3.0 with rough idle

Vacuum leak can be ruled out. I hooked up a smoke machine to the brake booster line on the intake plenum while blocking of the throttle body intake. not a wisp of smoke leaked out.

I spoke with a mechanic familiar with the Mitsubishi V6's, his suggestion were computer, vac leak (especially where the intake runners meet the head), iac, throttle position sensor, coolant temp sensor.

I've tested or replaced everything except the coolant temp sensor, there appears to be 2 separate sensors, not sure what the rearward sensor is. http://www.mightyram50.net/vbulletin...id=27275&stc=1