Ford F-150 (2004-2008) :: Inconsistent Stutter Upon Accelerating Between 40 - 50 MPH
Jan 16, 2012
I have a 2004 F-150 5.4 Liter 4X4 supercrew with 6" lift and 35" tires. The truck has 123K miles on it. I am the second owner of the truck. In early fall the truck started making what I can only describe as a mild and inconsistent "stutter" upon accelerating between 40-50 MPH. It does not do it all of the time and really depends on the speed at which you accelerate. Sometimes it will happen between 50-55 MPH but primarily it is between 40-50. If you accelerate quickly though at that speed, it rarely ever happens.
Anyways, I changed the fuel filter (pretty sure it was the original as it was nasty and had chunks falling out of it), flushed the fuel injector system at a shop, gassed it up and treated the tank with fuel treatment, and removed the AIRRAID air filter, cleaned it out (blew out with air, flushed with water, dried and re-oiled it). The truck had A LOT more power behind it, my fuel mileage increased and for about a day, this stuttering did not occur. It has now started up again.
My question is whether or not this could be caused by old spark plugs or is it a transmission issue? The truck runs great otherwise. We've looked at the plugs and they appear to be the original plugs. I bought the truck with about 100K on it and have put the rest of the miles on myself. I'm trying to figure out if it is an issue with the plugs or if it is related to the automatic transmission as I'm sure the fluid hasn't been changed in it either. I know I'm going to have to do both but want to know what is more likely the issue at hand.
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Changed my spark plugs and fuel filter but my fuel mileage seems to go down, used to get a average of almost 16mpg on a tank, now I'm down to 13.5mpg and also have the occasional stutter at different speeds/rpms. Is it time for new coils?
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What can cause shutter in 1998 f-150 4.6 4x4 4r70w when slowly accelerating?
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I have a 1997 Ford F-150 XLT 4.6L 4x4 Auto and it's having an issue. My truck has recently developed a stutter when accelerating. It feels like a serious misfire and actually pulled a code for a misfire on cylinder 7 (although I haven't been able to get the code to appear again). The plugs are pretty new, I think I only have around 10k miles on them so i figured it might be the coil pack. I bought 2 new coil packs but only one was in stock so i replaced it on the drivers side bank (which controls cylinder 7) and it didn't fix my problem. When I first start the truck and drive it, it isn't very noticeable, but as I drive the truck for a few minutes, the stutter gets more violent. I will replace the other coil pack tomorrow, but I have my doubts it's the problem. It acts just like a bad coil pack.
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I have a early 99 7.3l that seem to cut out and shudder while accelerating at low rpm's below 2000 once I am above 2000 rpm it seems to go away similar to a dirty carburetor thinking injector problem...
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I've noticed that when accelerating from a stop and turning onto an adjacent street to the left or right, there seems to be stuttering or shaking coming from the engine. I'm usually in ECO and only 1/3 of the way into the "engine half" zone on the HSI. It's not consistent but has become a bit of an annoyance.
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I'm working on a 1999 Chevy Astro 4.3L with an occasional crank, no start condition. On any given day, this vehicle will start right up and run fine, although some days it will start right up and have a part-throttle stutter; not a dead miss, but a stutter when accelerating that sometimes goes away. When it has the stutter, disconnecting the MAP sensor will cause the stutter to go away completely. I replaced the MAP sensor, but nothing changed. Today, it's back to its crank, no start attitude problem. The basics check out fine: good, strong spark at the wires, 60-65 psi of fuel pressure, and I even pulled the plenum to verify fuel is firing from the injectors. Everything seems to be happening as it should except that it will not start and run. I even tried doing the Passlock relearn procedure on it, despite spark and fuel happening when it should, one or both of which would normally be eliminated by the security system, but to no avail. What could possibly cause this here-today-gone-tomorrow no-start condition?
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I have a 2011 Chevy Impala. When accelerating from a stop it will frequently stutter then jerk forward. The first time this happened I thought someone had rear-ended me.
I've been to the dealer several times about this however they say they cannot isolate the cause. More importantly I can't seem to get the vehicle to repeat this problem when I've brought it to the dealership.
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Ok, I have done some reading here and from what I can tell I don't think that it is the cam phasers or solenoid. This only ticks when you give it gas. Sounds fine at idle, going down hill, anytime I am not on the gas. Injectors maybe?
2004 FX4 5.4 176000 miles....
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1990 Mazda Protege with a 1.8L DOHC, manual 5-spd transmission, ~173K miles on it. On my way home the other day, the car ABRUPTLY started to run very rough - with what I would call repetitive and incessant stuttering when accelerating (though I am by no means technical with respect to cars). I shut the car down, hoped the problem would go away, but when I started it up later that day, the problem was still there - the car BOTH idles rough and doesn't accelerate very smoothy. When I come to a stop, the car feels as if it's going to stall but stays running. This afternoon, I took it out on the road for ~3 mile drive (up to ~ 50 mph) and the problem is the same - but I did also notice, when driving, that the car gave off a smell reminiscent of firecrackers - perhaps a sulfur-ish smell. I googled the issues I was having and I got a whole array of problems - ranging from simply bad spark plug wires (which have been replaced in the past 1.5 years) to a stuck EGR valve .
Here's some additional info on my car: -Was just in the shop 2wks ago for overheating - found the thermostat to be bad - they replaced it and I no longer have the overheating issue. While there, they also replaced the belts for the alternator and water pump (Which had been squealing for quite some time) -Spark plug wires and distributor cap were both replaced in the last 1.5 years -Last oil change was > 6 months (but less than 3000 miles) ago - all the fluid levels seem to be fine -Though I think it is unrelated, the car is also making a high pitched squeaking noise emanating from the R front of the car while driving - I suspect this is the suspension-related as the shop informed me that I have one front stablizer link broken while the other is loose (and when I push down on the R-front side of car while it is not running it yields a similar squeaking noise.
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Truck is 08' with 5.4, 3.55 gears, auto trans. 84k miles. Recently purchased from the TSA fleet trucks, so I have no clue what PM procedures were done prior to me getting it.
I noticed the following: when I get the truck into OD and then slowly decelerate (meaning I let it coast and im not braking) to about 40mph then get on the gas (normal acceleration) the truck bucks hard almost like when your spinning wheels on snow or ice and put the truck in 4wd and the front rear locks. or a limited slip rear that catches when one wheel is spinning.
if I accelerate hard the truck pushes thru it and doesn't buck as bad. I have searched this out and there are several threads about it that describe just about exactly what im talking about, the following have been brought up as possible problems:
1) bad spark plug/s and or coil/s
this seems to be the most common answer to the possible problem.
2)broke valve spring
3) bad torque convertor
So at 84k miles im thinking replacing the spark plugs would be fine to do as a PM. So coils.............should I just go ahead and replace them as well? I found them (motorcraft). does that seem right?
As far as spark plugs, I have already read the horror stories on the 04-08's breaking the plug in the head. I have also read that before 10/07 was the trucks that had the issue. my build date is 02/08. am I good to go with normal removal of the plugs? the best method I have read for removing them is spray carb cleaner down the hole and let it soak overnight and then the next day drive the truck get it nice and hot and remove them right after you park it,,,,
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i have a 2007 F150 Fx4, with 94,000 miles. When I hit the speed of around 40-45 and I step on the gas it starts to chug until I press harder down the it gets out and runs just fine. The thing that confuses me is it doesn't always do it. Id say about 3 times a week. I am replacing my fuel filter tomorrow. I purchased this truck with 85k on it, and this just started happening. The spark plugs have never been changed. And am thinking about taking it in to get those done too. I also tested all my injectors and they are all working. No codes have been thrown either.
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I've been living with a mild "clunk" or "bump" in the drive train when I would first begin to accelerate from a full complete stop. It would only happen after a complete stop. It almost felt like it could be normal, but it seemed to be getting worse over time.
At first I thought it was my transmission...but after some internet searching I found some threads talking about the slip yoke on the drive shaft being the cause. In that the slip yoke needs to be pulled apart and re-lubed.
Anyway, I thought I'd post and let eveyone know that after pulling the slip yoke and re-lubing with grease my issue is solved! The "clunk" is totally gone. 100% Smooth now. If has this issue I'd highly recommend re-lubing the slip yoke.
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On my 2004 F-150 SuperCrew, all I needed to do was remove the drive shaft at the rear differential (4 bolts, use 12mm 12 point socket or wrench). Then remove the FRONT clamp on the slip yoke boot. Then slide out the rear 1/2 of the drive shaft. Be sure to mark the drive shaft orientation with the rear differential flange and the slip yoke before you remove the drive shaft to ensure you put it back together correctly.
Re-lube the slip yoke, then slide it back together and reinstall the four bolts at the rear differential. Torque spec is 76 ft-lbs. I used Valvoline FORD-LINCOLN-MERCURY moly grease that I purchased at my local AutoZone. You'll also need to install a new band clamp around the rubber slip yoke boot. I got mine from AutoZone.
Here are some links I found with pictures showing how to do this. Both procedures below are on SuperDuties but its basically the same procedure. Just follow my specific details above for the 2004-2008 F-150
Slip joint regreasing
2004 F250 Slip Yoke Service
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i own a 2005 f150 supercrew fx4. Today as I was attempting to go out of town I was accelerating up hill and heard a noise, sounded like air coming through a window seal or scratching, which is not the problem. The noise only came on when i increased the acceleration, there is no power loss, the truck still accelerated properly and had good power, just that the noise came on. so i returned home only to hear the problem on flat land also, when pressing the gas to accelerate. The truck seems to idle fine and have no problem with low acceleration.
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my 05 is giving me these mini shakes when I accelerate and slow down. I also get a little bit at highway speeds. I was walking around the truck today and I noticed that the back right tire doesn't have a weight on it. I thought this was wierd. Could a weight have fallen off thus causing the vibrations, or is this normal for one wheel to not have a weight?
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I purchased a 2006 Ford F-150 XLT, 5.4 3V Triton. Last Thursday my check engine light came on, so I came to this forum and found out how to retrieve the code with out a OBD. It came up as a 0301 Misfire cylinder 1-10?
I went to the dealer and they said it was cylinder one, sold me a new plug and coil pack and they installed it for a nice $$$. On my way home it started to sputter again when you give it heavy throttle, I called they told me that I should change all the plugs and Coil packs, kinda makes sense but to have all 8 plugs and coils go at once it only has 83km on it.
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Ok, I have a 2006 Ford f-150 5.4L engine. it has 88000 miles on it. Here recently it has started acting up on me. It starts shaking violently when I slightly accelerate going up hills at any speed. On level ground it doesn't do it. Going down hill it doesn't do it. When stopped it doesn't idle rough.
It does this shaking when I barely press the gas. When it starts I either let off the gas or I push the gas to the floor and it stops. What is going on? This is the first Ford I have ever known. I don't know anything about these vehicles. I have read it might be the coils and plugs but then people have told me it might be the torque converter.
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I just bought a 2006 f150 exteneded cab w/ 5.4 V-8 and it vibrates when accelerating from a stopped position but not all the time---happens more when the wheel is turned. It definitely feels like the vib is coming from the left front side. I just got it back from the shop and the mechanic told me the vibration was stemming from the rear and that he exhchanged the fluid and added anti-friction additiver but that he expects the problem to continue.
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Strange noise from what sounds like the suspension when I accelerate and then when I turn also. Truck was in Hawaii so that might have something to do with it. How do I get these noises to stop?
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I've had my 2006 XLT F150 (5.4L) for about a month now and have recently noticed what I can only describe as a 'smacking' sound under my truck when I accelerate quickly. It sounds as if I had something stuck to my drive shaft that is slapping the underside of my truck....except I don't. I don't think that its the timing chain because it seems to be coming from under the cab (between drivers/passenger seat maybe). I hear it most often if I try to quickly accelerate from a normal speed (50mph or so) to pass another vehicle. I do not hear it otherwise. Starts with a 'tink tink' then sounds like something hitting the underside. I'm perplexed at what this could be.
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I have a 2006 f150 5.4l, and I have developed a problem. It seems the my truck has started to skip, or "pulsate" when I am accelerating. If I really get on the gas the "pulsate" goes away. This only seems to happen around 45-50 mph. Now this is where it gets weird. I have no check engine light on, and I have checked to make sure my light is working. I brought it to a garage and they told me something about Fords having a misfire issue that sometimes doesn't trigger a check engine light. . . . . now idk about that because every misfire I have seen triggers a check engine light, but I had them replace the spark plugs anyways. And it didn't fix my problem. At this point the only thing I can think of is possibly tranny.
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