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  #1  
Old 04-23-2005, 10:47 PM
howsz howsz is offline
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3.8 hot intake backfire

i have a 2003 grand prix w/3800 engine has anyone heard of what i would desribe as a backfire in the intake sometimes when restarting after it has been hot (coolant) its like a loud pop. have had a dealer look at it twice, they say they can not dulipcate my problem when they have it. i have heard of plastic intake problems. someone told me their is a service bulletin out there. anybody know of this??
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Old 04-26-2005, 01:10 AM
jchavis jchavis is offline
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There is one out about the intake gaskets going bad and having to be replaced but never heard of the popping sounds.
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