I have a soarer with a 1jz, a couple of days my car started to feel a little slugish and today i noticed that i was idling between 500 & 600 rpm. My engine is stock so it has nothing to do with any upgrades. Can some one plz give me some insight on wat this might be

 

yea i think youre going to have to rebuild your motor, when motors start idling low, it means their losing compression...