Ford F-150 (2004-2008) :: Bucks / Jerks In OD Around 40 MPH When Accelerating
Apr 13, 2014
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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It just started doing it the only way I can seem to figure out how to explain it is at about 50 to 60 under slight acceleration or uphill it bucks or jerks like you have a trailer jerking. No check engine light this thing is driving me nuts... 2004 f150 5.4 ...
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I just got a 2006 ford F250 lariat fx4,and it's already at the shop.. when cold start it has some white smoke, but once I get up to highway speeds the truck jerks and bucks. turbo is putting out normal boost. I've changed oil and filters along with fuel filters. also put on a new serpentine belt and pulley, air filter and have everything cleaned real good. the truck is acting like it's starving for fuel. FICM or injectors ?
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My 2012 Santa Fe GLS 2.4L jerks and bucks while coasting. When you let go of the gas pedal the car would jerk. Is that normal for the car. The dealer could not duplicate the problem.
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I have a 2004 Hyundai Elantra with 130000+ mi on it. The current engine has 96000+ mi; the original was replaced because the previous owner allowed it to overheat, blew a gasket, and apparently warped the engine itself.
I have owned this car for about 6 weeks now. The car was driven roughly 160 mi from where it was purchased to my residence; no trouble on that trip. However, within the first few weeks of owning it, the car started making a squealing noise when I turned the steering wheel. I took the car to a mechanic and had the belts adjusted. This eliminated the squealing, but I was also told that the CV boot needed to be replaced (they asked if I had been hearing a clicking noise when turning, which I had but had thought nothing of), so I also had that repair done. Problem solved. Car seemed to be running fine.
Okay, on to the current problem. Something else I had started to notice, before I had the belts adjusted, was that it seemed to hesitate a little when going up hills, and sometimes when accelerating. It was a small thing, and I attributed it to my driving style (which probably isn't the best) and the fact that my area is very hilly and the car might be having a harder time with that. Well, this problem has gotten worse; I can definitely feel the car jerking, especially when accelerating (very noticeable when going uphill). The problem also seems to be worse at lower speeds, but I'm not entirely sure that I've nailed that down.
One thing I noticed is that it seemed to become much more noticeable after the last time I gassed up the car. It seems like it's getting worse as the fuel is used up, but that's probably just a consequence of using up fuel as I drive and I'm just looking for connections where there aren't any.
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Only happens with following sequence:
Accelerate up to 50's mph, let off accelerator, then re-accelerate..especially on an incline. Get a rough jerk motion until I either let off the accelerator or accelerate hard through it. It doesn't seem to occur when the Overdrive is on. No codes are thrown.
Been to two shops, one a general shop to diag the engine and to tranny shop but neither was sure. I guess I'll have to go to the dealer but I was curious what others think of the problem.
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I have a 1997 GMC Sierra extended cab with auto trans and 5.7 engine.When accelerating it bucks like it is underpowered. If I manually downshift to 3rd it runs fine. Once up to speed, I manually shift back to OD and it runs fine.
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2004 F150 XLT 4X4, 5.4, 142,000 miles... Plugs had been changed at around 75,000 miles... Shell gas used 99% of the time.
Shudders and jerks going up inclines (big or small). Bad gas is being reported at all the local stations...Started using Sea foam and Lucas fuel line cleaner/ethanol treatment. After three tanks of that, I ran tank down till low fuel came on, kept driving, and no more shudders/jerks and ran great while low fuel light was on.
OK...decided to fill tank with Non ethanol gas this time (not Shell gas), added Sea foam and Lucas fuel line cleaner, and shakes, shudders and jerks all the time now.
Before no check engine lights came on but for once when I romped on the pedal once to blow it out, but it went off once I let off. Today going to work, entering traffic, engine light came on, blinked and stayed on. Truck now shudders and jerks all the time when I give it gas, and can only drive like Paw Paw to keep if from doing that.
Local shop ran test and #7 cylinder is not firing and two lean fuel notices. It will be Tuesday before they can check and if needed, replace coil on #7 cylinder.
I'm thinking of installing a new Fuel Pump Control Modulator as per a thread I read here, but only after they check/replace the coil. AND ALSO...turning the OD off did stop the shutters/jerks.
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I have a 2004 f150 fx4. My truck starts to jerk around 50-55 mph at 1100 rpms and again at 80 mph.
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I have a 2006 F150 4x4. When the engine an transmission is cold it jerks/ Bogs when it shifts. After it warms up it doesn't jerk to bad sometimes but you can still notice it. Also when it shifts the RPM's drop low causing it to bog and jerk. RPM's will go from 1600 to about 800 when it shifts. It is and auto transmission. Today I wanted to try something so I pressed the button to turn the over drive off. Well it shift real good with the OD Off. Seem like with the OD Off it keeps the RPM's up a little higher so it doesn't bog and jerk. I put an Edge Programmer on it, but that didn't work. Still does the same thing with or without the programmer. I changed all my spark plug and coil packs. Truck goes great until it shifts.
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Its a 2007 f150 v6. has 55,000 miles. just got her new tires for Christmas. the truck has doing this for awhile. when you use the brakes the pedal pulsates and the truck jerks back and forth. Feels like bent rotor or something. I've been doing it about a year keeps getting worse. Last year I had the rotors turned and put new pads on got a little better. But not for long continued to get worse again. So I just bought new rotors and pads and still sucks. I thought it could be a bent rim so I just rotated the tires and still no better. Where should i go from here? calipers? something in the front end loose?
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I have a 2001 F150XLT 4x4, V8 Triton engine with offroad package that just rolled over 119,000 miles that just started giving me problems 2 weeks ago. When I accelerate at speeds above 40 mph the truck surges or jerks ( the best way i can describe it ) sporadically unitil I get to cruising speed. If I'm cruising at say 70 mph and go to pass some one and accelerate it does it again. The transmission feels like it shifts smoothly thru all the gears and there is no whining sounds, transmission sounds normal. There is no check engine light, so I assume a diagnostic check might not show anything. Advice from guys at work say possible ignition module, coil pack, transfer case ??? It never feels like the truck wants to stall and it never feels sluggish when accelerating like there is a fuel problem.
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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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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 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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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.
[URL]
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 bought New Camry 2014.5 LE. Most of time, my wife drives for short commutes to train stations and work. Its been 1.5 year and it still has less than $10K miles.
I feel it hesitates when I push the accelerator all the way quickly, then jerks. The engine revs up the moment I step on the accelerator but it hesitates before it actually picks up speed. If I step on the gas gradually, its fine.
I have Rav4 (4 Cyc) which does not behave this way.
I took the dealership and asked about it. The tech says it is drive by wire system so unlike old cars, which respond very quickly, may hesitate and considered normal. Some online article says the car's software learns a driving habit so it depends on the driver too but many other postings also suggest its a software glitch.
Is it really normal, a feature of 6 speed or is there a technical service bulletin addressing this issue so that I can show to the tech? Eco mode is turned off.
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I have a 1999 Passat 1.8t manual transmission... My car shakes like it's going to stall and sometimes actually stalls when I come near to a complete stop. The car drives really bad... it jerks when downshifting and on accelerating... The performance of the car is crap. also When i put the car into neutral and coast to a stop, the revs will bounce up and down. I posted a couple months ago about this problem and I was told to clean the throttle body. I then cleaned my throttle body and replaced the gasket. This problem went away for about 5 days and then was back again. This problem is the worse when I go to school, which is when it's about 45 degrees outside.
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When I accelerate from full stop with 3/4 throttle when car gets to 60-70 mph it stops accelerating for 1 or 2 sec, there is is also a little jerk. After that it continues to accelerate normally. The problem is not present if for instance we drive 30 mph and then use 3/4 or full throttle. I talked to dealer and they said there might be a little jerk but nothing more, and it might be solved by software update. In my opinion its definitely not a slightly jerk, car completely stops to accelerate for a moment. Car has about 45 k miles so its almost like new.
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What can cause a car to jerk forward while accelerating? Other symptoms include loss of HP and MPG. Recently had spark plugs and wires changed. Regular maintenance. I am about to see my mechanic and ask him to check the fuel pressure.
2002 Chevy Monte Carlo ss 100,000mi
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My 2007 Hyundai Accent Automatic has been, what I'd call jerking, off and on when I go to accelerate, either when speeding up to merge on to the interstate/coming out of a turn/or being very slow to accelerate after a stop, like at a red light. About a month ago, it wouldn't start after I filled it up with gas and the check engine light finally came on, so I took it a mechanic. They kept it for a day, got it duplicate the not starting problem, and said it was the "fuel gauge." (looking this up on the internet leaves me questing, because nothing about the definition of a fuel gauge sounds like anything that would cause it to do what it was doing, but they told me that's what the computer alerted as the code for what was wrong.)
It was working fine now when I fill it up with gas, but occasionally still jerks upon accelerating. I haven't looked at the gear gauge to see if it's not changing gears, as I thought at first it might be something misfiring, but I had the spark plugs changed probably a year ago or less. Just based on a quick internet search, I think it might have something to do with the fuel pump. I'd describe the jerking as just that, the car physically jerks until either the gear changes, or it gets power or something, and then once it does it it doesn't accelerate quickly after being at a complete stop, and the engine seems to get louder and while it does move, it seems like when I push the gas petal it has a hard time getting going.
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