Cheapest Fan Mod!!! - Cherokee SRT8 Forum
WK1 General Performance Discussion If you are planning on modifying your Jeep Grand Cherokee SRT8 with a performance enhancing modification, this is the section to post about it.

 
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post #1 of 4 (permalink) Old 04-07-2007, 04:52 PM Thread Starter
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Cheapest Fan Mod!!!

I just finished installing my Motorad 180 tstat, my advice to anyone doing this is buy a gallon of Mopar coolant, your gonna need it. Install took about 10 minutes.

After I was done refilling the coolant etc I wanted to see the numbers under the low speed fan relay so I pulled it while the car was running, guess what?
The ECU see's that as a low speed circuit coolant fan failure and turns on the high speed fan relay 100% and yes you get a CEL, thanks Dashhawk for clearing my CEL, this thing has paid for itself 10 times over and even more so mine was FREE!

So there you have the cheapest fan mod, pull the low speed fan relay.

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post #2 of 4 (permalink) Old 04-07-2007, 05:03 PM
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Re: Cheapest Fan Mod!!!

Is this mod going to cause any problems besides the CEL? Sounds like a good solution to "coolerdown".
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post #3 of 4 (permalink) Old 04-07-2007, 05:06 PM Thread Starter
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Re: Cheapest Fan Mod!!!

Quote:
Originally Posted by BBLV
Is this mod going to cause any problems besides the CEL? Sounds like a good solution to "coolerdown".

No the CEL is to let you know that the ECU is not seeing the preset voltage to and from the relay, hense it turns on the CEL to let you know about the problem.
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post #4 of 4 (permalink) Old 04-08-2007, 02:05 AM
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Re: Cheapest Fan Mod!!!

Quote:
Originally Posted by Inferno SRT8
I just finished installing my Motorad 180 tstat, my advice to anyone doing this is buy a gallon of Mopar coolant, your gonna need it. Install took about 10 minutes.

After I was done refilling the coolant etc I wanted to see the numbers under the low speed fan relay so I pulled it while the car was running, guess what?
The ECU see's that as a low speed circuit coolant fan failure and turns on the high speed fan relay 100% and yes you get a CEL, thanks Dashhawk for clearing my CEL, this thing has paid for itself 10 times over and even more so mine was FREE!

So there you have the cheapest fan mod, pull the low speed fan relay.

Do you need the Dashhawk to clear the CEL? I would hope sticking the relay back in and running for a short time would auto clear.
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