1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

I installed E-fans on my 2001

Discussion in 'Tech Info' started by ScottyBoy, Jun 29, 2011.

Car Parts
  1. Mattn314

    Mattn314 TYF Newbie

    Posts:
    5
    Likes Received:
    0
    Joined:
    Jul 29, 2019
    Name:
    Matt
    Did the efan swap on my 01. Used factory 05 fans and harness had the comp tuned to run them. Both fans come on when I start the truck cold. Gets to 205 and sits never hotter but fans never go into high.. if I turn the ac the both kick on high. Is this normal operation for them?
     
  2. Mattn314

    Mattn314 TYF Newbie

    Posts:
    5
    Likes Received:
    0
    Joined:
    Jul 29, 2019
    Name:
    Matt
    I have a 01 and having issues the fan's come on low as soon as I start up and never goto high and gets to about 195 200.. they come on high when I turn the ac on.. is that how urs works with the swapx
     
    Last edited: Apr 14, 2020
  3. Mattn314

    Mattn314 TYF Newbie

    Posts:
    5
    Likes Received:
    0
    Joined:
    Jul 29, 2019
    Name:
    Matt
    What relay did u use.. I'm having issues. I used a factory relay 3604
     
  4. Rocket Man

    Rocket Man Build It Better Supporting Member

    Posts:
    13,995
    Likes Received:
    21,749
    Joined:
    Dec 25, 2014
    Location:
    Oregon
    Name:
    Mark
    You should send a PM to @ScottyBoy and ask him questions, he’s pretty much an expert on this.
     
  5. bottomline2000

    bottomline2000 Full Access Member

    Posts:
    1,706
    Likes Received:
    938
    Joined:
    Oct 21, 2009
    Location:
    Dallas, TX
    Name:
    Big G
    If you have constant fan on you will need to swap to an 0411 pcm. Had this problem on my tahoe. Some early pcm had an operating system that's not compatible and causes the constant fan on and both fans run on high if the ac is running regardless of engine temp. You will burn up relays in wire harness. I swap an 02 Cadillac Escalade into mine. Worked as expected since then.

    Sent from my SM-T387AA using Tapatalk
     
    treehan77 and Rocket Man like this.
  6. Rocket Man

    Rocket Man Build It Better Supporting Member

    Posts:
    13,995
    Likes Received:
    21,749
    Joined:
    Dec 25, 2014
    Location:
    Oregon
    Name:
    Mark
    Good info, I never heard of this until now.
     
    bottomline2000 likes this.

Share This Page