Ford F-150 - 1997-2003 :: Transmission Hesitating While Accelerating?
Jun 15, 2013
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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I just bought a 98 f150 about a month ago from someone. The guy i bought it from said the tranny had been rebuilt about 4 months prior and i have the invoice proving it. I have lately noticed a hard shift from first to second gear, all other gears shift perfectly, but on my way from work toady the tranny seemed to slightly slip out of gear(in other words the rpms didn't shoot up, just loss of power) when accelerating from a stop light, and then it seemed to catch and started shifting ok. my question is given these symptoms is it possible that i can make this tranny last a little while longer or is it about to quit? any possible causes?
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My 2001 F-150 4.6L was hesitating around 1500 RPM and the check engine light was on, dealer said the oxygen sensors needed to be cleaned. Had the work done and the problem still exists, the check engine light intermittently came on. I tried 89 octane fuel and the check engine light is off and the engine runs smoothly. I'm just a weekend mechanic and can do mostly basic stuff but the only time I've come across something like this is when I accidentally put 87 octane in my bike.
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2001 F150 4.6. Just replaced all 4 oxygen sensors and spark plugs. Replaced rubber grommet on brake booster as it was leaking vacuum.
Truck is still running rough hesitating.
Pulled codes came up as PO141 oxygen sensor heater circuit. PO171 passenger side cylinders running lean. Fuel trim outside limits.
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I replaced the water pump, power steering pressure hose and pump, and fuel filter. I degreased the engine at a car wash and rinsed with the power hose. Now when I drive it chugs/hesitating from stop to accelerate. I took it to a shop who hooked it up to the machine MAF & map sensors working correctly but the computer is not controlling them. What can I do?
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My 2008 Honda Fit has been developing a problem for the last 6 months or so and each time I've taken it to the dealership they say there's nothing wrong. It started with the car hesitating when accelerating from a stop. This only happened if the car had been sitting for a while and it only really happened if you hit a full stop before the car had a chance to warm up, even then, it probably only happened maybe 1 out of every 10 stops.
Recently, the car has started struggling when coming to a full stop (again usually the first stop after the car has been sitting) and the car will stall out unless you give it some gas. This seems to be worse if it is cold outside (which it is now permanently cold outside) and when the car is on an incline (front higher than the back).
I took it to the dealership (because it is still under warranty) and they said the engine isn't showing any codes and the fuel pressure is fine (of course that didn't stop them from trying to sell me a new battery). However, I am concerned that this is only going to get worse and its not really acceptable for it to be stalling out regardless.
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My daughter's 2004 Camry V6 has been hesitating when starting from a stationary position or when accelerating after slowing down. Dealer has been having hard time identifying cause but thinks it is an oxygen sensor. Had one sensor replaced last fall when light came on. Tech Rep says there are four sensors. At least one is bad but the other two sensors may also be bad. Is there really four oxygen sensors in the 2004 Camry? Would this cause the hesitation when accelerating?
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At least that's when I notice it,... right in that range, seems the car hesitates and then starts up again and hesitates,... and you can see the tachometer go up to around 2 k and then down to 1600 rpm,.. but I am not accelerating with the gas peddle. Thoughts on what is causing this..
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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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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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Just purchased a 2001 Ford F150 super crew lariat v8 4.6/5.4 2v OAD at 156k miles, iv had no problems with it until I drove over the pass and after 2hours of driving my truck started to jerk when I accelerate between about 40-60mph. I don't experience any other problems over 60 it runs smoothly and in town under 40 it also runs smoothly, no check engine light. The next day is still continues to make a jerking motion, which feels like from the rear.
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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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I have had my truck in the local ford shop because the fluid was a little bit burnt smelling, I had a flush done to it and then afterwards I noticed first gear started hesistating and then would go to second, when it warm it doesn't have any issues, shifts normal, but when cold or starting off even with running in the morning before going to work its still does that, I would like to find out before it starts becoming a serious problem....
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My 1990 Chevy Silverado with 5.0 liter, 45k miles has started a problem that the guys in my diesel repair shop don't know what to do. Last week it started to run rough, hesitating and lurching and not accelerating smoothly. It idles fine, or pretty well, but just doesn't run smoothly with any kind of acceleration. I drive it back and forth to work just 1.5 miles during the week. I took it on vacation a week before, so it's not from lack of long trips, it ran fine.
A guy at my diesel repair shop put it on his Genesis scope and all it would code is the O2 sensor showed lean, but we could see it switching from rich to lean and so on. I thought vacuum leak, but couldn't find one. PCV valve is good. EGR valve is ok. I changed the fuel filter yesterday and thought it ran a little better, but now has gone back to the rough running. What I can do myself to diagnose this? I do have all the tools and shop.
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What can cause shutter in 1998 f-150 4.6 4x4 4r70w when slowly accelerating?
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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 2002 4.2L F150 w/ Manual Transmission. The problem I have started about a week ago. I noticed it started to idle very rough and at times felt like it would almost stall if i didn't keep giving it some gas. Then a few days later it started to jerk/and buck intermittently while accelerating. I changed out the plugs and wires. My coil pack was replaced a year ago but was still under warranty so i installed a new one just in case. I cleaned and inspected the EGR valve and replaced the TPS. The rough idling seems to have cleared up but the jerking/and bucking still remains.
When the engine is cold the truck runs fine, and then as the engine starts to warm up it will jerk and buck while accelerating at any speed. Once the engine has reached its optimal temperature the jerking/bucking goes away and it runs smooth as silk. I can drive it for for a few hours with no issues whatsoever. As soon as the engine cools, the cycle starts all over again. I figured maybe the intake gaskets were on their last legs and when they heat up they seal tighter causing the engine to smooth out.
So I replaced the upper and lower plenum gaskets today and cleaned everything up. It still did not fix the problem.
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