1998 f 150 4x4 4.6 motor won't run over 40 mph. No check engine light.Check TPS checks ok.When you back off gas then push gas runs good up to 40 mph and will not run over 40 mph.

1998 f 150 4x4 4.6 motor won't run over 40 mph. No check engine light.Check TPS checks ok.When you back off gas then push gas runs good up to 40 mph and will not run over 40 mph. 2 Answers

If my 82 ford f-150 turns over and runs. But it acts like its not getting gas into the engine fast enough. Ok I'm driving down the rode. I'm pushing the gas pedal and the mph says 45 but the truck is only moving like 20-30 mph. Would that mean there is something wrong with the carburetor ? 1 Answer

I want to see if that's all I need to buy to fix my truck.

i have 91 F 150 4.9 ENGINE . It will crank and run fine then just goes dead . If i switch tanks it will crank back up and run fine , then you drive for a while and it goes dead again . 1 Answer

if i'm running the front tank it runs fine for a while , then dies . i switch to the rear tank , it runs fine for a while then dies . i switch back to the front tank and it cranks back up and runs fin...

I have a 200l ford f -150 supercrew engine 5.4 V8 4X4 my truck will turn over but not start I can spray starting fluid and it will run as I sprayed starting fluid in it while my son turned it over and it would start as long as you used starting fluid at the same time turn the key as starting and it would start as long as we sprayed and kept the key to the starting position but after we let off the key it would die and the pressure would be at 40 pounds as we stopped spraying and turning the motor over just sitting and the gas pressure went down to nothing and we just put a new fuel pump and fuel filter 1 Answer

I have a 1995 f150 4x4 with a 5.0 302. It also has a manual transmission. The truck has no power shifting through gears. I can barely get it over 40 mph. 2 Answers

Going up any kind of hill the truck loses all power. There is also like a back popping in the engine while driving. No smoke. Also after driving oil pressure gage drops to zero