Why won't it work?
bdahlg
09-09-2008, 01:46 AM
91 cherokee 4.0L 4WD
My cooling fan wasn't working. When i jumped it, still nothing. Went do to advance autos and picked up another one. Now it turns on but not when its supposed to. I believe its supposed to kick on when either the A/C is on or when it reaches about 220. When she is above operating temp (needle is visibly over 210) and i shut it off, it comes on when when i turn the ignition key and will remain on until it reaches operating temp, then will shut off. It WILL NOT turn on unless i repeat the procedure; she will over heat when the engine is running. Jumped the relay (hot wire all times) and it comes on so i know its getting some juice. Took off negative battery cable for 12 hours to reset the ecu, but still did the same thing. No codes.
Any help would be great.
My cooling fan wasn't working. When i jumped it, still nothing. Went do to advance autos and picked up another one. Now it turns on but not when its supposed to. I believe its supposed to kick on when either the A/C is on or when it reaches about 220. When she is above operating temp (needle is visibly over 210) and i shut it off, it comes on when when i turn the ignition key and will remain on until it reaches operating temp, then will shut off. It WILL NOT turn on unless i repeat the procedure; she will over heat when the engine is running. Jumped the relay (hot wire all times) and it comes on so i know its getting some juice. Took off negative battery cable for 12 hours to reset the ecu, but still did the same thing. No codes.
Any help would be great.
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