87' TBI High Idle - The 1947 - Present Chevrolet & GMC Truck Message Board Network

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87' TBI High Idle

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11-01-2003, 01:05 AM	#1
.38 special Registered User Join Date: Oct 2003 Location: Houston area Posts: 65	87' TBI High Idle My first post, seems like a cool board. I have a TBI 350 in my 87 GMC. Since I have owned it (3months) it has had a pretty high idle off and on. I tried to fix the problem by adjusting the tps which was at .74--I adjusted it to .41 like it said in the manual. This did not fix the problem, it is idling at like 1800 rpm. Please help

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