Hello everyone and thanks in advance for any help you can provide for my problem. I have a 92 F150 Nite with a 351, everytime that I put the vehicle in drive and let off the brake the engine "lopes" and wants to die if I don't hit the gas right away. I also does this when I'm at a stop light and let off the brake.

I have replaced the plugs, wires, idle sensor, PVC valve and check the timing. There are no lights on and it shows no codes when it was checked at Autozone, my friend says he thinks it is the transmission. I'm no mechanic but I don't believe that is the problem. I'm about to replace the fuel filter but I doubt that is the problem either.

Any help would be greatly appreciated.

 

you could have a bad cat. converter.
does it buck when you are driving it

 

No bucking

 

i think its the cat i had a similar problem with my friends cougar the cat. fell apart and was blocking the exhaust

 

Cut off the cat and it still dosen't fix the problem, I should also add that when I'm going down the highway it "spudders". Took the boat to the lake today and it also acted like it didn't want to pull it out of the water, I guess I need to just take the thing to the shop and have them fix it.

Anyway thanks for your input.

 

idle control may be bad try tapping on it.