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help with overheating ?

Discussion in '308/328' started by fastfred, Sep 12, 2009.

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  1. fastfred

    fastfred Formula Junior

    Sep 17, 2004
    450
    antioch calif.
    Full Name:
    fred pedersen
    #1 fastfred, Sep 12, 2009
    every time i stop my 1988.5 328 GTS it over heats and i'm getting large amounts of foam coming out of the over-flow..when i'm driving the car and i keep moving its ok..anyone have any ideas whats going on? (where do i start looking?)all ready checked the fans, and there are no leaks,i checked the every day stuff.......
     
  2. Doug

    Doug Formula 3

    Nov 13, 2003
    1,473
    Louisville KY
    Full Name:
    Doug
    #2 Doug, Sep 12, 2009
    Air in the system. Bleed it from the top right hand side of the rad after the car gets warm. Do it after each drive and less and less air will come out. Use a shop rag when you open it because after the air comes out, hot coolant will fizzle out.
     
  3. magnum

    magnum Formula Junior

    Feb 21, 2008
    877
    Barcelona, Spain
    Full Name:
    Antonio
    #3 magnum, Sep 12, 2009
    Hi.
    I own a 308 but the problem is the same, I think -please, if I'm wrong, 328 guys correct me-. You must bleed the circuit on the radiator and on the thermostat -act on the bleeding screw-. Is the air in the circuit that causes the overflow. If you do a search for "bleed" in Fchat you will find how to proceed.
    Check it and tell us the result.
     
  4. fastfred

    fastfred Formula Junior

    Sep 17, 2004
    450
    antioch calif.
    Full Name:
    fred pedersen
    #4 fastfred, Sep 12, 2009
    so air in the line will make it over heat ?
     
  5. pippo

    pippo Formula 3

    Sep 25, 2005
    1,913
    FL
    Full Name:
    pippopotemus
    #5 pippo, Sep 12, 2009
    It can. Its a common set up ...seen on other cars, like alfa's. You must bleed /purge air out or it can interfere with proper liquid flow. Its like an air lock finding its way to the top of a passage, cuz air rises, or air pockets in more than one place, even. Air=bad news.
     
  6. fastfred

    fastfred Formula Junior

    Sep 17, 2004
    450
    antioch calif.
    Full Name:
    fred pedersen
    #6 fastfred, Sep 12, 2009
    thank you all for the help....we'll give it try(bleeding the air).....some one told me it could be a exhaust head leak letting air into the system? (the oil looks OK--no water there) when i stop the foam-fluid flows very fast out of the over flow...4 or 5 stops and the holding tank is empty......
     
  7. PT 328

    PT 328 F1 Rookie
    Silver Subscribed

    May 1, 2005
    4,008
    #7 PT 328, Sep 12, 2009
    It might not be a bad idea to replace the expansion tank cap while you are at it.
     
  8. CliffBeer

    CliffBeer Formula 3

    Apr 3, 2005
    2,198
    Seattle, Washington
    Full Name:
    Cliff
    #8 CliffBeer, Sep 12, 2009
    Perhaps check your fans again - they deteriorate over time and don't perform as well. I just rebuilt one of my twin rad fans and it performs MUCH better than the other one - a LOT more air movement and much quieter. Here's the link:

    http://www.panteraplace.com/page115.htm

    Yes, a Pantera uses the exact same fan (Lucas) as a 308.
     
  9. fastfred

    fastfred Formula Junior

    Sep 17, 2004
    450
    antioch calif.
    Full Name:
    fred pedersen
    #9 fastfred, Sep 13, 2009
    Last edited: Sep 13, 2009
    THANK YOU ALL for the ideas and yes it worked bleeding out the system,my good friend TONY TA did it for me and now no more overheating or fluid & foam coming out the over flow tank,and we also put a new cap on.... "thank you TONY"for doing the work for me!
     

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