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Q: I have a 99 deville 4.6,when I run the ac the fans run fine and you can drive on 1999 Cadillac DeVille

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
but when you shut the ac off the fans quite and do not come back on period. I replaced the fan relays and the ect sensor. Something should tell the relays to turn the fans on when the engine gets warm but it's not. What sensor does this. Can you help?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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