93 LTI, 69,000 Mi, had a new optispark installed last summer, although only about 5k on it since then. Ever since then the car has had an irregular idle, either too high (1200) or too low (500), seems to alternate at random - when you start it up you will know....sometimes it even behaves normally.
It doesn't go away when the car warms up or anything. I'm betting it has to do with how they put it back together after the optispark. Any ideas on this? I'm thinking a vaccum leak, don't know but I don't want to take apart the opti again if I don't have to.