RE: 90 Q temperature warning

[Aleksander Mierzwa <alex@matrix.com.pl>]

If the A/C control unit gets the "engine overheat" signal it will shut
off A/C. I'm not sure which sensor controls the coolant warning lamp on
the 90Q, but I think this is the multi-function sensor (the fat one with
3 or 4 wires). It is possible that the wire is shorted, but these
sensors go bad often :-(

Aleksander Mierzwa
Warsaw, Poland
mailto:alex@matrix.com.pl
87 Audi 5000CS turbo (mine)
88 Renault Medallion wagon (mom's)
91 mountain bike (just in case both cars broke at the same time :-)

> -----Original Message-----
> From:	Vlajko Jokic [SMTP:vlajko.jokic@sympatico.ca]
> Sent:	Friday, September 26, 1997 4:46 AM
> To:	audi
> Subject:	90 Q temperature warning
> 
> [...]
> 1. Temperature warning  at the multifunction display  (red signal)  is
> permanently ON (flashing), no matter what real engine temperature is. 
> This started to happen several days after I had a real problem with 
> engine temperature when cooling fan failed (connector at the fan had 
> a bad contact). 
> Also, a day before the temperature warning became permanent, 
> air-condition failed (clutch does not engage). Does anyone can 
> find some relationship between all these problems? 
> My temperature warning did show up once in the past, but the reason
> was
> low coolant level. However, coolant level is OK now, cooling fan is
> working (both speeds), engine thermostat opens at about 80 C,
> temperature
> gauge shows normal temperature (usually about 90 C, when engine is
> warm). 
> 
> 2. My cruise control recently quit. Any idea what to look for?
> 
> Thank you for your time.
> 
> V. Jokic
> Canada
> 88 90 Q