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  3. 1997 E9 528i auxiliary fan issues/headaches. I have read, watched, and tried everything under the sun to fix my problem.
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Chris Kreska
Jul 23, 2020

1997 E9 528i auxiliary fan issues/headaches. I have read, watched, and tried everything under the sun to fix my problem.

Aux fan used to run only on high when engine got hot, not over heated but more than warm. Fan never comes on with ac. I jumper the radiator fan switch(sensor) and the fan will run on high and low speeds while jumpered. I have checked/replaced every fuse and relay I can find and nothing is working. Originally the resistor pack was bad so I replaced that and made no difference. Going on a whim, I replaced the temp sensor, no help. ANYONE??🤔

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