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Radiator fan switch on 98 Chrysler T&C keeps failing
This is a continuation of a previous post a few years ago. I have a 98
Chrysler Town & Country with a 3.8 L engine. The solid state relay that controls the radiator fans is mounted on the driver side wheel well. I am replacing this relay for the 4th time and getting tired of spending $70+ for the darn things. I have been told that one of the fans may be failing but diagnostics fail to point out anything abnormal. They will turn on and off just fine but that is the end of the diagnostics. There is nothing to show if there really is a fan problem or, if so, which fan. My local Chrysler service man wants me to "replace both fans" YEA RIGHT!!!. That still may not be the problem. One idea in one of the newsgroups suggested that the relay itself may not be properly grounded. I would think that they would us a closed circuit and not really need a chassis ground. Anyone have any thoughts? Thanks, J |
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> wrote in message ups.com... > This is a continuation of a previous post a few years ago. I have a 98 > Chrysler Town & Country with a 3.8 L engine. The solid state relay that > controls the radiator fans is mounted on the driver side wheel well. I > am replacing this relay for the 4th time and getting tired of spending > $70+ for the darn things. > > I have been told that one of the fans may be failing but diagnostics > fail to point out anything abnormal. electric motors that get old or overheat short windings, as a result the current goes up. A quick fix is to buy a mechanical lighting relay and run the fan power from the fan relay to the lighting relay. The lighting relay can take a lot more power and when it's contacts finally burn up you can just replace it, and it's probably a lot cheaper. If it is a fan failing, do a resistance check of the motors with an ohmmeter, and spin the fan gently. If one motor has a lot lower resistance, replace it. Ted |
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