Ford F-150 - 1997-2003 :: Truck Shakes When Accelerating Hard
Jul 5, 2010
Its not the tires/wheels. I just had them balanced. It only shakes when hard accelerating. If I am easy on it, then smooth as can be. It gets worse with the RPM of the engine. I am thinking its in the tranny.
It still shifts smooth and I have been pulling 17 mpg on the interstate with it. So I know its acting correctly? Could I have blown something in the trans or ballooned the torque converter?
It just started the other day, I drove about 350 miles on vacation and noticed it when I went to come home. Like i said it only shakes when you lay in to the throttle, and it gets kinda violent.
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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 1998 F150 4.6 2wd regular cab with 255,000 miles on it. Lately it has had some problems. The first is that it will run really rough when under a load, meaning when I step on the gas. It runs smooth at idle and at cruise but when I step on the accelerator it bogs way down and almost shuts off. I have changed the spark plugs, spark plug wires, coil packs and fuel filter. Now I'm thinking maybe fuel pump?
The other issue is that when the truck is having to work a little harder (i.e. pulling a trailer or running in the summer with the AC on) it will start to run hot. I have changed the thermostat, flushed the coolant, cleaned out the radiator, etc. and it still does it. Could both of my issues be related to a fuel problem??
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Sometimes the truck is hard to get started and to keep running, Once it warms up it will run fine. The next time it is started it will start fine but when you are going down the road if I try to accelerate it will start backfiring and not pick up any speed. I am getting a lean code on both banks. I have changed the IAC, the throttle position sensor and mass air flow sensor. 2002 F150 with 6 cyl
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2002 4.6L 75K Miles ... Truck has hard time starting if it sits for a few days. Recently had the fuel filter (under driver's door) replaced for first time, and mechanic said it was clogged (?). He also checked fuel pump pressure and said it was good (about 40 lbs). Truck starts OK if used every day. Battery seems OK, as starter turn engine fine. Seems that there's a fuel problem.
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My 2002 excursion 7.3 is acting weird when in drive. I have to get to around 2k rpm to get moving and hard shifts. But if I put it in 1st it has no problem but in 2nd i have hard vibration that shakes whole truck.
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I am first time ford owner of a 2003 ford f150 super crew fx4 with the 5.4 Triton and lately when I accelerate hard and it down shifts. It shifts excessively hard or when your going slow and the have to accelerate it also shifts really hard i dont know if it is the diff the U-joints or if its the transmission.
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I drive a 2003 Honda Accord and it shakes violently whenever I'm accelerating between 55 and 65 mph. If you put a shaker on the passenger seat, you'd have a martini. Approaching 55, it's fine, and then it shakes as I go up to 65 and then smooths out when I pass 65. If I am cruising, but not accelerating in between 55 and 65, it stops shaking, but once I hit the gas, it shakes.
The same phenomenon occurs in both third and fourth gears, so it doesn't appear to be related to what part of the power band the car is in. This model Accord had a recall on the engine mounts, which I had replaced at no small cost already.
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Truck seems to have a rough idle not bad I had kid in back seat and ran into store came out and he asked why my truck was shaking. Plugs been changed dunno anything else I could do.
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I've owned the truck for 8 months, did a fair bit of maintenance in the first two months (plugs, tranny fluid change, maf cleaned, o2s replaced), 320,000km runs very well, no codes.
When the truck is in gear and I put my foot on the brake after a second or so idling, the engine shakes. Releasing the brake, the shake stops, but it does it every time. Also, the belt or one of the pulleys will squeak a bit at the same time, but only idling with the brake on.
It doesn't seem like it is a serious problem, but what and why? My instincts are telling me it may be transmission related.
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Have an 01 f250 superduty with a 5.4 triton ... Plugs done 1500 miles ago along with boots just tested and put in 4 new coils.
I have developed a miss and i feel like I am parts chasing. The miss only shakes the cab when it goes to the lowest rpm for that gear. It is very subtle when it is in idle.
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2001 F150 4x4 harsh shaking. When driving at consistent speeds the truck begins to shutter and shake, begins as a light shake and becomes extremely harsh fast. This is not like a vibration that can be felt, but a really harsh shaking of the entire truck.
The truck continues to shake after taking foot off gas and braking. It will shake harshly even when braking and slowed down to 5mph, but instantly goes away once at a complete stop. Accelerate immediately after coming to a complete stop and it completely goes away and drives normal for a day.
Check Engine light has not come on. Tachometer stays consistent RPM. Shift into neutral does not stop shaking. Only coming to a complete stop ether in drive or neutral does the shaking stop. It happens driving at consistent speeds going 35mph & 65mph, etc. Any thoughts on what the issue could be?
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For over a year, the truck took 5-6 seconds of cranking to start, but always started. This morning it started, but shakes, coughs, and vibrates like hell. It revs up but still sounds like its hitting only on a few. replaced ciols many times over the years, but this sounds different.
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I had heard clunking when hard accelerating or hard stopping my 2003 Explorer, also heard it from Park to Reverse/Drive. I suspected u-joints, was correct, those were replaced.
After I received my car back I noticed the clunk was louder when hard accelerating or hard stopping; again from Park to Reverse/Drive. I suspected rear differential. I called my mechanic who said they noticed some play in the rear end - a little loose, that the noise would be noticeable...but that if it were him he wouldn't worry about it. He said the drive shaft was tight, that I wasn't in danger of it falling out, etc.
These are the only symptoms I have that something is wrong with the SUV. Just that clunk. If I come off slow from a stop and not hit the gas, there is no clunk. If I do not hard stop, again I can avoid the clunk. The vehicle does not vibrate or make noise on the freeway, shifts well between gears.
I was going to have my mechanic open the rear end up and see what needed to be replaced when the cold weather brakes. In the meantime, is there anything I need to be keeping an eye on, or something else I should check? My mechanic said the checked it over and couldn't find any other problems. I just want to be prepared for expenses.
It's a 2W, not 4WD. I had all the fluids done, a drain and refill on rear. Not sure if that's important to know or not.
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Like the title says my truck has been stalling while driving. Accelerating or cruising it dies for a second, two at the most, and then just keeps chugging along again.
I thought i'd fixed the problem last year when I did injector O-rings and 50 cented my UVCH. It hadn't done it since, until two days ago. Started out with a two good solid stalls while gently accelerating up hill. I had thought maybe my fuel pickup foot had finely given up the ghost because I was below a quarter tank. But I filled her up full, and then she did it again about 50 miles of driving later.
I didn't catch the first four stalls on my torque app, because I'd just recently decided to stop logging every trip, with the thinking that it had been half a year problem free, why keep logging waiting for something that isn't going to happen. I did catch the 5th stall on the torque log. But I'm having trouble trying to figure out where it happened in a 30 min log.
First question where would yall start in tracking this thing down? Next what data actually should be logged? I think I've got some extra stuff in my logs that isn't necessary, and is maybe bogging down the system. I get one data point per second resolution on my logs. Are there ways to improve the resolution, will getting rid of some PIDs work?
Lastly I need to attack this thing smartly, without throwing time and money at unneeded parts. I had surgery and I've been out of work for 3 months and I'm looking at another 6 before I'm making money again, and there is no unemployment for the self employed. Also I only get 3-4 light weight upright hours a day to work, exceed that and I'm back on the couch battling swelling for a week.
Also is there anything I can do while driving to "flag" the stalls so I can find them more easily in the logs?
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Ive got a 2000 4x4 F-150 with a 4.6 and a 4r70w. The transmission and transfercase were replaced by the P.O aprox 2,000 miles before i bought it..
i was driving it today, and while accelerating it missed a shift into 3rd, then nothing no forward or reverse, i sat and messed with the gears for a while then suddenly it shifted into 1st now it drives with a slight resistance, revs up to about 3K before shifting and shifts HARD up and down, and i cannot get over 40 mph its at about 2800 rpms and feels like im hitting a rev limiter wont shift again and wont accelerate anymore..
When at that speed I hit the OD off and it downshifts so i think i still have od?
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2002 F-150 4.2L. About a year ago, it threw the P0171 and 0174 codes up. After replacing all the simple stuff, I bit the bullet and replaced the lower intake gasket as well as the upper intake gaskets. Buttoned it all up, reset the codes and we were back in business. No issues, truck ran good. About 6-8 months later, the check engine light came back on, I check it and it was that pesky set of codes again, 0171 and 0174.
It still ran fine, but the codes were there, so I just drove it for a while (it's a company truck that doesn't get driven that much).
A couple of weeks ago while driving it, it acted very sluggish. You could mash the accelerator and it would just very slowly run up the speed. It never hesitated or missed, it just got very very sluggish. Checked the codes, no additional codes.
Then it began to stumble when you mashed the gas.
I put new plugs (old one's looked great, other than a huge gap), new wires, new coil pack and started it. Pushed the gas pedal, it just dies.
I look for obvious vacuum leaks and replace a couple of elbows for the PCV and it seems to run a little better. Enough so that I can drive it, but still not running right.
I ordered all the intake gaskets and new isolator bolts and spend Saturday pulling that apart. I didn't do the lower intake because the upper intake gaskets looked so good, I just don't believe this is a intake gasket problem. None the less, I installed the new gaskets on the plenum and upper intake, new isolator bolts, replaced a couple pieces of vacuum hose that looked cracked, started it back up, it ran as smooth as silk.
Convinced I had it fixed, I went for a test drive. Idling, it is as smooth as you could ask for. Pull up to a stop sign, wait, step on the gas and it chokes. Just stumbles and you can hear it almost backfiring and pushing air back through the system.
I've put new PCV, new EGR, new vacuum lines in several places, new upper intake gaskets, new plenum gaskets, new isolator bolts, and even new o-rings on the injectors, and I'm still getting the 0171 and 0174 codes.
With the diagnostics on, I can see voltage varying on all O2 sensors, so I assume they are working (none of them are reading 0 volts). It doesn't throw any other code up, other than the 0171 and 0174.
At this point I feel like I'm replaced every single thing ever mentioned in any 0171 and 0174 thread on the internet. Where to go next? 1 more point, if you very slowly push the gas, it runs fine, but any pressure on it, it bogs down and just stumbles.
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Recently, my truck has started rolling back from a stop when accelerating. There seems to be a hesitation between when I depress the throttle and the transmission engaging. It doesn't clunk, just delays. Been doing it for a few weeks, but is now getting worse. Today, the symptoms are similar but more pronounced. When driving there doesn't seem to be an issue, just moving out from a stop.
Checked the fluid idling in park, level was good, fluid looks great, was changed by a shop 6 months ago. Is my 319,000km trans on its way out?
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My trucks been doing something weird. When accelerating around 45-55 mph, a couple seconds after it shifts to 3rd, it does a weird type off shake/shudder. Feels like I hit a small bump in the road. Also when coming out of a cruise to accelerate, it will Make a very violent clunk and then speed up. I'm thinking it's a problem with my torque converter but my mechanic says transmission and my buddy says rear end lol. I dropped the pan and there was some shavings but nothing huge and it was the first time it was ever dropped. After 90k miles.
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So I have an issue with my 03 f150, Basically It clunks in various scenarios such as Accelerating also occurs take off and general breaking/slowing down but not really when stopping. December when it was cold and I was decelerating (not on the break just coasting) it feels like i was driving on the shoulder.
It does it much more in cold weather. Just had the truck out getting a little rough with it for 5 or so hours today and 0 issues with it.
I was thinking it was a slip yoke issue that I hear allot of trucks have the issue but I was at the dealership today and both guys and a mechanic sitting there were like "never had that issue on an 03 f150, might be your back end." They also stated the clunking would always occur and be more prominent when breaking which its not.
I am certain its not the transmission its not occurring with any shift point. Kind of hard to do it if its hard to reproduce in the heat.
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Noticed the other day when I was driving on the highway my truck started humming when I was accelerating past 30. From a dead stop to 30 its fine, but after it starts humming. Its only when I have my foot on the pedal. When I let off, it stops. The sound is coming from the rear/under.
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