1991 Ford F-150 Questions

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The heater works but the cab fill up with steam.
the truck will run great for about 4 or 5 miles on the interstate and then it will start backfireing and will only run about 25 mph. were I live is on the entrance to the interstate and the next exit is about 8 miles....
at first it would drop below the zero and the engine would bog, and then it would fluctuate and the engine would be fine. but now I cant figure out why it wont stay on. its either on the zero line or below it. ive ...
When it shuts off its sudden not like it's not getting fuel I can here fuel pumps when starting and when it shuts off does the same thing no matter what tank u use to start the truck what are some things I could check...
It runs fine when the vehicle first starts up. After you drive it a little it starts to jerk and lose power at the same time. I can pull over and put the truck back in park. Then put it back in drive and it will go ro...
or in outher words as STANDING FACEING THE TRUCK CLOCKWISE OR COUNTER CLOCKWISE
The front hubs were converted to part time 4x4. They now need new bearings.
have changed spark plugs, fuel regulator changed rotor and cap distributor
I got the truck about a week ago. I had to change the coil to get it home. When i was driving it the check engine light came on. I parked it in the garage and now i have no power to the coil. It will turn over but wil...
i put new plugs&wires changed the, TPS,and changed the o2 sensor, and replaced idel air control.
when we start it up sometimes it will start good.. then some days it will start and the starter stays kicked in it wont kick out. when it wont kick out we have to pull the battery cable off and hit the cetonoid on ...
had a customer come in the other day and he bought a truck if he turns the head lights on he can start the vehicle and run it. but if he shuts the lights off it dies. he took and rewired lights and everything accordin...