99 Jeep Grand Cherokee problem

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scrappydoo - 27 Apr 2005 15:20 GMT

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?

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Snow - 27 Apr 2005 16:04 GMT

Engine size? air-conditioning? are you talking about electric fan? extra
info needed

Snow...

> 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
[quoted text clipped - 6 lines]
> Is there anything else that i should look at to fix this problem instead
> of replacing the fan every 6 months or so?

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Mike Romain - 27 Apr 2005 16:24 GMT

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

> 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
[quoted text clipped - 5 lines]
> Is there anything else that i should look at to fix this problem instead
> of replacing the fan every 6 months or so?

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mic canic - 29 Apr 2005 04:06 GMT

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

> I would test the fan and if it fails hope it is still under warranty.
> (not likely, but one can hope)
[quoted text clipped - 21 lines]
> > Is there anything else that i should look at to fix this problem instead
> > of replacing the fan every 6 months or so?

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Dave Lee - 27 Apr 2005 23:43 GMT

This wouldn't pass inspection?? Sounds more strict than here in RI.

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Buford - 29 Apr 2005 00:00 GMT

My '99 GC had the same problem that started with the fan staying on to
long and degenerated to not cycling on at all. Replacing the fan rela
switch solved the problem, but it was a bear to get to, located unde
the battery shelf. Good luck

--
Bufor

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