Question about 2000 Chevrolet Cavalier

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My 2000 Chevy Cavalier is overheating sometimes. When it is overheating, the electric fan doesn't come on. I've brought this to a mechanic and he couldn't find a problem. It didn't overheat that day. Would that be a thermostat problem? The radiator is full. This problem is becoming more persistent. Thanks in advance.

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Could be the thermostat or an engine temp sensor. I would change thermostat first. Cheapes and easiest.

Posted on Nov 09, 2010

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There is a relay switch or a sensor. If when the AC is on and the fan does not come on then it is the fan. Sometimes they go out gradually and check to be sure all the wires are together securely. It could be that there is a loose connection to the fan motor. It happens all the time.

Posted on Oct 30, 2011

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REMOVE
  1. Negative battery cable.
  2. Raise and support vehicle.
  3. Coolant fan mounting bolt.
  4. Electrical connector from coolant fan.
  5. Coolant fan assembly out through the bottom.
INSTALL
  1. Coolant fan assembly in through the bottom.
  2. Electrical connector to coolant fan.
  3. Coolant fan mounting bolt. Tighten bolt to 6 Nm (53 inch lbs.) .
  4. Lower vehicle.
  5. Negative battery cable.
will need email address to send image

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