Ford :: Truck Accelerates When In Gear
Jan 28, 2012
My old truck's engine starts accelerating when I put it into gear. This is a 1973 Ford F-100, 3 on the column. I just had it in for work (had let it sit for a long time and had noticed a gas leak at the carb so I had it hauled in). The mechanic cleaned the carb (carb kit), fixed the leaks, changed fuel filters, plugs, wires. It seemed okay when I picked it up.
The next time I drove it, it started fine, idled fine, but when I put it into gear the engine began accelerating on its own. As I was driving it would do that intermittently and I had to keep kicking the gas pedal to get it to let off. The engine had done that once before when idling before I found the gas leak and before I took it to the mechanic. What is sticking or why?
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I purchased a 2011 F150 XLT 4X4 Super Crew in early January, since then I have had it into the dealership many times to correct an annoying shudder that can be seen (looking at the steering wheel) and felt as the truck accelerates. The shudder happens around 5 kph or 3 mph and then quickly disappears as you accelerate.
This is extremely annoying in stop and go traffic and is more readily felt if driving up hill. The dealer tried shims in the differential, Installed a new rear drive shaft, U joints and the last attempt was a complete rear end all to no avail.
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I have a 98 Ranger 4x4 XLT 4.0 5sp. It has 182K miles.
Once in a while it will blow the fuel pump fuse. It'll go 2 years sometimes. And sometimes the engine will stall just for a second making the truck "buck" as it accelerates.
Could it be the pump is about to fail? How long do they normally last? Btw, I change my fuel filter every 2 years, no issue there.
I've owned the truck since new and maintenance is always taken care of. Also, What's the best way to change the pump?
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When the vehicle is started and shifted to drive or reverse, the RPM increases and you have to hold the brake so it won't take off. The idle speed is normal in neutral or park. No codes. The Accelerator Pedal Position (APP) sensor voltages are normal with the pedal released. the TPS voltage incress one volt when put in to drive or revers. Have checked the ECM grounds they are ok. .....
2006 sonata LX 3.3L 174,000 miles
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Toyota Camry 2000 , 195,000 miles
Last couple of months or so, my vehicle would intermittently stop accelerating, especially when climbing hills. A couple of days ago, the vehicle is completely unresponsive when pressing down on the gas. The vehicle revs, but won't go forward. It will only go in reverse. Everything else is working in the vehicle.
I went ahead and put about a half quart of transmission fluid. Still nothing.
Other information: the vehicle has been leaking engine oil and transmission fluid for the last several months.
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I have recently purchased a 1999 F150 with a v-6, standard transmission (5 speed). Previous owner said he had just replaced the clutch. Here is the problem, after the truck has been running a while and after stopping the truck will not shift into gear. It does not grind or make any noise, it just won't go into any gear. The only solution is to shut the engine off, place it in gear and restart the engine. During normal travel the transmission shifts up and down without any problems. The clutch does have a slave cylinder.
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I have a 2005 ford expedition with 91000 miles, it has the 5.4 w/ the 4r70w transmission.
For some reason when my truck tries to shift into 4th gear, the RPM's climb to approx. 3000 rpms (meanwhile the truck is not gaining speed) and slowly drops down to about 1000-1500. once the rpms drop down fourth gear eventually engages and I can go about my business as normal as long as I do not let my mph drop too low.
If I turn O/D off, the truck drives perfect, minus not having overdrive.
If I come to a dead stop and put the truck in 2nd gear, with O/D on the truck drives great and it has good engine braking so I am assuming that the band is holding.
I took it to a transmission shop to have some diagnostic checks done, they told me that fourth gear was barely engaging and that they would have to tear apart the transmission to diagnose it further, I told them not to disassemble the transmission.
So I changed out the torque converter (which I assumed was "fourth gear") and changed out all the fluid, the fluid looked a little burnt but there was no debris in the pan but there was some silver material on the tranny pan magnet, and installed a new filter. and the problem still exists.
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My ranger has a 3.0 v6 engine it idles high and accelerates on its own sometimes. Sometimes its more often then others. I turn my key about three times thinkin its reseting the computer and stop it and it does. But I keep hitting a dead end and don't know what to do about it.
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It has a floor shifter for the xfer case with 2wd, 4wd-H,and 4wd-L, and Neutral positions. It works fine in the 2wd and the 4wd-H positions. The problem is it sometimes slips out of 4wd-L position into 4wd-Neutral, which I have just lived with, but it is annoying. I think I heard this is a known problem with these 1970's Ford xfer cases, and the fix involves removing the xfer case and replacing a part.
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They are about my F250. It is a 92 with 186000 miles. I love this truck.
After a long trip, maybe 1.5 hours, the truck will shudder while I let out the clutch in first gear. This only occurs in first, and it doesn't happen after the truck sits for a bit, just after driving.
I have an opportunity for a good deal on a F150. It is a 2001 with 181,000 miles for $4000. Is it worth updating for the new technology even if there is the same old high mileage issue?
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My 2012 F150 has developed an odd issue.... It doesn't seem to want to always take off in first gear. I've had it happen several times where the truck would take off in a high gear but yesterday was the worst yet....I was towing my boat and the truck attempted to take off in 5th gear....I threw it in neutral and back in drive and it was fine, what's causing it.
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So on my way home from work, there is a dual lane, pretty long steady incline (fairly steep). The speed limit is 50, so I set my cruise to 50 going up. I noticed that the truck will not downshift but stay in 6th gear all the way up at around 1,200 rpm. It seemed a little low on the rpm's for how steep the hill is, so one day (about a week ago) I decided to use the "-" button of the select trans switch to make it go into 5th. RPM's go to ~ 2,000, and I immediately saw an increase in the green bar indicating the instant fuel mileage. I've repeated it every day since with the same result. So I get better mpg's manually shifting into 5th gear in that specific situation.
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I have a 2001 m5r2 ford f-150 standard transmission. i have replaced the slave cyl., the entire clutch assy., the master cyl. pilot bearing. the trans. will engage all five gears plus reverse while truck is off but will not engage a gear while running. i have bled and bled and bled and still will not engage.
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I have a 07 f150 getting 17 mpg in town, I would like to get 20 MPG in town, this is a 5 speed, i do not shift into 5th gear. Max in town in 40 MPH. I have 3.55... I was wondering would 3.27 getting me to that 20 MPG?
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I had what I was told was the breather (on the drivers side valve cover) snap off. I was able to place a piece of tubing In it and reconnect it. I had to change the #7 cylinder spark plug wire. Got a misfire code and found the wire was loose and corroded. Replaced wire and PVC valve.
My problem is, it seems not to be idling as fast as it was before this happened. The truck stalls out now in gear but not in park. 1997 F150 4.6 ....
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I have a 2001 f250 7.3L. I bought it with 192,000 miles and have driven it to 206,000 in the last 6 months. When I put it in gear, the truck will "bog" down and sometimes die. I will have to refill the transmission fluid every 2 weeks but I can't find where it's leaking.
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I have a 2010 Mountaineer Premier AWD V8 47k miles. On acceleration there is a hum/vibration in the steering wheel and the gas pedal between 30-50 mph. This is my third Mountaineer and I have never noticed it on the others, I just got this one about 2 months ago. The others were V6 models but were AWD. When I turn the 4x4 to the lock mode there are various noises/vibrations coming from the front of the car while it accelerates and also when turning.
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I have a 1997 F350 5.8 2wd dually with 110,000 miles. Lately the automatic transmission has been acting funny. If I'm cruising along, sometimes the drive gear isn't there. The engine accelerates, but the transmission doesn't respond. If I downshift, I have the lower gears. Sometimes, if I shift into 2nd and then back into drive, it's fine.
Other times when this occurs is when I'm cruising along in Drive and hit a bump, I suddenly get nothing and have to downshift. Sometimes drive gear will re-engage if I stop and put the transmission in park and then into drive.
Today, I was at a hardware store and when I came back out, my truck had moved about 10ft. The Transmission was in park and the truck was on a flat surface. The parking lot had a slight drain slope to it, but nothing steep at all. The gear selector still indicated Park, but when I turned the key, I had nothing. I bumped the shift lever up further and the truck started.
Just wondering if my transmission is slipping or if its a linkage problem. Any clues?
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Replaced the 2002 ford explorer 4x4 traction control module because of a shudder in first gear. With the new module the shudder disappeared but now the truck shifts into 4wd by itself and stays there. I am now on my 2nd new module because I returned the first one thinking it was defective.
If I cycle the 4x4 high switch and the 4x4 auto switch, the truck switches back int 2wd but on for a moment then goes back into 4wd. I don't get a 4x4high indicator light but I can hear and feel it is in 4wd. Almost like it thinks the truck needs work with the traction. I have now disconnected the module completely and the trucks runs/shifts beautifully in 2wd. I know my transmission is good. BTW, I have no trouble codes.
Do I have a bad speed sensor somewhere? and How do I trouble shoot for it?
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My 2012 f250 is been acting weird, usually the truck is boosting while on gear when I'm at a stop (around 0.40) I think that's normal on a 6.7 because it's always done it, but since yesterday I noticed it sounds different and it's not on boost anymore it just vacuums while on gear at a stop (around -0.25) I'm thinking it's the wastegate solenoid but I'm not 100% sure, and the truck doesn't boost as fast as before but it drives fine and I'm actually getting better gas mileage since it doesn't boost as before, what it could be? It's tuned and deleted....
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My 2004 expedition wont go into any gear the shifter will not move I changed the stop light brake switch and a 30 amp buss fuse I found blown and also the check engine light is on now too this was after I parked it I also changed a 30 amp buss fuse I found blown out but it still don't work the only way I can get it into gear is to push the little button under steering wheel...
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