Re: "Wastegate on 156 1.9JTD not opening
OK guys - mech reckons he has sorted it so this might help others. Got error code P0236 and he has changed the overboost valve.
The actuator didnt open - but when he took the two pipes that go into the overboost valve and joined them direct without the valve the actuator opened as normal.
So he has replaced the part (about £40) and only charged me a tenner labour (he's a mate fortunately!).
Anyway error message has gone (Motor system control failure) and car is running fine.
Fingers crossed thats cured it.