2004 Chevrolet Impala Been Having Overheating Changed Thermostat Water

2004 CHEVROLET IMPALA
140,000 MILES
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I have been having an overheating issue, I have changed the thermostat and water pump and bled all the lines of air and the car still keeps on overheating and blows the liquid out of the overflow. I am stuck dont know what to do?
Nov 25, 2012 at 12:35 PM
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JDL
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Where applicable, maybe radiator cap, another possibility is combustion gases in the coolant. Have you visibly checked for coolant flow? Does the cooling fan work?
Nov 25, 2012 at 12:40 PM
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The fans kick on when its warm and ive actually seen the coolant flow from the over flow into the radiator. After driving for awhile its fine, then all of a sudden it will overheat and shoot the coolant out of the overflow cap. Ive bled all the lines. Just seems to all of a sudden just stop flowing? Im stumped!
Nov 25, 2012 at 4:41 PM
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Could it be a cracked head? Its just odd because there's none leaking outta the block or water in the oil also no sweet smell from the exhaust.
Nov 25, 2012 at 4:42 PM
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JDL
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I don't know if flushing the engine will help anything or not? Intermittent issues can be a pain to find.
Nov 26, 2012 at 5:49 AM
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