V8 Quattro fault codes (RPM Sensor replacement)

[Peter Sward <Peter.Sward@Compaq.com>]

Did you replace the rpm sensor? I'm getting a persistent 2111 and an occasional
stumble when I'm driving and I had my mechanic look at replacing the sensor.
Not only is it expensive ($150) but it seems inaccesible to. You can barely see
the
sensor from the bottom of the car and it's behind a heatshield that's behind the

header pipe. Book time for replacing the sensor is 4 hours. Since a number of
people
on the list seem to have replaced the sensor(s) on the V8Q, any hints on how to
do it?

/Peter


"Graydon D. Stuckey" wrote:

> > I got 2111 RPM sensor and I belive that this would account for the loss of
> > power.
>
> I don't know if it can account for low power, but its behind the drivers
> side cylinder bank.  There are two identical(?) sensors there - one is the
> ignition reference sensor, and the other is the engine rpm sensor.  I'm
> about to change the reference sensor on mine, but I think since they are
> reported to be the same, and they seem to dislike the heat back there,
> I'll replace both anyway.  I also seem to remember someone saying that the
> 5KCSTQ sensors are nearly identical, so you might try those if you have
> access to a 5KCSTQ parts car.
>
> I'm not complaining - my V8 has been the most trouble-free car I have ever
> owned.   I don't mind a few little repairs like this when I can enjoy it
> for so long between repairs.
>
> Later,
> Graydon D. Stuckey
> '91 V8 Quattro 5-speed          '86 Mazda RX7 TII+2
> I have a new address for my webpage - no ads!  :-)
> http://elektro.cmhnet.org/~graydon/

--

Peter Sward
USG/Strategic Technical Support
Mail: SMURF::SWARD sward@zk3.dec.com
Phone: (603) 884-6138   FAX: 603-884-6424