Re: '84 4000S, 4 cyl: normal operating temp and oil pressure

[ti@amb.org (Ti Kan)]

Andrei Kogan writes:
> If you own a 4-cyl 4000S automatic, please let me know what the typical
> behavior of your temp semnsors is. My water temp sensor stays right in the
> middle when cruising (at 75-80 mph) but goes way up, to about 3/4 of the
> full scale when idle, which is the point at which  the radiator fan comes
> on. In stop-n-go traffic, it even climbs a bit above the second highest
> mark. Does this sound high? I recently drove in a friend's CGT of the same
> year and in that car, the temp gauge always reads in the lower portion of
> the scale.  My oil temp reaches about 130 when cruising and is lower when
> idling. 

Your readings are about right.  Does the Coupe GT have an aftermarket
thermostats that's rated at a lower opening temperature?  If so then
that might explain the lower temps.

> BTW, Iam also curious about the oil pressure --- I noticed that over the
> last six months or so the gauge  readings  (warm engine, cruising at 80
> pmh) have decreased from about 4.5 , which is what they were when I bought
> the car 4 years ago, to about 3.8 -- 4.0 on average. I have about 280,000
> mi on this car.

Check your oil level.  If your engine oil level is fine then I wouldn't
worry about the change in pressure.  It may be caused by different oil
viscosities...

-Ti
96 A4 2.8 quattro
84 5000S 2.1 turbo
80 4000 2.0
-- 
    ///  Ti Kan                Vorsprung durch Technik
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