[V8] RPM sensor (was Mass Air Flow Sensor)

[Jeff Goldberg]

Swapping the RPM sensor with Reference Sensor solved my problem! The
sensors were a little dirty on the sides, but not the business end
from a distributor oil leak.  I cleaned them up and swapped
locations and connectors. The car is running great.

I checked the flywheel as well. '91 Audi still has all its teeth:)

I am a little curious as to the symptoms of a failing reference
sensor as this should now be my problem, however the car seems to
run fine and codes 4444.

Jeff  

-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On
Behalf Of dsaad at icehouse.net
Sent: Friday, March 03, 2006 2:07 PM
To: v8 at audifans.com
Subject: Re: [V8] Mass Air Flow Sensor

Are you having (or did you have) any starter problems?
If the 2111 code is real, your choices are the sensor, the wiring,
or the
flywheel ring gear teeth.

Hopefully it is just the sensor going bad, but code 2111 that gets
worse with
RPM is not a good sign. Temperature just complicates this, but as
others have
said, you might try swapping the two ignition sensors to debug.

Dave

Quoting Jeff Goldberg <jgoldberg at ntelos.net>:

> I've been told that the voltages are OK and that the important
fact
> is that they are responding to throttle.  My problem occurs at 75c
> and the car runs so bad it can't be driven.  It misses, won't rev,
> backfires and generally won't run.  I've tried running with ECT
and
> OXS unplugged with the same symptoms.  I have one code that
reoccurs
> 2111 - RPM sensor.  I cleared the codes yesterday and verified
4444
> with the engine running cold.  I checked them again while driving
as
> soon as it started to miss and found 2111 set again.  I too would
> like to try a known good MAF, but I believe it won't help.  It was
> suggested to swap the RPM and reference sensor.  I'm going to do
> that this weekend just for fun.  I am at loss for what to check
> next.  It amazes me that the car runs so well cold and I can
barely
> coax it home after it warms up.
>
> Jeff
>
>
> -----Original Message-----
> From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On
> Behalf Of John Dodd
> Sent: Thursday, March 02, 2006 11:13 PM
> To: v8 at audifans.com
> Subject: [V8] Mass Air Flow Sensor
>
> Jeff ,my MAF shows the same voltages as yours.
> Did you try to read the codes ?
> I'm curious if you even get the same code as me(mixture adaptation
> problem )
> My car idles poorly after warming up but only when in gear. Seems
to
> surge also.
> I bought a used MAF from a lister here but the problem has not
been
> solved. I wish I could try one that is good for sure.
> Please let me know if you find one that works and if it cures the
> issue.
> I've been frustrated now for 2 months.
> At one time there was a talk about having(like a group buy) a pool
> of
> sensors that can be send from person to person to help in
> troubleshooting.
>
>
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