I sprayed carb cleaner into the IAC bleed hole and around the butterfly, then replaced plugs and wires, coolant temperature sensor. Runs smooth for 15-20 seconds on a cold morning, then rough high idle about 1300 - 1600. It seems to stick in one place or another, occasionally as high as 2500-3000 rpm and will increase when I push in the clutch to shift, even though I already took my foot of the gas. This afternoon it was warm so I turned on the AC on the way home and the idle dropped to normal (1000 with AC on) and smoothed out. I get vacuum to the orifice in the EGR vacuum line, but at idle no vacuum through the EGR solenoid. Could this be the problem? When should I be getting vacuum to the EGR valve and how can I check this out? I don't want to just keep buying parts til I get lucky.
Wednesday, February 21st, 2007 AT 6:31 PM