[perrytime]

Has anyone solved the rough idle on start after sitting 10-20 minutes hot? I have new plugs, wires, coils. Van runs great all other times. If I give it gas, the engine is still rough even at 1500-2000 rpm, so I doubt a little vacuum leak that cause rough idle could corrupt engine run at that speed. With key on, before starting, TPS is fine, air & coolant temp seem reasonable. AFter starting, the air flow reads 1.12lb/min, which seems high given the idle is about 6-700rpm. After several seconds it smooths out. At smooth idle, air flow is .88lb/min. A normal restart the engine rpm jumps to 1200 (air flow 1.12lb/min) then settles to 800 idle and .88lb/min. I guess it could be IAC, but I cleaned it all up and no change. No pending codes.
I just watched it and it almost seemed like the engine smoothed out as air temp dopped below 130, it starts out at 135-140. its a 80deg day, seems reasonable. 180,000 miles on van. I cleaned EGR ports just 20,000 miles ago.