Missing Parts

Ti Kan ti at amb.org
Tue Nov 13 11:05:34 EST 2001


Kate FitchGerald writes:
> Well the Haynes manual claims to check the Auxillary
> air valve and the warm up regulator.  Well, after
> looking under the hood of my car, may car doesn't seem
> to have either?

The auxiliary air regulator and the warm-up regulator (also known
as control pressure regulator) are not used on your car.  Only CIS
cars have them.  You have CIS-E.  On CIS-E the ISV serves the
function of the AAG, and the WUR (cold enrichment) is served by the
differential pressure regulator on the fuel distributor under ECU
control.

BTW is yours a Canadian car?  There were no 2.2 I5 4000S sedans
offered in the US market.

> I need more literature on my car since the
> Haynes AUDI 4000 manual for my 1987 Sedan doesn't seem
> to help.  For instance, in one senstance, the Haynes
> mentions the (ISV), but, I have no clue on how it
> works, or how to test it.  How do you test the ISV to
> insure it is working correctly?

This is why Haynes is only marginally useful.  The info therein
pertains mostly to older models.  My copy of Haynes has a section
in the back that talks about changes for 1983+ models with little
real information.

> I'll probably have to go find the chapter for the fuel
> control system in a BENTLEY manual somewhere. I really
> want to figure this out.

Yes, you need the Bentley.  BTW, the chapter on fuel injection
is pretty thick.

-Ti
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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