Radiator fan coming on
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Radiator fan coming on
So my truck seems to have developed a strange habit of having the cooling fan turn on too early and staying on. Either that or it is just louder than it used to be. It comes on almost immediately after starting the truck, even fully cold after being in the garage. And it seems to stay on. The engine temp is not abnormal, nor is the outside temp.
Any ideas? Do you think the 5 year/100K powertrain warranty would cover having this looked at?
Thanks,
Rob
Any ideas? Do you think the 5 year/100K powertrain warranty would cover having this looked at?
Thanks,
Rob
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Join Date: Jan 2010
Location: San Pedro, California
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The fan has 2 speeds and are switched on by relays in the TIPM. Assuming that the high speed fan is "stuck on" when the ignition is on, then pulling the relay may give you some insight. Maybe relay is loose, or permanently on. I don't have the relay designators but they should be listed in the TIPM cover.
Per the wiring diagram, the relays are controlled by the TIPM circuitry based on various inputs and sensors. If it's not the relays, the problem is the TIPM module itself - non-serviceable.
Per the wiring diagram, the relays are controlled by the TIPM circuitry based on various inputs and sensors. If it's not the relays, the problem is the TIPM module itself - non-serviceable.
Last edited by Pedro Dog; 07-25-2015 at 07:42 PM.