Thread: coolant problem?

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  1. #1 coolant problem? 
    GT Level Member Pontiac Racer's Avatar
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    awhile ago i noticed my coolant in my radiator was down about 6 inches than normal so i filled it up no problems right? well i checked it again and its back where it was before, 6 inches below. it wasn't leaking or anything. i did some research and i learned the upper intake manifold can warp can coolant can leak into it. is that where its going? i don't think its getting burned due to a bad head gasket or else it would be a lot lower. it only stops at a certain point. whats going on?
    '01 GT, OnStar antenna removed, GT emblem on grille, PONTIAC bumper inlay, engine cover and insulator removed, polished stock exhaust tips, 17" Bullitt rims
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  2. #2 Re: coolant problem? 
    GT Level Member WickedGoat's Avatar
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    If you are topping off the coolant and it is not staying at normal level than you have a leak or it is burning. Common leak points are the lower intake manifold gasket, which you will see coolant pooling up on the transmission bell housing and a wet trail where the manifold meets the cylinder head. The coolant elbows are also prone to leaking. Aside from these 2 points, all of the normal cooling system parts need to be checked... radiator, hoses, water pump, coolant overflow bottle, heater hoses, heater core, thermostat, etc. Take your oil cap off and see if you have a brownish milky mess on it. This indicates coolant mixing with the oil. Best thing to do is top off the coolant and then pressure test the system. If there is a leak, it will do it. If you can see coolant bubbling while the car is running and it smells like exhaust, you may have a blown head gasket or crack in the block or head where exhaust is leaking thru. Dense white smoke that smells like coolant comming from the exhaust is usually a blown head gasket or crack on the intake side, allowing coolant to get into the combustion chamber and burn.
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  3. #3 Re: coolant problem? 
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    Is that about the level of the coolant sensor? Just a thought.
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  4. #4 Re: coolant problem? 
    GT Level Member WickedGoat's Avatar
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    I think so... I think it sits about 4-6 inches down the radiator.
    2014 Chevy Impala LTZ Limited -- Silver/Black, Grand Prix replacement
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    2004 GMC Yukon SLT -- wife's daily driver
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  5. #5 Re: coolant problem? 
    GrandPrix Junkie SgtMarshal's Avatar
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    Mine leaked coolant during the summer. it didn't leak while it was sitting in the driveway or garage, only when I was driving down the highway. I ended up fixing both coolant elbows and the lower intake manifold gasket. I also installed an intercooler at the same time so I just used rtv to seal the supercharger to the intercooler. mine was also leaking from the water pump, but it hasn't leaked since the intercooler install, so I dont think I am going to worry about that one anymore.
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