Fan Diagnostics

Discussion in 'General Discussion' started by srt8-in-largo, Jun 23, 2010.

  1. srt8-in-largo

    srt8-in-largo Full Access Member

    Messages:
    201
    Likes Received:
    0
    Joined:
    Nov 21, 2009
    Location:
    Largo,FL
    Can someone tell me the procedure... if there is one?

    I think Trinty f'ed something up. Settings are fine but NEITHER fan comes on.
     
  2. srt8-in-largo

    srt8-in-largo Full Access Member

    Messages:
    201
    Likes Received:
    0
    Joined:
    Nov 21, 2009
    Location:
    Largo,FL
    No diags... other than the builtin DTC circuit. If you have a problem in the cooling circuit you'll see a code.

    A Starscan can test some of this circuit, including your fan relays. I don't have Starscan so I had to do a DIY relay test... which showed all 3 of my fan relays being good. Both of my fan fuses were good too.

    I jumpered my fan relay to send power to the fan, and I could hear the fans clicking but they never came on. So... bad fans... both of them. I don't know of anybody else who had both go out within a day or so of each other but mine did.

    After installing a new fan assembly... all is good.


    EDIT: The reason why I thought Triniity did something is that my fans went out... both... within a week or so of programming for the first time. Everytime I the Trin writes a program I can hear my relays in the front fuse box being triggered. Idk why the Trin needs to mess with the relays but I thought there might be a connection... probably not.
     
    Last edited: Jun 25, 2010
  3. Quick

    Quick Mgmt. - I can't help you

    Messages:
    7,549
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    San Jose, CA
    Probably not. The Predator does the same thing when you write a tune file and a lot of people have been doing that a lot of times.
     
  4. 1bad4dr

    1bad4dr Mr. Meany

    Messages:
    19,670
    Likes Received:
    0
    Joined:
    Oct 10, 2007
    Location:
    Corn Country
    More than likely your low speed fan has been bad for quite some time, and you just recently lost the high speed... I know of at least a dozen peeps in the past two years where this has happened.
     
  5. srt8-in-largo

    srt8-in-largo Full Access Member

    Messages:
    201
    Likes Received:
    0
    Joined:
    Nov 21, 2009
    Location:
    Largo,FL
    The sweetest sound in the world right now is hearing these puppies fire up.

    It seemed awfully coincidental for the fan to go out almost as soon as I started using DSP. I'm only at 67k miles but I guess its known that stock fan motors are pretty weak. I got a "TYC" unit from Rockauto... we'll see how this one holds up.

    And yeah... I shouldn't have said 1 day. I did notice something funny going on with temps creeping up.. this was a week prior to when I finally noticed that both were out. I posted on the DSP forum too to see what people there had to say... I should check to see if anyone replied. Probably not lol, especially not anyone from Diablosport.

    Btw, I'm now THOROUGHLY impressed with the SRT cooling system, at least the radiator. I drove in 90 degree heat for two days with zero fans... yet it was still able to keep my ECT between 200 to 220F. This is quite a radiator!

    EDIT: That was with feathering the throttle, keeping the AC off, and occasionally running the heat when temps were going up.
     
  6. Quick

    Quick Mgmt. - I can't help you

    Messages:
    7,549
    Likes Received:
    0
    Joined:
    Nov 6, 2007
    Location:
    San Jose, CA
    In one of the earliest SRT Engineer Chats the SRT engineers said that the cooling system is pretty much bullet proof. Tested in the desert in 100+ degree heat at continuous WOT running with no problems (or something like that).