my 89 ford bronco ii boggs down while taking of it also boggs down when I try to accelerate, what could cause this??

Asked by Jun 12, 2015 at 10:27 AM about the 1989 Ford Bronco II XLT 4WD

Question type: Maintenance & Repair

my truck runs well, it boggs down severely while I accelerate ,especially from a dead stop. if I let off the gas it runs if I give it more gas it boggs . what could be causing this??

2 Answers

104,245

Possibly bad throttle position sensor. But could be any number of things. How old are your spark plugs and wires? Air filter and fuel filter clean? Hear any hissing around intake area ?(vacuum leaks).

Bad TFI module. There was a big lawsuit and recall over. Your 89 Ford Bronco II is covered. I believe if you are under 100k miles you get a freebie, if not they run $40-90 at a parts store. I'd consider trying to mount it away from where it's at now. Even with a new design, you are still in a major hot spot under the hood.

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