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Re: Rough Idle when warm under load 99 suburban
Hi Jim:
Sounds like all the symtoms my 97 Suburban had, and it was the intake gasket. I did repace it about 50000 mi earlyer. The new one was a Felpro steel renforced. No problems since. Kind of a pricey gasket at about a hundred bucks but thats a job I do not want to do a 3rd time.
Anyway my 2 cents
Good luck
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