The superdo's hasn't been running so well lately. Here's some background: 1995 legacy l 2.2 mt 240,000 on the car and i'm told about 150,000 on the engine (bought it from a shady mechanic..). The car has trouble idling, usually a low, rough idle (to the point of stalling a few times) and a surging idle. This winter it threw a MIL for the upstream O2 sensor. I replaced the sensor with a bosch universal sensor, maybe not the best choice. A few weeks ago it threw another MIL for cat below efficiency. At this point i'm thinking the cat is bad so i ordered a bosal replacement. While it is shipping, i figured it would clean out the throttle body and the idle air control valve in case those were the reasons for the idle problems. Pulled off the iacv and was very surprised to see there was no lower port on the valve. Hard to describe but check out the pictures.
[SEE REPOST BELOW FOR PICS]
I'm not sure what to make of this, perhaps someone else has some insight. I certainly don't think it's a major issue since the car was running fine previously. Could the intake manifold be from another engine/model? How would you recommend I clean this iacv? Lastly, any suggestions as to the cause of the idle issues would be greatly appreciated!!!! Thanks!
Edited by J_S, 05 May 2011 - 01:41 PM.