1993 Ford F-150 Q&A
1993 Ford F-150 Question: engine surges then bogs down only between 1000 to 1500 rpm driving and idling.
poss plugged exh system.confirm with muffler shop - globalhelper
Agree with #1 - csubak30
The symptoms sound like a clogged exhaust,but another possibility that can cause a rich running concern is a faulty air charge sensor that is mounted in the lower intake.Whrn these go out they can make the exhaust glow cherry red due to excess fuel injected into the engine.Just a thought,and easy to check by removing it and looking at it. - bmdouble