Question about 1992 Ford F150 SuperCab
1992 f150 351w intermitant high rpms 2500-2800
A 5.8 will surge at idle or run if the ground from the passenger manifold isn't connected to the frame correctly. This is one of many possible ideas, I hope it helps.
Posted on Jan 14, 2009
I'd try cleaning the throttle body, and replacing the coolant temp switch. Hope this helps
Posted on Nov 02, 2008
Possiable IAC valve sticking or faulty TPS.
Posted on Aug 01, 2008
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Posted on Jan 02, 2017
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