I have a '87 vanagon syncro with a '91 Legacy EJ22. Van idle after warming up will keep rising to 2,000 rpm. I cleaned the MAF, I IACV, and intake along with the PCV valve - they were all fine. I understand that a bad temp sender can do this and also vacuum leaks. I did remove the intake and reroute air cleaner but this should not have affected the idle as it started to display this high idle prior to this. This engine was filthy and neglected so I have been detailing engine bay and using a garden sprayer micro bursting water here and there to clean up engine grease and dirt deposits, looks great, but perhaps I dislodged a vac line or other - any thoughts on this issue? Thanks!
