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06-27-2016, 01:51 AM
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#1 |
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Registered User
Join Date: Dec 2011
Location: visalia ca
Posts: 1,480
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ls fan 2 issue
My fan #2 is not keeping a constant ground he keeps pulsing fan 1# is fine any suggestions thank you
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06-27-2016, 06:57 AM
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#2 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,616
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Re: ls fan 2 issue
I had problems with my fan 2 as well..turned out to be that the truck ecm was only designed to run one fan..they had to redo something in the program to make it run 2 fans..
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06-27-2016, 02:39 PM
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#3 |
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Registered User
Join Date: May 2005
Location: Tallahassee Fl
Posts: 773
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Re: ls fan 2 issue
Yep..... give that man a cigar, said early tunes missed that. Apparently they are using an AC control signal that is not constant
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06-27-2016, 04:09 PM
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#4 |
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Registered User
Join Date: Dec 2011
Location: visalia ca
Posts: 1,480
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Re: ls fan 2 issue
I told the guy who did my harness I would eventually put ac that's most likely why its doing it? Will I be ok if I ran the second fan to fan 1 wire? If I understand correctly its just a negative wire
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06-27-2016, 09:31 PM
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#5 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,118
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Re: ls fan 2 issue
Its a relay trigger ground, so you can wire in a second fan relay and have it triggered by the fan 1wire.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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06-28-2016, 09:31 AM
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#6 |
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Registered User
Join Date: Dec 2011
Location: visalia ca
Posts: 1,480
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Re: ls fan 2 issue
Thank you for the responses I just wanted to make sure I don't screw anything up in going to run it like that till I get the ac hooked up
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