RE: <E28> Engine stumbling/hesitating ...

["Georg Taht" <tfam@xxxxxxxxxxx>]

Four things I would look at.

1. Is the air tube from air flow sensor to throttle body tight or does it
have any cracks?

2.  There is a relay that controls the fuel pump.  It sits in the fuse box
and may be bad.  This could explain the intermittent.

3.  Check for fuse connection that may have some corrosion.

4.  Check for loose connections at the coil or chaffing wires to the coil.

Georg
tfam@domain.elided
87 535is aka MOCK 5
94 325is

You wrote:
Date: Tue, 3 Oct 2000 07:59:25 -0400
From: khensley@domain.elided
Subject: <E28> Engine stumbling/hesitating ...

Hello, all!

I'm in a difficult situation with my 1985 535i.  I'm on the road during
the week, and the engine is running poorly at times.  This just
started as I was leaving home Sunday evening.

At any rpm, the engine will die, then in a moment, or few seconds,
it will pick up and run.  Sometimes its the whole engine,
sometimes it acts like a cylinder or 2 missing.  My initial reaction
is the ignition shutting off, when the whole engine dies, but that
doesn't explain a cylinder or 2 missing.

Another impression that it's related to the ignition is the black
smoke out the exhaust - it has fuel, but nothing to burn it.

Any ideas?

Thanks in advance,

...Kim Hensley
BMW CCA #16216

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