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over heating problems. 04 g35 coupe

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Old Aug 8, 2015 | 11:05 PM
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Smittie20's Avatar
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over heating problems. 04 g35 coupe

What's up everybody. I have replaced my cooling system (radiatior, thermostat, water pump) and passed a head test. My car still over heats if I drive it for a long time. It burns through coolant also. I have zero idea what the problem could be. Maybe a hose? Please, any help will be great. Thank you
Chris
 
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Old Aug 8, 2015 | 11:21 PM
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Performed a pressure test on the system and cap?

You most likely still have air in the system. Going thru coolant means a leak tho. You need to pressure test with a free autozone rental tool.
 
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Old Aug 9, 2015 | 04:08 PM
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Originally Posted by ScraggleRock
Performed a pressure test on the system and cap?

You most likely still have air in the system. Going thru coolant means a leak tho. You need to pressure test with a free autozone rental tool.
yes we've done that and have a new cap on it. Also have bled the air out of the system. I believe there is a crack in the head somewhere. I could be wrong?
 
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Old Aug 9, 2015 | 04:29 PM
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If you pressure tested it and it held pressure, you shouldn't have a head gasket leak. I would get the pressure test tool again and check your new cap, and repurge the air that may be left in the system. These cars are notoriously hard to purge of all the air.

Also, check your overflow tank and cap and all hoses for cracks/leaks.

Also, when it overheats are you moving or idling? If it's overheating at idle, maybe your fans are failing to turn on. Or maybe only one is coming on.
 
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