Hi,
I wonder if anyone has any thoughts on a problem I'm having with my old-style (1995) VW Sharan.
Every now and again the engine dies but only for a very brief period, less than a second I'd say although I've not been timing it. The effect on the engine power is as if I'd turned the key off, the car slows very quickly, much more quickly than simply lifting my foot off the pedal. At the same time all of the electrical stuff *except the rev counter* stays completely normal. The rev counter is weird, when this happens the rev counter dies away to zero almost instantly, clearly it's not reading properly as the car is still in gear and moving so the engine must be rotating.
This fault is proving very difficult to diagnose as it only happens occasionally and only when it wants to. My guess is that if I can find out what the rev counter actually counts I'd be a long way to diagnosing it. Does anyone have any ideas?