Question about 1999 Jeep Grand Cherokee

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Electric fan on my 1999 jeep cherokee classic wont shut off after you turn ignition off what could be the issue?

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The relay is maybe sticking.
or there is a call for cooling when the engine is off.

if the fan turns off after a min or two then its ok.

if the fan stays on and will not trun off ever even after 30 mins then the relay is staying on and needs to be taken out and replaced.

Posted on Apr 26, 2010

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Posted on Jan 02, 2017

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1999 Jeep Cherokee Sport wont shift into overdrive P1491


P1491 - Radiator Fan Control Relay Circuit Open Or Shorted

When monitored: with the ignition key on, battery voltage greater than 10.0 volts and
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Set condition: an open or shorted circuit is detected in the radiator fan relay control
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Possible causes
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radiator fan ctrl rly circuit wire harn observable defect
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radiator fan relay control circuit short to ground
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1 Answer

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the fan relay may have went bad...if the fan doesnt come on the compressor will shut down because of excessive pressure...has he used a test light to check all the fuses under the hood and inside... pay particular attention to fuse 10 in the inside fuse box...if there is no power at all to that fuse it may be in the ignition switch

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