XU10 J4D/Z engine from 306s16/405mkII dies in N mode

[zejoker]

Hello!

I got an Citroën ZX -93 with the XU10 J4D/Z engine 2.0 16v 147hk/110kW same as used in:

Citroën Xantia I 2.0 16v
Peugeot 306 S16
Peugeot 405 mkII

Everything works perfect except when u put the gear in neutral, but you can have a gear on with the clutch / link depressed and then it runs on idle mode without shutting down. I cant start it from stationary mode, I have to roll on to start the big engine an it shuts down as soon i put the gear in neutral mode.

Have tried replacing the battery o the idle speed auxiliary air valve but nothing changed. It should be relative simple to debug this problem when it goes just fine until u release the clutch / link. So I can stand still with a gear on and prevent it from shutting down and run it on idle mode as long I have the clutch / link depressed. Btw sorry for my bad english and this car is imported into Sweden since it doesn't sell here so a debug on a car service shop could get expensive. So anyone have experience with this engine or similar problems or just any clue what it is ? Thanks in advance and have a nice summer !