Question about 2003 Chevrolet Impala

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Just replaced thermostat and 2 hoses and car is overheating mor now than before replacements

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Check your radiator it sound's like it is unable to cool your engine If it over heats faster with A/C on replace your rad. hope this helps CJ

Posted on Aug 03, 2010

  • john_jr1 Aug 03, 2010

    before replace radiator do a couple of test before you spend the money .

    Start the car and allow it to run. As it begins to warm up, feel the outside radiator fins with your hands. The entire radiator should heat up as hot radiator fluid passes along inside, but if you feel hot and cold spots on the fins, the fluid is not flowing correctly, and that means that the cooler areas have become clogged. you might have to put hand between fan

    Step 2
    Remove the radiator cap on a cold car and start it up. Grab the top radiator hose and squeeze it when it's under zero pressure to get a feel of what that's like. Replace the radiator cap, rev the engine to about 3000 RPM (this does not have to be exact, you just want to spool up the engine a bit here), then squeeze the radiator hose again. A clogged radiator will send all of the radiator fluid directly into the hose and make it very hard to squeeze.

    I hope it not the head gasket

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