Quote:
Originally posted by Murphyslaw@Oct 31 2004, 07:25 PM
My e39 540 Auto continues to stall, regardless of sensors and fuel filter being replaced. As I'm starting to lose faith in the reliability of the car, I thought I would ask if anyone here knows what it might be.
Symptoms:
Driving along, come up to a roundabout and occassionally when I go to pull away, I lose all power and the engine stalls. Put it into manual whilst it's coasting along and try to restart the engine, sometimes it fires up first time, other times it makes a horrid sound. The sound is hard to explain but it makes you cringe. It does not sound like metal rubbing on metal, more like the starter motor turning but nothing else firing up.
Other times, I am driving on the motorway (70mph - nothing extreme) and the car will start to jolt, almost like its starving itself of petrol. Try to tap the throttle and the revs drop even more dramatically (slows it down too, quite rapidly!!)
The sensor I have had replaced (that are relevant) is the Crankshaft position sensor. I have had it checked by 2 different garages, of which one was a $tealer, neither were able to get any errors off the ECU, clean. I have heard stories of the Camshaft position sensor fixing problems, but I do recall there being registrations of the fault code in the ECU.
HELP!  used
Iain
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Murphyslaw,
Is it missing / backfiring? How many miles are on the car? New spark plugs?
Over the weekend I had very similar symptoms like you are describing. I just got my car back this evening. Mine turned out to be the spark plugs. My mechanic suggests purchasing new plugs from the dealer instead of aftermarket. He had to do "replacements" of plugs he had initially installed for one BMW owner. I personally have never heard of owners having trouble with "quality" aftermarket plugs however, I do know my car is running 1000% better.
BTW -- how's the gas mileage? Poor?
Please let me know how this turns out.
Jim
