My check engine light never came on. I was quite honestly fed up with my truck and resigned to the fact that the motor would never have any power. Then I stopped trying to be cheap and bought a code reader. Best money ever spent. The key on/engine off told me the map sensor was bad so I replaced it. The key on/engine running test told me my O2 sensor was bad. I haven't changed that yet.
88 F-150 302
Just your basic old truck!
And I to love my 1992 Ford F250 5.8L that's rated at OVER 8600 lbs. I too have been having this problem which I believe I have narrowed down to the TPS. My question is: Will I have to reset the TPS if I remove it and replace it with a new one. Also, can this problem be caused by a bad MAP Sensor? I am at wits end! I have probably put several thousand dollars into the engine because of a nasty short in the electrical system that knocked out all my fusible links, my alternator, my starter and so on so forth. However, the EEC-IV and other electronics were not affected. This puzzles me!!?? I would appreciate your reply very much. Thanks.
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