Re: a MINOR tqc problem...

[raf40@oes.amdahl.com (Richard Funnell)]

The fast idle could be a problem with the auxiliary air regulator on the
back of the engine.  This device is supposed to increase the idle speed
when the engine is cold.  After a few years, they typically stick inside
and stop working at all.  When this happens, the idle is sometimes turned
up to make it idle OK when cold.  If this is the case, it will idle too
high once it warms up.

No ideas on the pulsing.  I assume you aren't seeing the infamous 4000 rpm
cutoff, which will cause the engine to die totally around 4000 rpm, under
load or not, and then operate fine once rpms have dropped.  Could this be
what you're getting?  Let us know, because if it is there are a bunch of
things that can cause it.


>At 01:37 PM 1/29/96 -0500, you wrote:
>
>>WHAT WAS I THINKING??????
>
>The same thing I was thinking when I bought Bruce Hochuli's TQC.  It's a
>beautiful car; he's put a ton (I mean a ton) of money and efoort into it;
>BUT it too has a minor problem -- dramatic "pulsing" (fuel starved?) in the
>3k to 4k RPM range under load.  Any Ideas?  BTW, his mechanic thought it was
>positively the frequency valve.  Put one from a 5kt in... The TQC ran
>beautifully during the test drive and for the next 5 hours of driving up I5.
>
>Went to turn it off, and it was idling at 2000 RPM.  The next morning, the
>3k-4k RPM drama began.  Any ideas?  Anyone?  It's too butt cold here in
>Portland (14 deg. F / -5 deg. F with windchill) to work on it in an unheated
>garage, so I haven't started into it yet.
>
>Are the frequency valves in these cars unique to the TQC?
>
>Thanks again Brian and all that helped me in my TQC search.  Wouldn't you
>know, an '83 TQC appeared for sale in the Oregonian the day I flew down to
>California!
>
>Regards,
>
>John Karasaki
>
>The Karasaki's, proud owners of AUDI automobiles
>
>1981 Coupe
>1982 TQC
>1984 5000SW
>1987 5000CST (for sale; Climate Control system now fixed! $3200)
>1990 V8

Richard Funnell,
San Jose, California
'83 urQ
'87 560 SL