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?

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.

Occasionally slips out of overdrive causing tach to read several hundred rpms higher and “off” light on end of shifter blinks.

I can start my truck and it will idle fine in park or neutral
As soon as i put a load on it will start getting rough and stall out
In park it will idle for a bit till it gets warm then does the same as in drive
When i step on gas it will sometimes get the rpms to move but when i let off the gas the
Rpm stay up for a couple seconds then go down and stall
On diagnostics it will say im not getting a reading from crank phase sensor bank 2
Replaced sensor 3 times and still same thing

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.

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.

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?

Got gas and then the problems started. Changed out 5 coil packs, all new plugs. New purge control valve. New fuel pump. Checked fuses and relay. Truck will start, rev up and then die. I hear a clicking sound near the kick panel fuse box just before it dies. Snap-On scanner is showing Code B10F1

Idels to high after its warm up...however you can hear it try to idle down but it will not...any help please...

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 truck starts normally, but as I'm accelerating it starts failing, the more I accelerate the more it fails, it loses power, the check enging light and a wrench indicator light come on, and while driving uphill it overheats. Please help me!

The wrench symbol came on and the truck lost power and the a. C. Quit at the same time could this be a fuse issue

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.

Replaced fuel pump but still get signs. It's a fuel pump. Think it's fuses. Loses power, Dogg's out, acts like transmission out, I have to manually change gears for it to try and go, backfires under hood also during all this. Then after a spell it runs fine. Unless gas is gone. Then it's hard to start have to add are lease half tank bang on it and constantly spray starting fluid with pedale to medal then after three cans starts. Does this Only when a quarter to none of gas in the tank left though. They say catalyst converter are clogged up is why ts doing that.

The Climate control loses power sometimes the lights flicker on and off. It worked 4 days straight and the next day no power. I checked the fuse and it's fine. Any other fuses that may control the power to the climate control. Does the ECM have any control of the climate control module?

When the truck goes over 4000 rpm the check engine light flickers for about 20 seconds, and at that point the truck loses acceleration and then it goes back to normal. The error codes I have are P0300, P0302 and P0306. Thanks for your help!

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?

My truck wants to stall at low speeds. When I put the truck in neutral then Rev up the engine and pit it in drive it runs fine until I slow down again then it does the same thing. The garage changed the cam sensors but that didn't correct the problem. They suggest increasing the velocity of engine oil and or putting synthetic in to increase the oil pressure. Any thoughts?

Regards,
Ian

I can put truck in reverse it goes in gear but will only Rev up and won't move same thing when it's in 1st gear

So please and thank u to anyone that can help me and or give me some tips on what to do it would vary appriated

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.

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

2009 ford f150 lariat 4x4 5.4 3v

First start after sitting overnight. Rpms go up the down right away to about 300 then back up to about 900. Put truck in reverse and truck stalls out. This does not occur every time. Does the same when I put in drive

If I push the gas too much feels like it wants to bog out if I don't gas it as much seems fine ??

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 when in gear stopped it shakes and vibrates really bad and wants to die it also will only shift gears at really high RPMs

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

It starts normally and after a while the revolutions go up and down until it stabilizes again. Like 20 minutes afterwards it starts doing the same until it shuts off. The throttle body was cleaned, the spark plugs and cables were changed, but it does the same until shutting off.

The truck will Rev really high but won't catch speed got home today and seen smoke coming right out of the front of the transmission

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!

The truck has the check engine light on, but when I start it and accelerate it I get a wrench warning light and it starts failing and loses power, and the AC stops working. I had that problem before and using a carburetor cleaning product on the admission fixed it for a long time, but now it happened again and I can't fix it.

Says power limit at throttle body

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

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.

So I have a Ford F-150 and I have literally replaced both camshaft position sensors the crankshaft position sensor I have also replaced the fuel pump driver module I've replaced all the spark plugs all the coil packs and for some reason it's still bogs down when I come to a stop it will bog down and start to sound like a diesel does anybody have any suggestions