hello everyone i need help for my 1994 cadillac sts seville, i had some issues with my idle control unit last year it got replaced and all was fine, out of the blue it starts the high idle again and then for no reason for two days i can't start it, finally it starts but as i am driving the check engine light comes on and the car shifts down and this just keeps go on back and forth any help would be nice i just can't afford a new car right now.
Pete
Pete