mc1 200tqa oil pressure problem?

[Ado Sigal]

Also inspect the oil pressure release plunger, seat and spring.

Ado



Just a couple of comments:
Depending on the oil used to rebuild the motor, it could be normal except for 
the sensor.
Or the pick up screen could be partially plugged by varnish.

I think there are two sensors: one below 1.x bar and the other for above 3.x 
bar.
I suspect his sender, or its wiring.
There are many schools of thought in oil...................
Thin oil is (and was in my rebuilt 200 20V avant) used for initial start up 
to make sure it flows to every nook and cranny.  I saw 1 bar at idle and 3 bar 
max.  I didn't dare go over 4000 RPM.
I changed that oil and the Mann OEM filter out for another Mann OEM and 
10/40W oil and I had 5 bar at highway speeds and 2-3 bar at idle.
Interestingly, Porsches have a 1bar per 1000 RPM guideline to watch for on 
their huge dials and gauges
HTH - Scott by BOSTON

> From: Huw Powell <>
> Subject: Re: mc1 200tqa oil pressure problem?
> To: Robert Beatty <beattyr2003 at earthlink.net>
> Cc: quattro at audifans.com
> Message-ID: <400DE7F2.2080109 at humanspeakers.com>
> Content-Type: text/plain; charset=us-ascii; format=flowed
> 
> > Just finished putting a motor in my 89 200tqa and i am getting a low oil
> > pressure warning at over 3000 rpm.  While over 3k rpm, I have about 3bar on
> > the dash gauge, i dont remember what it should be at higher rpms though.  I
> > have switched the sensor out with another one I had, and same problem.
> 
> > I know common reasons for low oil pressure are bad oil pump and worn main
> > bearings, but these problems are almost unheard of in an I5 from what I
> >