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#214839 - 07/09/11 03:41 AM hissing noise from engine car running hot....HELP!!!
BWard89 Offline
Junior Member
Registered: 07/09/11
Posts: 1
2004 grand prix just put a brand new radiator on it because it was running hot about 2 weeks ago. Now it is running hot again. Get a warning light to turn off a/c for engine protection(no a/c on). I turn off the car and i can hear a hissing noise. Looks like it leaking coolant.
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#214853 - 07/09/11 07:30 PM Re: hissing noise from engine car running hot....HELP!!! [Re: BWard89]
jjcom Offline
Member
Registered: 08/12/06
Posts: 464
Loc: USA
Any idea where its leaking coolant? Did you replace the thermostat too?
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#214963 - 07/13/11 04:35 PM Re: hissing noise from engine car running hot....HELP!!! [Re: BWard89]
HercMan(Rob) Offline
Member
Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
You've got a leak somewhere. If it's hissing and you see the coolant look under the hood at the radiator cap and the hoses.

I'm surprised you had to change the radiator. Was it damaged? Or did you just change it to fix the overheating? And if the later how did you come to the conclusion the radiator was bad?
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#215201 - 07/25/11 03:11 PM Re: hissing noise from engine car running hot....HELP!!! [Re: BWard89]
Romlock Offline
Junior Member
Registered: 07/25/11
Posts: 1
Check the coolant elbows. I just had that happen to mine today.
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