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2003 Pontiac Grand Prix overheating
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rlrippy1980
New User
Mar 30, 2011, 9:02 AM
Post #1 of 4
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2003 Pontiac Grand Prix overheating
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My car started overheating about two weeks ago. Since then we have replaced the head and intake gaskits, ( car ran fine for a day or two) then ran hot again. Replaced te thermostat. No change, Then water pump. no change. Have flushed and cleaned radiator. HELP!!!!
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Hammer Time
Ultimate Carjunky
/ Moderator

Mar 30, 2011, 1:02 PM
Post #2 of 4
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Re: 2003 Pontiac Grand Prix overheating
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You need to stop just throwing parts at it and have it diagnosed accurately. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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rlrippy1980
New User
Mar 30, 2011, 1:09 PM
Post #3 of 4
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Re: 2003 Pontiac Grand Prix overheating
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we replaced the gaskets because there was oil in my water. The intake gasket was bad. The thermostat was stuck, so it wasn't working properly either. The water pump was a guess, but the rest was replaced because it needed to be. Thank you
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Hammer Time
Ultimate Carjunky
/ Moderator

Mar 30, 2011, 1:11 PM
Post #4 of 4
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Re: 2003 Pontiac Grand Prix overheating
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Did you send the heads out a machine shop to be resurfaced and tested for cracks when they were off?Did you replace the head bolts when re-installing them? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Mar 30, 2011, 1:14 PM)
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