From: Brett Anderson [bretta@bestweb.net]
Sent: Donnerstag, 11. Februar 1999 03:12
To: Horst Apfelthaler
Subject: Re: cylinder #1 (or #6?) sensor on E30

Horst, the sensor is not needed for correct running.

It is on number 6 cylinder and is used by the DME as a signal for the
sequential fuel injection.  Without a signal from this sensor, the DME
defaults to semi sequential fuel injector firing.  There is no
noticeable difference between the two.  Sequential uses a little less
fuel and will give a tiny power increase.



Brett Anderson
BMW and ASE master technician
http://frontpage.bestweb.net/~bretta

Please include all correspondence when replying
to avoid confusion - Thank you

-----Original Message-----
From: Horst Apfelthaler <Horst.Apfelthaler@digital.com>
To: 'bretta@bestweb.net' <bretta@bestweb.net>
Date: Wednesday, February 10, 1999 9:08 AM
Subject: cylinder #1 (or #6?) sensor on E30


>Hello Brett,
>
>sorry for contacting you direct, but it seems that the digest has no
anwer.
>
>I'm wondering what the cylinder #1 (or was it #6, I don't remember)
sensor
>on my '88 325i E30 engine is
>used for. I read a couple of articles but did not find the solution.
>Car has Motronic 1.1 ...153 ECU. The ETM says that this sensor goes
into the
>ECU.
>
>Fact is that on my engine the sensor was not connected (due to a bad
>replaced ignition wire).
>The engine started normal, ran and accelerated normal (like it is for a
5cyl
>engine - #6 had a burnt valve)
>
>What is this sensor used for, what will happen when not installed?
>
>I'm going to rebuild the head and will install it with the ECU on my
eta
>engine.
>
>Any help available
>
>Regards
>
>Horst from Austria
>
>'80 323i with eta power
>'89 320iC
>'94 A4 Tdi
>
>
>