Question about 1997 Chevrolet Monte Carlo

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Car is not running hot but the overflow tank is bubbling hot

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I would flush out the cooling system and install 50/50 antifreeze to water solution and check that the cooling fan is going on and also that the thermostat is not stuck closed.

The overflow tank should never get hotter than the rest of the cooling system.

Posted on Jul 05, 2010

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My car is leaking coolant right below overflow tank, runs hot , now making loud noise, is a 1995 pontiac grand am

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If you are seeing air bubbles, then the cooling system still has air pockets in it. Loosen the overflow cap and leave it that way for a few days while you drive.Keep the heater turned on at the max heat level. Roll a window down if necessary. Check and top up the overflow bucket daily and top up as necessary. The bubbles should disappear after a few days, then you can tighten the cap. This should also solve your no heat problem. Once the bubbles are gone you can tighten the cap.

If the problem doesn't fix itself in a week, you should have the car looked at for a possible bad head gasket, which would force air into the cooling system. Hope this helps.

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