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Old July 10th, 2010, 21:39
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hubs97xj hubs97xj is offline
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Join Date: May 2008
Location: Fort Wayne, IN
Posts: 4,433
Re: Radiator Fan Override Switch (The Easy Way)

I tried the simple grounding of the wire, and it threw a code. I used a relay (NO/NC) to open the PCM side and ground the relay side, to prevent that, but it would still throw a code when the PCM wanted to run the fan. I gave up as the cold weather arrived. I've read numerous posts on other forums where guys said this mod (the simple grounding of the wire, not fyrfytr's variation) didn't throw a code on 97+ Jeeps, but that wasn't my experience.
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