I am trying to figure out a problem with a friends car. It is an E30
325i.

Symptoms :

Car will start and run for a bit (10 minutes or so) and then
randomly shut off. Doesn't do it every time but when it does it won't
restart for a bit. When it shuts off, there is no power to the fuel
pump and no spark. I have already checked the motronic relay and it is
good. Also get power to the relay to operate it. As I said, once the
car has sat for a bit, it will fire right back up. Any ideas???

Fuel pump relay?

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Thought about it but no spark either...

On Thu, 18 Jan 2007 16:55:29 +0000, John Burns
<john (AT) unixnerd (DOT) demon.co.uk> wrote:

"Psycho" <psycho (AT) tbcia (DOT) net> wrote

Is it possible E30s stop spark via Motronic unit if the fuel pump doesn't
run? Kinda like a couple of "chained" relays that a break in one prevents
further operations.

Bill in Omaha
'86 535i

I am going to try to run the owner down tomorrow and see if I can't
get an hour or so with the car and a meter. I believe I can track this
down if I can just get a little peace and quiet to do it. Really nice
car, it started as a MINT 87 318 and now sports the drivetrain (engine
to rear wheels) and suspension of an 87 325is. Real shock to the Honda
crowd around here... Ever wonder how fast an E30 can be stripped?
Trust me, 3 guys from New York can suprise you. Stripped to the bare
frame in under an hour, even the wiring harnesses and fuel tank...