this is more out of curiosity than an actual effort to fix this, this engine is a lost cause...
After driving home today, I pulled in the driveway and put it in park. Idle rose a bit, like it normally does, then ran rough for a second or two, ran perfectly fine after that and threw a cel. Scan tool said "P0507- Idle air control RPM higher than expected." Ive never seen this before, even in the shop I work in. What could cause this?
Should mention this is an EJ22E swap into a car that origionally had an EJ25D. I had to swap the IAC valve from the 2.5 to the 2.2 as it was not working on the 2.2. Apart from that in the beginning, this is the first non-emissions related code its thrown. Ill just assume that this is a funky thing that happens by running an engine in a car whos ecu wasnt mapped out for that engine.
Thanks for any input