E39 525i - engine cuts off at traffic lights

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   I am in desperate need of assistance. 
Driving back from France today I started to notice that "something" was not quite right.
For the 1st time ever, at the Calais Eurotunnel terminal, the engine did not start on the first turn of the ignition key.
Fortunately, no problems when leaving the terminal.
However at one roundabout (A243) the accelerator did not respond immediately.
From there, things got worse. The last 20 miles the engine would cut off at traffic lights or idle.
I switched to S-mode on the automatic gearbox and it seemed to resolve the issue, up until the last 5 miles where the car cut off twice in Putney, including inthe middle of a right turn at a dangerous junction.
The car past its MOT 2 weeks ago, drove fine from London to Bourges France and back to Calais, where the problem started.

What should I do now?

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agagneux Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 01 Sep 2009 Location: London Status: Offline Points: 14	Post Options Post Reply Quote agagneux Report Post Thanks(0) Quote Reply Topic: E39 525i - engine cuts off at traffic lights Posted: 01 Sep 2009 at 10:04pm
	I am in desperate need of assistance. Driving back from France today I started to notice that "something" was not quite right. For the 1st time ever, at the Calais Eurotunnel terminal, the engine did not start on the first turn of the ignition key. Fortunately, no problems when leaving the terminal. However at one roundabout (A243) the accelerator did not respond immediately. From there, things got worse. The last 20 miles the engine would cut off at traffic lights or idle. I switched to S-mode on the automatic gearbox and it seemed to resolve the issue, up until the last 5 miles where the car cut off twice in Putney, including inthe middle of a right turn at a dangerous junction. The car past its MOT 2 weeks ago, drove fine from London to Bourges France and back to Calais, where the problem started. What should I do now?

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Cabrio Members Profile Send Private Message Find Members Posts Add to Buddy List Register Chair E30 Register & Competition Secretary Joined: 24 Aug 2006 Location: United Kingdom Status: Offline Points: 6625	Post Options Post Reply Quote Cabrio Report Post Thanks(0) Quote Reply Posted: 02 Sep 2009 at 9:25am
	Any air leaks evident - also is the fuel okay - fill up and see what it does - may need a filter and then try again before look at expensive stuff
	E30 Register joint coordinator - Competition Secretary - Contact name Neil for PM and Email - cabrio_e30@yahoo.co.uk - be aware addicted to E numbers

agagneux Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 01 Sep 2009 Location: London Status: Offline Points: 14	Post Options Post Reply Quote agagneux Report Post Thanks(0) Quote Reply Posted: 02 Sep 2009 at 9:38am
	Thanks, is it worth using any additive to the fuel to try to clean it?

agagneux Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 01 Sep 2009 Location: London Status: Offline Points: 14	Post Options Post Reply Quote agagneux Report Post Thanks(0) Quote Reply Posted: 02 Sep 2009 at 11:35am
	Am taking car next week to http://www.germanmotor.co.uk/contact.htm Fingers crossed

Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest Group	Post Options Post Reply Quote Guests Thanks(0) Quote Reply Posted: 06 Sep 2009 at 4:11pm
	Any warning messages evident?

agagneux Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 01 Sep 2009 Location: London Status: Offline Points: 14	Post Options Post Reply Quote agagneux Report Post Thanks(0) Quote Reply Posted: 09 Sep 2009 at 11:20pm
	there was no message. it would simply cut off when idle or when accelerating from idle. Took it to the specialist, diagnostics identified sensor problems. 2 sensors were replaced. Seems to have done the trick.