• My car is overheating fan isn't kicking on
  • My car is overheating fan isn't kicking on
  • My car is overheating fan isn't kicking on
  • My car is overheating fan isn't kicking on

Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Results 1 to 9 of 9
  1. #1
    Member
    Join Date
    Feb 2009
    Location
    new york
    Posts
    39
    Post Thanks / Like
    Rides
    0

    Default My car is overheating fan isn't kicking on

    Well I just fixed my clicking noise by replacing the u-joints...but the first ride i took after taking to car off the jacks I noticed the low coolant dummy light on and the car was rising in temp. I opened the hood added a little bit of antifreeze. Then i took it for another ride and it was still getting hot...opened the hood and noticed the fan wasn't coming on...any suggestions?

  2. #2
    Member
    Join Date
    Feb 2009
    Location
    Broken Arrow, OK
    Posts
    232
    Post Thanks / Like
    Rides
    0

    Default

    just a guess , check the fan relay.

    my coolant light came on also.

    the over flow tank was empty, to be on the safe side I let it COOL and filled it at the tank on the fire wall. then I added some to the overflow.

    light never came back on.

  3. #3
    My car is overheating fan isn't kicking on Bob Chadwick's Avatar
    Join Date
    Aug 2001
    Location
    Norcross, Georgia, United Stat
    Posts
    3,200
    Post Thanks / Like
    Rides
    0

    Default

    What's hot? People complain about the C4 running hot all the time but the fan is not triggered to come on until the coolant reaches a temperature in the mid 230's or so. I'm sure someone will chime in with the exact number.
    ---edit---
    I did a quick search in the C4 section on Fan Temp and came up with some posts that might giove you some information. I don't know if the 87 is differerent but according to this post the fan doesn't come on until 234 degrees. Anoyther post I saw said 228 for the 88.

    http://www.corvetteactioncenter.com/...tml#post916934

    whats the normal temp range for my 1988 vette

  4. #4
    Member black_81_vette's Avatar
    Join Date
    Dec 2002
    Location
    wisconsin
    Posts
    295
    Post Thanks / Like
    Rides
    0

    Default

    You could wire the fan direct and see if its working, or change the the sensor in the head to turn the fan on sooner. I wired mine up to a adjustable switch with a thermocouple so I had controll of when the fan came on and off.

  5. #5
    Member bucket's Avatar
    Join Date
    Mar 2009
    Location
    los angeles
    Posts
    839
    Post Thanks / Like
    Rides
    0

    Default

    i also have an adjustable relay...end of problem
    factory fans dont come till around 210
    and it"s not "HOT" till it gets to 250...according to bowling green
    i dont accept this
    also use an additive in your coolant..watter wetter will lower your temp by 10 degrees

  6. #6
    Member
    Join Date
    Jan 2004
    Location
    Not in Kansa anymore
    Posts
    1,560
    Post Thanks / Like
    Rides
    0

    Default

    Quote Originally Posted by black_81_vette View Post
    change the the sensor in the head to turn the fan on sooner. I wired mine up to a adjustable switch with a thermocouple so I had controll of when the fan came on and off.
    Switch in drv side head only controls aux fan WHERE fitted. Main fan controlled by ECM from CTS signal.To change the on/off temps on main fan need chip reprogrammed unless to you do manual over ride

  7. #7
    hdcwagsvette
    Guest

    Default

    Most likely the relay. Take a look at it by the battery you will see right away if it is melted like mine was. After I replaced it the fan worked fine. It kicks on around 234 if I remember correctly.

  8. #8
    Member
    Join Date
    Dec 2001
    Location
    MI
    Posts
    482
    Post Thanks / Like
    Rides
    0

    Default

    This is out of the 1987 service manual.
    Fan on @ 226F controlled solely by the ECM.
    Fan on with A/C refrigerant pressure 233 psi.
    Fan off vehicle speed over 35mph coolant temp below 234F @ A/C pressure below 233psi.
    This also covers up to 1989 model years.

  9. #9
    Member bucket's Avatar
    Join Date
    Mar 2009
    Location
    los angeles
    Posts
    839
    Post Thanks / Like
    Rides
    0

    Default

    those numbers are , of course, factory correct and accurate...
    i dont subscribe to that theroy.
    so...opinions vary

Similar Threads

  1. C5 vs. C6 comparison--Coupes and Z06s
    By Gersh in forum C6 General Discussion
    Replies: 14
    Last Post: 07-07-08, 06:26 AM
  2. Question: Where could you envision a Callaway????
    By *89x2* in forum Callaway Corvette Forum
    Replies: 23
    Last Post: 06-08-08, 08:46 AM
  3. GS mystery Vette revealed
    By RAW in forum C4 Technical and Performance
    Replies: 119
    Last Post: 10-22-05, 01:11 AM

Posting Permissions

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