99 Jeep Grand Cherokee problem

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04-28-2005, 11:06 PM

#21

mic canic

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Re: 99 Jeep Grand Cherokee problem

there is a relay behind and under the right headlite( fan control relay)
it will more times than not set a fault code when it goes bad

Mike Romain wrote:

> I would test the fan and if it fails hope it is still under warranty.
> (not likely, but one can hope)
>
> Other than that I would maybe suspect bad connections on the plug. If
> the connection is ratty, it can cause the wiring to overheat which can
> kill the fan.
>
> Then there is the switch to turn it on. That is usually a low powered
> trigger switch near the thermostat that fires a relay. I would check
> the relay connections for corrosion too, same deal corrosion can cause
> too much heat in the wires.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> scrappydoo wrote:
> >
> > My 99 Jeep Grand Cherokee Laredo has a problem with what i think is the
> > radiator fan. In Aug, I went to get my jeep inspected and it wouldnt pass
> > because the radiator fan was not kicking on to cool the engine. I replaced
> > the fan and everything worked fine. I tested the old fan and it would not
> > work. About six months later, I was sitting in traffic and my engine
> > started heating up again. I looked at the radiator fan while the car was
> > running and it would not turn on. Why would a brand new fan quit working?
> > Is there anything else that i should look at to fix this problem instead
> > of replacing the fan every 6 months or so?