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radiator cooling fan testing

Discussion in '308/328' started by TadTV, Mar 31, 2014.

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  1. TadTV

    TadTV Rookie

    Sep 12, 2005
    28
    #1 TadTV, Mar 31, 2014
    During a smog check, my fans failed to come on and a bunch of coolant came out the overflow tube. I noticed on drive home the fans were not on but if I kept moving the temp would go down to normal. How do I start to trouble shoot fans? Which relay is it? Are there wire connectors under the passenger footwell. I am also having an occasional starter click without turning issue and had an ABS relay issue. Are all these in the same area-footwell? I replaced the ignition switch hoping that was the problem but starter click still there. So where to start with fans- (after I put 12v directly to them) Thanks all.
     
  2. Crowndog

    Crowndog F1 Veteran

    Jul 16, 2011
    7,042
    Fairfield,Pa
    Full Name:
    Robert
    #2 Crowndog, Mar 31, 2014
    Please indicate year and model of your car so we can help you out. It could be as simple as a fan switch in the radiator or as complex as a bad fuse/relay board. So, to narrow things some we need that info.


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  3. Crowndog

    Crowndog F1 Veteran

    Jul 16, 2011
    7,042
    Fairfield,Pa
    Full Name:
    Robert
    #3 Crowndog, Mar 31, 2014




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  4. TadTV

    TadTV Rookie

    Sep 12, 2005
    28
    #4 TadTV, Mar 31, 2014
    Whoops forgot that info. It's a 1989 328GTS
     
  5. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,574
    San Carlos, CA
    Full Name:
    Mitchell Le
    #5 yelcab, Mar 31, 2014
    Check fuse 20
    Check relays g and i.

    Then put power to the fan to see if it runs.

    Then check the thermo switch.
     
  6. Crowndog

    Crowndog F1 Veteran

    Jul 16, 2011
    7,042
    Fairfield,Pa
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    Robert
    #6 Crowndog, Mar 31, 2014
    With all the other symptoms you list and after doing the above checks you might sniff around the fuse/relay boards and look for issues. I do not have a 328 but I think there are some threads about these boards having issues.
     
  7. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,574
    San Carlos, CA
    Full Name:
    Mitchell Le
    #7 yelcab, Mar 31, 2014
    Not on a 89 328. It has the best design of all.
     
  8. Crowndog

    Crowndog F1 Veteran

    Jul 16, 2011
    7,042
    Fairfield,Pa
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    Robert
    #8 Crowndog, Mar 31, 2014
    Well then, cross that off. Thanks for the correction.
     

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