When I start it and accelerate, it feels heavy as if it was choking. Then it picks up speed slowly. Anybody knows what it could be?

Truck drives fine until I get speed up, let it slow down a little, the try to get back to previous speed. It starts running rough, clunking sound, really scary. Help! What can/should I do?

Cannot get truck to accelerate smoothly. When I apply throttle it hesitates and stumbles. I tested mass air flow harness and I get 6.1 volts at PCM wire.

While driving at any speeds my truck shutters and jerks and also when I give it gas it jerks even harder sometimes. The shutter and jerking comes and goes but lately it seems to be getting worse.

Seems To Skip But Feels Like A Shudder Have Replaced Plugs , #1 coil fuel filter trans And differentel speed sensors gas cap had a p0500 code and emission code

My vehicle jerks when I drive over 40 mph. The fuel pump and spark plugs have been changed and for a week the problem disappeared, but it has not started jerking again. What can it be?

It has no power like something is holding it back or chocking it down I let off the gas and it smoothes out just a little bit , push gas and it does it again. Gas mileage is very , very bad.

Truck hesitates when turning acts like it wants to stall - on board computer says gas and break applied 29 times and driver is driving double footed - I do not drive double footed and now afraid of truck. I am a female and being dismissed wish had never bought a ford!

So I was trying to back my truck up over a curb and didn't force it too bad...I had the wheels turn and turned 4x4 on when I try to take off now it hesitates to takes off and the speedometer went out...also when I truck left and right it' sounds like rubbing and vibration everything was fine until I decided to go over that curb.

98 f150 4.2 v6 5 speed. Will start and run as long as i stay on the throttle. If i let off the throttle while the truck is not moving or clutch is depressed, it dies. Sometimes when i go to accelerate, or at partial throttle, it and feels like it's being choked but when i get on the throttle or I'm completely off the throttle, it runs just fine. I replaced egr and cleaned the tube as best i could but wasn't able to clean the entire tube. After doing this the truck cranked and started to idle like it supposed to, but soon as i started driving, the problem persisted again. I cleaned the IAC and… Read complete

Wipers are making noise in motor/linkage area and wipers are slightly jerky. I as wondering if anyone has had this problem and what might be causing it and how to fix it.

Thanks, Redwood

I recently changed the oil, filter, valve cover gaskets, spark plugs, wires and fuel filter. I filled it with gas and it started to shudder and pull to the right, hard. There is no visible signs of bushings or control arms damaged. I am leaking fluid
Under it, running on the transmission lines, what should I be looking for next? I'm going to change the transmission fluid, filter and gasket, what else should I look for?

On the freeway uphill grade truck begins shuttering on acceleration I noted it at around 80 miles an hour power loss and had to back down off the throttle and reduce speed?

2006 ford fx4 shudder in rear end on take of it only seems to be sometimes

Has power with overdrive off but hesitates and Boggs down when going up hill with overdrive on and acts sluggish when cruising at low speeds with overdrive on. When you step on the gas halfway to the floor or more it Boggs way down before accelerating. I have replaced all 8 coils all 8 spark plugs fuel filter both evap valves and the fuel pump control module and cleaned the mass airflow sensor and dumped fuel system cleaner in the tank.

This light came on then my truck started driving really rough. It would sort of "jerk" forward when I took my foot off the peddle. Drove it 2 hours home like this but since then it as been fine (only been 4 days). Wondering whats wrong, read online that its probably the throttle body.

It started with jerks while driving; when starting gold y vibrates and then it normalizes. While driving it losed power as if choking a little, but now it got worse. It chokes while accelerating and sounds as if exploding, when I let go it keeps driving; if I accelerate again it does the same but it doesn't stall. If I turn it off for 5 seconds it works for 10 minutes and then it fails again. I alreadi cleaned the injectors, changed spark plugs, air filter, fuel filter, fuel pump, coils and their sensors. I've already had this problem for a year and they can't solve it, yesterday I scanned it and had air sensor error, but changing it didn't fix it.

It was working fine and the next day I used it I felt the truck heavy, it didn't have the normal acceleration, and then I realized it didn't have the power to go uphill, it went sluggishly and when the revolutions go up it started shuddering. With the scanner it showed errors P0755, P1747 and P0743, I was told it might be the gas pump, but the failure continues. It's a 2008 mexican Ford truck, 8 cilinders and 4.6L engine with automatic transmission.

My vehicle jerks and stalls while driving, usually when I speed it up. I've already chan the gas filter, the catalytic converter, the gas regulator, spark plugs, wiring and coils. Even though the jerking problem is not as worse as it used to be, the car still stalls. Can anyone help me please?

When I drive at more than 55 mph it starts jerking and if I accelerate or step on the gas to overtake somebody it fails... Sometimes it takes a while to start doing this, but obviously it's not reliable if it happens every once in a while.

The waste gate flucuates open/closed on steady freeway driving. Whilst on the onramp a sudden acceleration not expected. Vehicle would not slow when go pedal was lifted. Enfgine shuddering, flucuation in tach at idle. Goes fron 500 th 1200 RPM just sitting. Powertrain warning wrench on the dash at shutdown. C

I had my tranny replaced would only start up let it run for 1/2 hr or take cans down it starts no ticking or sounds from motor. Had to move a truck in my yard about 10 feet i got stuck in mud 4x4 fuse was blown i replaced it worked i pulled into parking spot put in park to let it run after 10 min it made 3 knock sound of a metal bat hitting a flag pole then i could hear engin like idle down and made a sound of trying to start and hood lite got bright it jerked the truck it's almost like my starter was hitting flexplate ! !!! Help please

My truck will not run unless you are given it gas. And while driving Down the road it makes a load humming sound when you give it gas. As soon as you slow down it turns off if you don't keep pushing the gas. It jerks when you get to around 50 MPH

When I shift from first to second gear it hesitates and grabs and then when shipped into reverse it does the same thing

I took my k&n air filter out and cleaned it with soap and water and only let it dry about 5 hours I used the dryer to try to dry it out and then when I put it back in and drove my truck it started driving crazy and the OD light started flashing and it said transmission fault and when I would push the gas it would hesitate the next day when I got in it no OD light was flashing no transmission fault code but when my truck got to run in temperature it will start kind of hesitating and it's been doing that ever since it runs fine when I first start it but no more light and no more transmission fault on the gauge it's not saying that anymore it's just when it gets to running temperature it starts running rough and it's gradually getting worse and worse I don't know what it could be

Driving normal speed and truck shuddered and wrench light came on dash. Had to idle it back to home. Miss fire now and then

I own an Huna f150 2007 and when I accelerate it to a 45-50 miles ratio it jerks as if it were the transmission. I've already changed the transmission's filter and oil. Nothing shows up in the dashboard, any ideas? I would appreciate your help.