ford f150 4x4 idle issues

Asked by Aug 10, 2014 at 03:22 PM about the 1992 Ford F-150 STD 4WD Extended Cab SB

Question type: Maintenance & Repair

I have very eratic idle issues than truck shuts off. I have replaced the idle and throttle sensors. also have good fuel pressure. don't know what the problem is?

1 Answer

16,905

would almost bet money your vacuum lines are brittle and leaking somewhere. I had an 88 5.0fi, i couldn't find any vacuum leaks. I took off the upper intake and redid every vacuum line I could and it fixed it

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