stalling or irratic idle, is this the fuel injector
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1990 GMC 1500 Pickup
Question: fuel injector, fuel pump
Answer #1Bret Bodas from RepairPal Test Shop, August 27, 2009, 13:31Master
This could be caused by many different things. You'll need to get it diagnosed to know what is causing the problem.
ReplyVisitor, July 28, 2011, 19:32
I have a 2000 GMC Sierra 1500 with intermittent high idle and had a diagnostics test performed. It showed nothing and was told process of elimination.
Changed Idler Air Control Valve as recomended by machanic and that didn't fix the problem