OK, so the dealership had it running OK 3 weeks ago once the distributor was replaced? I'd still pull the cap and check the condition of the rotor and look at the condition of the cap yourself. Signs of arcing? Then I'd go the IAC route next. There's been some recent posts about problems with the ECU as well. While it may be a fuel problem, I suspect it is somewheres in the electrical system. Hopefully others more knowledgeable then myself will chime in here soon.

Eric W.

'89 Dodge Raider -- 3.0L V6, MT, SWB