Chevy Venture
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Why does 1997 Chrysler cooling fan run constantly?

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Wiki User
2011-09-13 23:42:32

ummm from what you describe it seems to me whoever had the car

before you rerouted the fan to a all power line meaning they

rewired it to a positive wire so fan comes on constant it may be

going right to batt or fuse box

Check the coolant temperature sending unit and replace it if you

need to if the fans have not been rewired. By default, one fan runs

pretty much all the time, with the second fan kicking in when it

detects a rise in temperature (due to the coolant temperature

sending unit) or when the A/C is switched on. If it is not the

sending unit, it could be in the wiring for the A/C.

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