3 RepliesI just purchased my first F150, 4.6L V8, 55,600 Miles. It intermittently has a rough idle and only seems to be when the engine is hot. I've had engine and tranny mechanics look it. The spark plugs have been inspected and are within an acceptable range. The throttle body has been cleaned. There are no trouble codes of any kind. What I can check next?
View 13 RepliesA week and a half ago I went out to my truck to go somewhere and I got about 2 blocks away and the truck started running really rough and had a big lack of power, so I turned around and scanned it with my code reader and the codes I got were p2271, p2196, p0303, p0012, p2197, and p2272. since then I've changed all the spark plugs, boots, swapped all the coils and injectors from a great running truck, fuel filter, and the bank 1 upstream O2 sensor.
the other thing that came to mind that could of caused the problem is that a few days before the problem started. I jump started a co-workers car and he hooked the cables up backwards on his car. Could this be the cause of the problems I'm having.
The truck is an 05 F150 FX4 5.4 with 180,000 miles on it.
I have a 05 fx4 5.4L with 85k on it. It has started idling rough when i come to a stop light or slow down to 10 mph or less. It only does it once in a while. There doesn't seem to be any real pattern. The motor shakes until you rev it up and then it goes away.
I have cleaned the maf, put in new air filter and fuel filter. And put in a new battery. Would a coil act like that? Maybe plugs? Or a vacuum leak?
my f150 running right so i can enjoy it like everyone else does. I have a 2005 Ford f150 with a 5.4 auto.
It has a rough idle(shakes the truck), very little power, and poor gas mileage. Randomly It will throw a code for misfire on 1 and/or 3 on start up only. It does seem to perform better within the first few of starting but dies right off after that. In fact i got stuck in the snow the other day and it could barely break the tires loose to try and get it out (almost put in 4low cause i didn't want to hurt the trans). I have replaced:
Cats
Fuel pump
Plugs (motorcraft)
Random Coils
Did the timing chains and phasers
MAF
All new injectors
Intake gasket
Was at my mechanics and had a scanner on it and at idle the 1-4 cylinders are all show a negative cylinder contribution. But when you rev it up they all go to 0 across the board. Was kind of thinking about the Variable Timing solenoid.
I have a 2005 f150 5.4 3 valve with the p0012 code the truck runs good has a rough idle not sure if it is worth changing the vct or not the truck has 190000 miles....
View 1 RepliesI have a 2005 F-150XLT with the Triton 5.4L. The other day while driving on side roads (Paved, not back roads) I noticed my CEL on and it was blinking. There was a very rough idle as well as a big loss of power. When I pressed the gas pedal it was sluggish to say the least. I have yet to get a computer on it, since I had to order one. There is also a light gas smell, only smells near the rear of the truck. From what I am guessing, I think it is either a spark plur or a coil over pack, Truck has about 56K on it.
View 1 RepliesGetting these codes what they mean or need to do ..to get rid of them...p0022, p0171, p0174, p0183, p0340, p0300, p0316, p2006 did timing n plugs fuel filter n gas filter getting very bad gas mileage it runs good but here a ticking in motor at idle and more as u accelerate, running rough....
View 7 Replies2005 f150 Lariat 4x4 5.4
Had phasers, tensioners, chains, guides, and sensors replaced. After driving the truck, it started to get a rough idle at low speeds, primarily in reverse. Changed both vct solenoids with no results. Started to get p0022 code. Changed the oil with motorcraft filter and 5w-20 twice after the work had been done, thinking it might need it. Vct's were a little varnished, but not too bad.
After a couple days of light driving, got a misfire on #3. Replaced the coil and it hasn't been back since. I am stumped at this point.
The computer show the timing to be at +13 when sitting stopped and in drive. It fluctuates a little, but not much. When the truck goes into a rough idle. The rpm's fluctuate wildly. It seems to be happening more frequently, the more I drive it.
My F-150 has developed a rattle and vibration at idle that only occurs with the truck in gear and stopped (with the brake depressed.) The noise appears to be coming from the front of the truck, perhaps from the driver's side (though it's difficult to tell while sitting in the cab).
Before I go crawling around underneath with my son holding the brake while the truck is in drive--I would sure like to know where it might be best to point the flashlight.
I just locked out the cam phasers on a 2005 f150 with a 5.4. It now idles pretty rough. If I blip the throttle the revs will rise and then drop again, and it barely catches in time to prevent a stall. If I continue to tease it this way I can usually get it to stall. I'm getting no CELs or anything, but I intermittently will get a P035x code (it seemed to rove. I've gotten cylinder 1, 4, 6, but not consistently.). I have chased those around by swapping coils, checking/cleaning the connectors, etc.
I am kind of thinking that these codes are a symptom of my idle issues, and not the actual problem. What could I have done wrong? Could it be a vac issue? I had basically the entire ECU harness and all the vac lines disconnected to do the job, but as far as I can tell everything has been reconnected to the correct locations. I did have an SCT tune done to remove the phasers in the ECU. I installed it and still have the issue, so for now I am on the stock tune just to eliminate any variables.
Could my tune be the issue? Is this how you would expect the engine to behave with locked out phasers and no corresponding ECU tune?
I have rough idle problem after changing spark plugs, fuel filter and battery. There was no rough idle problem before this work was done. What could be wrong. Once the speed is above 20 mph it seem to run fine but at stops it vibrates and seem like it may stall!
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