‘11 Paxton Electric fan problems

S197Haddan

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Oct 17, 2021
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Dothan, Al
Hey, guys! So just installed a Paxton setup on my 2011 automatic and I’m having an issue where every time my electric fan comes on at idle it stalls the car. Anybody have these problems? Known fixes?
 

stang910

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Mar 25, 2010
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My guess is your fan is drawing too many amps or you have a weak alternator. Maybe both.
 

slow306stang

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Jan 24, 2004
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Loose/disconnected PCM ground. The fan draws a lot of amps and the alternator isn't being told to come on. Check the ground under the radiator cover on the passenger side of the vehicle. It should be about a foot away from the fuse box.

I had the same issue with the electric fan shutting my car off. When I wired in my Methanol injection kit I used the same ground but left it loose. It took a few months to pop up but when it did I was stumped. I also purchased a new alternator to no avail.
 

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