Jeep Grand Cherokee

Why would the radiator fan on a 1999 Jeep Grand Cherokee not come on when the AC is engaged if it does when the temperature reaches a certain level?


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Wiki User
2004-11-17 09:47:00
2004-11-17 09:47:00

AC pressure transducer.


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Electric cooling fan? Fan placed behind radiator to aid in engine cooling activated when engine coolant temperature exceeds 235 degrees F or when A/C or defroster is engaged

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The fan comes on and run continuously when the A/C is engaged which is normal. It will also come on to cool the coolant in the radiator to prevent the engine from overheating once the coolant reaches a predetermined temperature.

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This will happen if the 4 wheel drive is engaged.

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