Help Needed desperately 156 2.4JTD Management problem
Yesterday halfway home (after about 12 miles) I performed a high speed overtake of three vehicles and the car was running like a dream. Then I caught up to some slower vehicles and eased up, and then the car appeared to go into limp mode or similar - totally gutless and won't rev freely. Took it to my local mechanic who ran diagnostics which indicated turbo pressure boost fault (or something similar) anyway we went round checking various pressure switches and hoses all appeared to be working OK. He thought it could be the turbo (which I had rebuilt last year). So I took it round to the guy who rebuilt it (and had also fitted the engine at the same time). I 'phoned him today and although he hasn't had a chance to look at it properly, he doesn't think the driving symptoms indicated a turbo fault. He thinks it's an electrical management fault. Since I've had the car, when I've booted it hard, sometimes the engine management system warning has come up , sometimes with a slight drop of power for a moment and sometimes able to drive through it. I've had three different diagnostics run on it (one with a specific Alfa connection) all just coming up with the boost pressure message.
Anyone have any answers or ideas? this appears to have baffled three different garages (and me) now.
I go on holiday in just over a week and am desperate to sort it.