Not sure it would have to be a carb issue... As Howard mentioned months ago, if the car still has the computer controls for the carb in place then everything else in that system has to be correct.... Howard is a lot more knowledgeable on that stuff then me, I've never had good luck with that system and usually done away with it and either gone back to a regular carb or gone to a more modern EFI system. These in-between years when cars had the partial electronic controls and hadn't quite progressed to electronic systems that work quite well have always been "problem children" for me!!!!