I have a 97 catera that has been a nightmare. Trans replaced 6 mo. ago, coolant leak behind engine 2 mo. ago, air compressor went this past fri. and now the car is sitting on the side of the road. It started idling rough this morning, progressed to rough acceleration. Then finally died. Called Nolan Cadillac yet again. ( I think we pay their electric bills) Any help would be appreciated.