Question about 2002 Jeep Grand Cherokee

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Driving down street with a/c on and the check guages light comes on. i stop pop the hood and notice the elec fan is not on. i go to autozone to run a quick diagnostic and the results come back and say i either have a bad o2 sensor or the fuse is bad or a bad connection in the circuit. i dont understand what that has to do with overheating. i am pretty sure my fan should be kicking on when the engine gets warm but its not.....any ideas?

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  • Anonymous Apr 30, 2009

    My car has been overheating (3 times). Had radiator and water pump replaced, now the head gasket valves and head shaved. I looked on line, looks like there may be a link to relay in computer not working. After replacing the radiator, the fan did a number on the shroud...it is no longer on the car. Found that is a common problem with Jeeps, and dangerous. My heating and ac have not worked properly for a while, either, resulting in dangerous driving conditions when window fog. This may be caused by air flow doors not operating properly, which can result in fire. Don't know if this has anything to do with the cooling system not working, but every time the car overheated, the heater stopped working properly. My mechanic is stumped. He purchased a new computer (used) which says the fans should be working, but they do not unless overridden to be on all the time when the car is turned on. Any help out there, or is this a lost cause?

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There is a recall on the electric fan. Contact your dealer. Also the solid state fan relay may be faulty or the fuse is blown. The fan relay is behind the front bumper cover.

Posted on May 02, 2009

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