Question about 2000 Jeep Grand Cherokee

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99 grand cherokee with new cooling fantemp sensor and relay but fan wont operate.

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Hi, if you have replaced the sensor which turns the fan on and off and you have also replaced the relay then the only thing left that could be faulty is the fan motor itself. double check you have wired it up correctly and also double check the coolant is getting hot at the top and bottom of rad just to rule out thermostat or water pump being at fault then really all you have left that could be causing the problem is the fan motor itself.

one thing you can do to test the fan is to short the two wires together and see if the fan runs the wires that come from the fan to the sensor if you can get some wire to short between the two wires as well as having it still connected this should then get the fan working if it dont work then the fan needs replacing

Posted on Jul 20, 2010

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ELECTRIC Cooling Fans are Controled By
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UNPLUG the Cooling Fan PLUG @ FAN Itself
Use DIRECT CURRENT AT the FAN PLUG<< +POS & --NEG FROM BATTERY ONE BRIGHT COLORED WIRE at FAN PLUG is +POS. the Other is --Neg If the Fan COMES ON then your Problem IS BEFORE the FAN @ ONE of the 3 OTHER COMPONENTS ABOVE

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