2.3L 4cyl or 3.0L V6, 6th Generation

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fan does not work unless ac is on

Why the fans does not come on when the car is idling so the temperature hand goes up. Turn on AC and temperature hand goes down.

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After you have run the engine to get it warm (hot), switch off the engine and 'feel' the temperature of the radiator hoses. If the bottom hose is 'cooler' than the top hose then the thermostat has not opened to allow the coolant to flow to cool the engine and also the coolant fan near the radiator will not switch on.

if they are both the same then it may be either the coolant fan, fan circuit or switch that is faulty.

The A/C fan near the radiator switches on when you turn on the A/C and this is why the temp gauge drops.

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