Yeah Geo, I did call them. They pretty much made it seem like if it wasn't the problem now, it will be later. So if nothing else is suggested, I'll probably end up sending my ECU in to them.

Thanks again for the info.

Could it be that the timing belt is off by a tooth? but if this was the case, why would it idle at 750 "sometimes"?

Also, could a blown head gasket cause a high idle?

1989 Dodge Raider - V6 - Manual - 4x4 - AC - 31" Tires