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Old 12-25-2006, 11:35 AM   #7
Boog
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Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 12,888
Re: 1991 GMC runs poorly after engine is warm

I'm with Kevin. The coolant temp sensor failure will cause this very symtom.
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Boog
69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver
primer is finer
91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said.

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