Question about 1999 Jeep Grand Cherokee

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Electric radiator fan wont turn on . but when fan is jumped with 12 volts fan works

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Heres a little test start vehicle turn a/c on high in the defrost position your fan should start if so than test hi low fan relay and replace coolant temp sender not sensor in some cases replace both thank u have a good day.

Posted on May 04, 2010

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It can be the thermostat,or not enough coolant,or air in the cooling system,or a coolant sensor that is bad,or a cooling fan relay.

Posted on May 04, 2010


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I have a 93 jetta with the 2.0l engine. Engine heats up when at idle with the a/c on. Auxiliary cooling fan is not working at all. Where is a good place to buy the auxiliary fan? Or is there anything else...

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