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Fix the coolant leak and see if that solves the other problems. If the coolant level is low, it won't circulate through the heater coil and the radiator fans won't go on. If it boils, the steam will roll through the system, heating the heater coil and activating the fans (cooling it back down) and . That's my theory at least. It can't be good for ...


The culprit is probably a sticky or malfunctioning Idle Air Control (IAC) valve. Lucky for you it is located right on top and connected to the throttle body. You can try taking it off and cleaning it, making sure not to play with the pintle (plunger) itself, as the gears inside which actuate it can easily be broken/stripped. Use some carburetor cleaner both ...

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