Hi everyone,
98 Grand Caravan Sport 121K+ having exactly the same problem, same dealership answers "DUH!!!", starting to think this is a VERY common problem for them that they dont want to admit, I'm at the point of driving around with a scan tool hooked up, will try the fist fix next time it occurs (will actually be a bit enjoyable, I'm sure everyone understands) thank you very very much for the information, and I will let you know the results,
thanks again
Bob