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I have a 1994 caprice 5.7 liter v8 with two cooling fans. The second one is only supposed to come on when the a/c is running. It does not due to the Engine Control Module (computer brain) not telling it to. The fan was tested with a direct wire and it works fine. The options are to replace the ECM or run a jump wire where the relay for you fan(s) are and connect a toggle switch to it and cut it off and on as needed. .

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โˆ™ 2015-07-17 17:40:21
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Q: Why would the AC fans not come on when you turn on the AC?
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