My 1999 Galaxy 2.3 (manual) has recently cut out completely twice. The first time, it cut out completely, and wouldn't restart. I had it taken to a garage who looked at the diagnostic and it said there was nothing wrong. They then restarted it fine (and I felt stupid). So, I took it away and drove it a while and it then did it again - driving along and the engine just cut out. Stopped roadside, won't restart. Called the garage, they set out to meet me, try again, goes fine. Drove to garage, again, no faults found on diagnostics. Can anyone help with what might be wrong ?? Ta, Peter