daisymae2
 

Can anyone help me with a problem that I am having with my old "Betsey" my 1986 ford f150 302 5.0 truck?
My old motor died and I had my mechanic put another engine in the truck and it starts and runs really good.except when I let up on the gas to slow down and it starts bucking like a horse and sometimes it cuts off on me completely.
My mechanic replaced the computer and tsp control as well as plugs and wires ,plus a new alternater and all new belts,etc(if this keeps up I will be sleeping in old Betsey!!!
I was driving the truck yesterday with a half of tank of gas and while I was driving the gas gauge started to go to empty and then slowly came back up to a half tank.
All of the other gauges are on normal and like i said it runs really good at 55 or 60 mph.
Thanks for your help,
daisymae:-huh

You need to post your question in the 1980 to 1986 forum. I think you need to give more detailed info for someone to figure out your problem. It sounds like your fuel regulator could be bad but I'm just guessing.

daisymae2
 

Thanks !!!:-headbang