Part throttle surging - 97 Intrepid 3.5
My Intrepid has started having a part throttle surge problem for the last couple days. The car's fine under heavy throttle or at idle, but starts to surge and miss if I'm cruising using light throttle. After running a search on here I went out and shot carb cleaner around the intake manifold gaskets and vacuum hoses while the car idled to see if I noticed any RPM changes...nothin'. (Don't worry, the motor was cold!)
The car has 110K on it and still runs great...I'd like to keep it a long time. In the last 30K miles it's had O2 sensors, plug wires, timing belt and new injectors, so I don't think those are suspect. I'm in the process of putting in new plugs, fuel and air filters and PCV valve.
Anybody else got any ideas what the problem could be? The computer's not throwing me any codes, and besides the surging she runs fine!