Thanks for the suggestions. I have always cycled the glow plugs til the light goes out for 2 or 3 times and the rough idle/stalling still happens. It seems the relay and circuit is working so likely there are some faulty glowplugs. The dieselgiant site seems really helpful for this. When I get some time this week I'll check the glow plug circuit. Thank goodness I don't have a 6 cylinder . . .

Don