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Low speed fan resistor, probably Posted by Ari [Email] ![]() ![]() In Reply to: cooling fan keeps blowing fuses, Richard Dickinson, Mon, 30 Aug 2004 20:21:07 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Most likely the problem is the low speed circuit. You've got a two-speed fan, and it should come on slowly first, then if the radiator is still hot, kick into high. If the low speed circuit isn't working, it goes directly from off to Hi. That takes a lot of current all at once, and the fuse blows.
First, make sure the resistor on the fan is OK. Check the wiring to it. Make sure the resistor isn't blown (use an ohmmeter). The next possibility is a bad low-speed fan relay. Both fan relays are located in the fuse box in the engine compartment. It could also be a bad thermoswitch (the three-wire gizmo stuck into the radiator), but since that one is more work to troubleshoot, go for the resistor and relay. A volt-ohm meter will come in handy.
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