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Old 09-25-2008, 07:19 PM   #4
cancritter
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Join Date: May 2006
Location: Alberta Canada
Age: 50
Posts: 2,328
Re: 1991 chevy 1500 5.7 tbi erratic idle

have a close look at the tbi throtleshaft for any play...if theres play it can throw your tps "throtle position sensor" off..if you havent replaced the TPS would do so as they wear and your trucks got a few years on it and dought prievious owner did...in anycase is one of them things to watch for with tbi's
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[Stole/FOUND 13/03/08 :O)
91GM 4x4 excb 5.7 @ 40 over, Westers,Eld 3704.Lunati Trickflow 195 @1.6 RR,Hooker Walpro 190/overbuilt 700r4 /TCS TC,4.10/tru trac,14 bolt,Hooker LT,areofilter,Extreme TBI.msd and still adding


97/rclb/5.7/westers tune/stock
07/ 6.7 Cummins..truck included
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