Question about 2000 Jeep Grand Cherokee
Aside from checking the actual wiring for proper connections and shorting, the only thing you have not changed is the temp sensor. Sensor sends a signal to the computer which sends a ground to the relay which then completes the circuit to the fan. The fan should not run full time but only when needed. Sometimes covering the front of the grille with cardboard to force it to overheat is faster than standing there waiting for it to get hot enough to come on. If it begins to overheat and the fan still has not come on, change the temp sender and check the wiring and connectors with a meter. The computer could also be bad but that is extremely rare.
Posted on Jul 01, 2010
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