electric fan air flow direction?
11-01-2015, 12:24 AM
#16
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Year: 2012
Model: Grand Cherokee (WK)
Engine: 3.6 V6
Good you caught it, if you don't mind post a link for the fan. The tabs on mine broke off and I have wear on a hose underneath as a result. Thanks.
11-01-2015, 01:29 AM
#17
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Year: 2000
Model: Cherokee
Engine: 4.0
Amazon.com: TYC 620560 Jeep Cherokee Replacement Radiator/Condenser Cooling Fan Assembly: Automotive
I believe this was the one I bought. I think your 95 takes this one.
11-01-2015, 02:47 PM
#20
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Year: 2000, (1957 Willys)
Model: Cherokee
Engine: 4.0L
I found my fan running backwards as well. Stock wiring. Actually, my son noticed it while we were working. I had been having overheat issues....
I had to reverse the wiring.
2000 XJ
Wonder if somebody had a bad day at the factory.
I had to reverse the wiring.
2000 XJ
Wonder if somebody had a bad day at the factory.
11-02-2015, 04:53 AM
#22
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Year: 97
Model: Cherokee
Engine: 4.0
Good to hear you got yours going. Looks like you may be the first to find and point out a common issue to look for with these. Pretty sure I saw a few other past posts about overheating 2000 models. I too would be curious if it might actually be the factory body harness plug that was put out pinned backwards?
Or maybe even the wiring diagram aftermarket companies got a hold of to make their application. I have found wrong colors listed in repair manual diagrams before myself, manuals are like computers, they are only as accurate as the information people load into it.
Last edited by Bugout4x4; 11-02-2015 at 04:55 AM.
11-02-2015, 11:32 AM
#23
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Year: 2000
Model: Cherokee
Engine: 4.0
Good to hear you got yours going. Looks like you may be the first to find and point out a common issue to look for with these. Pretty sure I saw a few other past posts about overheating 2000 models. I too would be curious if it might actually be the factory body harness plug that was put out pinned backwards?
Or maybe even the wiring diagram aftermarket companies got a hold of to make their application. I have found wrong colors listed in repair manual diagrams before myself, manuals are like computers, they are only as accurate as the information people load into it.
Or maybe even the wiring diagram aftermarket companies got a hold of to make their application. I have found wrong colors listed in repair manual diagrams before myself, manuals are like computers, they are only as accurate as the information people load into it.
11-03-2015, 06:21 AM
#24
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Year: 97
Model: Cherokee
Engine: 4.0
I wonder if its something that the factory did purposely on the models with the pre-cats in the manifold. (2000-2001) Maybe the thinking was that at a stop it would act like a vent to force out some hot air from under the hood, thus preventing heat soak? Maybe its why they changed the design of the fan for those years?
Shhh...Don't say that too loud or some engineer will decide to do something like that and mess things up. lol. Honestly, I have never seen a reverse flow system out of the engine compartment except in heavy equipment where the engine is mounted in the rear. But I did do a search this morning just incase engineers had already messed things up and couldn't find anything related concerning reverse flow on these.
There was a recall for the electric fan blades exploding on these years though. There were also a LOT of complaints about overheating issues going back to the dealer to be fixed in your year...I have to wonder if this was indeed because of reversed flow and they have been able to keep the actual cause under wraps? Something like this could be pretty embarrassing for them if true.
Guess all we can do is keep an eye out for this as a possible problem with these and see how many pop up.
11-03-2015, 06:58 AM
#25
Beach Bum
The only thing that changed with the e-fan through the XJ's production is the number of blades.
I believe the reverse operation has to do with aftermarket fans only.
On another note, it is also possible to get a water pump for the XJ that turns in the wrong direction. Always verify impeller direction.
I believe the reverse operation has to do with aftermarket fans only.
On another note, it is also possible to get a water pump for the XJ that turns in the wrong direction. Always verify impeller direction.
11-03-2015, 07:27 AM
#26
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Year: 97
Model: Cherokee
Engine: 4.0
Thanks Steve
The only thing that changed with the e-fan through the XJ's production is the number of blades.
I believe the reverse operation has to do with aftermarket fans only.
On another note, it is also possible to get a water pump for the XJ that turns in the wrong direction. Always verify impeller direction.
I believe the reverse operation has to do with aftermarket fans only.
On another note, it is also possible to get a water pump for the XJ that turns in the wrong direction. Always verify impeller direction.
That is great information about the water pumps! I have run into this problem with other makes because they were also used in marine applications having counter rotating twin engine setups. Is this true for these or is there some other reason for reverse rotation pumps on these?
06-06-2017, 03:34 PM
#27
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Model: Cherokee
10-05-2023, 06:13 PM
#28
Seasoned Member
It makes me wonder the same thing. I checked the pinout and it is correct coming from the harness. However, on the fan side of the plug there is a heavy gauge blue wire and a lighter black one. The plug has the black wire getting the power and the heavy blue one as ground. Backwards. I ended up cutting the wires on the fan side and switching, soldering, taping it up. It spins correctly now, sucking much air. This was a brand new replacement I bought off amazon. I wonder how many others are having heat soak problems due to this same issue. Its worth a look I'd say. Since I dont think I'll be seeing any more 75+ degree days here I will have to wait for spring to be sure.
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