Question about 2000 Jeep Grand Cherokee
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Posted on Jan 02, 2017
The relay sits under the hood in a black box.If your not handy with a volt meter or test light you wont be able to tell if the relay is bad.You could just replace the relay as its cheap and pops in like a fuse or you can unplug the fan and run a wire to the positive side of the battery,if the fan comes on the relay is most likley the issue if the fan doesent come on then the fan may be faulty.If you turn the air conditioning on the fan should come on,if it does i would check the water pump.
Posted on Jul 19, 2008
Check the wiring from the relay to the fan motor, and check the wiring from the fuse block. Basically check all wires that supply power to the fan motor, use a volt meter. Fan Relay (behind headlight, under battery) on the 2001 GC 4.0L are a piece of ****, I change mine almost yearly. The problem is their location, a high heat area prone to the elements. I understand that 2002 and newer, the location was changed and the problem solved. Relay might close the circuit when cold or at reasonable temps, but might open a circuit when it heats up, causing the problem.
Posted on Apr 03, 2009
Once the radiator fan operates when hot, then that part of the system is fine. It definitely sounds like the radiator needs flushing out. I had this same problem with a taurus and I flushed the radiator out for a good twenty minutes; you should have seen the stuff that came out! Disconnect the lower hose and drain **** then stick the garden hose in the radiator cap. I would surely do this.
Posted on Jun 11, 2009
SOURCE: 89 jeep cherokee overheating
Ok, fans work but you should replace temp. sensor so they come on automatic. If the temp gauge inside the car is getting really hot its either because the termostat is stuck closed or your water pump is pumping water to circulate it through the radiator and engine
Posted on Aug 29, 2009
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