cutting out

[redshift]

Tonight I started the car and within a few seconds the motor cut out. After restarting a few times eventually got out of the car park; IN the next 1km it died and was restarted about 30 times or more, never running for more than 5 Secs at any one time; Once out of town evrything was normal and drove home with no further issues;

i) No warning lights all fuses ok

ii) every re-start was totally normal

iii) it was just like switching the ignition off

iv) The issue must be intermittent as the car bump started itself a  few times and restarted cleanly

I let the immobiliser set itself automatically and then disarmed it - no difference

i'm guessing at an intermittent fault with a sensor somewhere that is telling the ECU 'Don't Run!' ie CAM Position etc.

Sound familiar to anyone?

edit to add:

no CEL

NO COdes logged

Edited May 18, 2016 by redshift

[redshift]

Thinking logically about this, all the problems were during the warm up. Once up to temperature no issues.
So what is operative during warm up that could cause the motor to die and not be capable of giving any error codes?

I'm going to vote for the IAC Valve sticking?

[Barrykearley]

Also sometimes called the cold idle valve !! Worth a try for sure

[mike_sekinger]

I would have opted for the something electrical - ECU earth (earth on bellhousing).

 

[Winter]

Mike Sekinger's advice is well worth taking . . .

[Barrykearley]

Think @swindon_alan posted up a similar problem - if it's an earth issue you can test this out easily with a jump lead from the battery neg to the engine block

[mike_sekinger]

The ECU takes it's Earth from the bellhousing - this is part of the engine loom and is easily checked.  If this is the problem, then it will not be solved by a second Earth strap between the battery and the engine itself. 

[Barrykearley]

You are without doubt the font of all knowledge on these ?

[redshift]

Thanks for the suggestion Mike!

Havent had the chance to investigate further, have been working on that black art that is Bosch K-Jetronic MFi on the TVR all weekend