E39 525 2001 dies upon start intermittently

Hi,

This is the first time I'm posting a question here and english is not
my native language, so please beare with me.

I have a 2001, 525i which has been working flawlessly up until now.
Recently I've started to experience the following problem.

Sometimes when I start the engine, whenever I try to press the gas
pedal it dies. If I on the other hand just leave it running on idle,
there seems to be a slight variation in the RPM, but the engine does
not stop. However, if I press the gas pedal it stops immedeately.

If I leave the car overnight, the problem is gone, and when I'm driving
after a successfull start, there does not seem to be any problem with
the power of the engine.

This has happened three times during a two week period, but as far as I
remember, only when the motor has been warm. I haven't seen this when I
have made a cold start.

Anyone got some ideas?

Best Regards
//Jan Persson

> wrote
> I have a 2001, 525i which has been working flawlessly up until now.
> Recently I've started to experience the following problem.
>
> Sometimes when I start the engine, whenever I try to press the gas
> pedal it dies. If I on the other hand just leave it running on idle,
> there seems to be a slight variation in the RPM, but the engine does
> not stop. However, if I press the gas pedal it stops immedeately.
>
> If I leave the car overnight, the problem is gone, and when I'm driving
> after a successfull start, there does not seem to be any problem with
> the power of the engine.
>
> This has happened three times during a two week period, but as far as I
> remember, only when the motor has been warm. I haven't seen this when I
> have made a cold start.

Crankcase position sensor?

Floyd

Hi,

That was exactly my repairmans educated guess when I described my
problems for him over the phone.

He will take a closer look at the car next friday, so we will see then.

Thanks for the help.

Best Regards
//Jan Persson