Question about Chevrolet Impala

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The car was overheating and shutting off I changed the thermostat, water pump, lower radiator hose, and it still over heated so we ran a pressure check and it was good so we checked the lower intake gasket and it was bad so we changed it. we changed the oil and plugs as well but it's still over heating and blowing cold air with the heat on is it the heater core needing replaced ?

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Something has gone awry with the flow in your system. When the car is cold (please make sure it is really cold), remove the radiator cap. If it doesn't have one and the only fill place is the water capture bottle, remove the top radiator hose and prop it up. Crank the car and let it idle. As it gets warmer, look to see whether there is any flow or activity. There should be plenty of movement. On a car where you have to remove the radiator hose to look at this, the water will spit out. BE CAREFUL OF BURNS. (If/when it does, shut the car off immediately.

I don't know whether you've had a flush done, but if you did a pressure test, they probably checked this too. If not, check for that flow. If you're not getting heat in the heator core, that is but one more clue that flow is impeded.

Posted on Oct 13, 2010

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