Results 1 to 5 of 5
  1. #1
    Junior Member
    Join Date
    Feb 2006
    Location
    GARDEN GROVE, CA
    Age
    50
    Posts
    95

    BLACK
    2002, CAMARO Z28

    cooling fans won't run on high

    I've had them programmed for a while with a predator to run cooler and all the sudden they wont run on high, only low. What should I check?

  2. #2
    Senior Member
    Join Date
    Jul 2005
    Location
    Jacksonville, FL
    Posts
    2,723
    It should be throwing a code if there was a fan/relay issue right? I've got mine set 194/185 for high speed and since it's cooler now they rarely run at high speed (I have LEDs and can see them come on). Since you have a Predator I'd look at real time data/ECT temp and make sure you're meeting the threshold for them to come on first.

  3. #3
    Junior Member
    Join Date
    Feb 2006
    Location
    GARDEN GROVE, CA
    Age
    50
    Posts
    95

    BLACK
    2002, CAMARO Z28

    On live data the ect's are 20 degree's higher than usual with the fans reprogrammed. The low fan setting do work though. I have unloaded and reloaded the predator tune a few times and nothing. I found online that the No. 2 relay controls the high speed setting. I'm gonna replace it.

  4. #4
    Senior Member
    Join Date
    Jul 2005
    Location
    Jacksonville, FL
    Posts
    2,723
    Don't know if it makes a difference, but maybe the temp settings are overlaping? Here's what mine are set to just for info:

    Fan 1 (low) - on 184/off 175
    Fan 2 (high) - on 194/off 185

    Still think you'd throw a code if it was a relay.

  5. #5
    Senior Member
    Join Date
    Jul 2005
    Location
    Jacksonville, FL
    Posts
    2,723
    More info on fan/relay operation here under diagnostics for P0481. www.gearchatter.com/viewtopic8997.php

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. NO high speed cooling fans
    By JaySleazy in forum General Help
    Replies: 3
    Last Post: 02-21-2011, 05:19 PM
  2. Ls1/lt1 cooling fans
    By QKRDTA3 in forum Parts Wanted / Trade
    Replies: 1
    Last Post: 07-03-2009, 05:58 AM
  3. cooling fans won't run on high
    By occamaroz in forum General Help
    Replies: 3
    Last Post: 01-11-2008, 03:14 PM
  4. cooling fans
    By 79Malibu in forum Stereo and Electronics
    Replies: 2
    Last Post: 04-27-2007, 07:00 PM
  5. 98 LS1 cooling fans?
    By tigressws6 in forum General Help
    Replies: 7
    Last Post: 03-19-2006, 02:55 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •