740 - random stalling

For some unexplained reason my '91 740 wagon has quit on me twice in the
last month. Both times I was coasting to a stop to a red light and then all
of the dash board lights came on and the car quit. I couldn't immediately
restart it (engine cranked-over but didn't start). After a few minutes it
started and ran without a problem - until it stalled again three weeks after
the first time.

Any ideas?

Thanks

 

Hi "mgb",

I've had that. Check for loose vacuum hose.

Good Luck.
Andy I.


: For some unexplained reason my '91 740 wagon has quit on me twice in the
: last month. Both times I was coasting to a stop to a red light and then
all
: of the dash board lights came on and the car quit. I couldn't immediately
: restart it (engine cranked-over but didn't start). After a few minutes it
: started and ran without a problem - until it stalled again three weeks
after
: the first time.
:
: Any ideas?
:
: Thanks
:
:

 

Well it's new enough that the wiring should be fine. Could be the fuel
pump relay, also does the tach needle drop like a rock, or does it coast
down with RPM of the engine?

 

Not sure about the tach - didn't notice. I'll watch that if/when this
happens again.

 

If it drops like a rock, then you have an electrical problem cutting off
the ignition, if it coasts down, then you have a fuel problem.

 

Or it could be the fuel pump going out as I just had happen. The shop I use
was able to put a pressure gauge on the fuel line to see if the pump was
pumping with enough pressure and mine wasn't so I replaced it with a new
one.
Bruce