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tpulliam79 · 09-29-2008, 11:01 PM

well still no luck... new o2 sensor, icm , iac, tps , coil, cap, rotor ,plugs , wires , coolant temperature sensor, fuel filter, had injectors cleaned, mechanic was unsure... going to have fuel pressure tested in a day or two, I need to take a break from this for a day or two, and no vac leaks, and ran seafoam... I am stumped......the short block is from a 78 blazer but the heads are from the 91 shouldnt make a difference though. really seems like a fueling problem at this point hate to say it but I almost hope my fuel pump is the problem as I am out of ideas.

09-29-2008, 11:01 PM	#16
tpulliam79 Registered User Join Date: Sep 2008 Location: spokane valley, wa Age: 29 Posts: 283	Re: 1991 chevy 1500 5.7 tbi erratic idle well still no luck... new o2 sensor, icm , iac, tps , coil, cap, rotor ,plugs , wires , coolant temperature sensor, fuel filter, had injectors cleaned, mechanic was unsure... going to have fuel pressure tested in a day or two, I need to take a break from this for a day or two, and no vac leaks, and ran seafoam... I am stumped......the short block is from a 78 blazer but the heads are from the 91 shouldnt make a difference though. really seems like a fueling problem at this point hate to say it but I almost hope my fuel pump is the problem as I am out of ideas.