[200q20v] Re: overheat only in stop and go

Ti Kan ti at amb.org
Sun Jul 15 21:34:31 EDT 2001

Chris Covington writes:
> Picked up the 200q20v again after not driving it for awhile, took it to
> Boston and all was well until I hit traffic at the 84/90 intersection and
> then again outside the tollbooths around the city.  In traffic, the car's
> water temp would rise to about the 1 bar away from the top of the heat
> range and the red thermometer light would go off on the Autocheck.  It
> never went any higher temp-wise, probably helped by my blasting the heat.
> Could this be the rad. fan or the thermo, etc.?  How can I determine?  The
> problem never happens during non-city driving.

Check your coolant level to make sure it's above the minimum mark.

Does your radiator fan come on when the temperature rises?  If not,
that's the cause of your problem.  Possible culprits in that department
are the thermoswitch that control tha fan, the fan relay, or the fan

If the radiator fan comes on but the temperature does not drop, then
you either have a bad thermostat or a clogged radiator.

01 S4 2.7 biturbo quattro
84 5000S 2.1 turbo
80 4000 2.0
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Research Laboratories, Sunnyvale, CA. USA
  ///    ti at amb.org
 //////  http://www.amb.org/ti/

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