This started happening a week ago: driving down the motorway the engine will work perfectly when cold, but once it reaches its normal temperature (about
91 degrees according to the gauge), it will misfire once very briefly, then continue as if nothing had happened. No warning lights appear.But after that if I let the revs drop below 1500 or so, the engine will simply stop, and all the warning lights come on ('ECM', the little engine picture, etc.)
Then it can't be restarted using the starter motor for at least ten minutes, although you can restart it by bump-starting and keep it running by keeping the revs high. The warning lights go out again when the engine's running.
Any ideas?
-- Roger