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electric cooling fan problem?

Old 11-07-2011, 02:59 AM
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Default electric cooling fan problem?

To resolve my electric fan problem on my '88 4.0, I went to http://www.lunghd.com/Tech_Articles/Cooling/Electric_Fan_Diagnosis.htm
The test results tell me to replace the "fan diode assembly". To me, a schematic might as well be in Chinese. I'm good with pictures but I can't find a picture of what it looks like...The folks at Auto Zone say they've never heard of one. Your help is appreciated.
Old 11-07-2011, 05:32 AM
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Old 11-27-2011, 12:03 AM
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Thanks for the help..That was the culprit...Now everything's cool..
Old 12-01-2011, 08:33 PM
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Originally Posted by Shadetree
Thanks for the help..That was the culprit...Now everything's cool..
What I forgot to include is that the Jeep dealer told me the Fan Diode Assembly and the ABS Diode were no longer manufactured. They referred me to the local Pick & Pull. I also found a lotta neat stuff I didn't even know I needed...
Old 12-21-2011, 01:29 PM
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Originally Posted by Shadetree
Thanks for the help..That was the culprit...Now everything's cool..
Hey I was looking for the fan diode too, but I couldn't find anything under my hood that looked like the picture in this thread. Did you end up finding yours right near the air box or what?
Old 12-21-2011, 01:32 PM
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anyone know what that does? is it a relay of some kind or voltage regulator or just a fusable link?
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