I get codes p0507 and p1507 cleaned IAC and MAF it's on a '99 Legacy SUS sedan 4EAT.. I'm stumped.. i got tired of searching because none of the stuff I searched came with any real 100% hard fact of what causes these two codes..
The funny thing is when the idle gets rough (like running on 2 cylinders) you shut the car off and start it up again it runs OK but still has high idle (1,060-1,400 rpm) if you rev it a few times at idle with a high idle the car will go nuts and dip to 500 rpms then try to stabilize and try to idle at 700-800 rpm.
What should I check next?
The funny thing is when the idle gets rough (like running on 2 cylinders) you shut the car off and start it up again it runs OK but still has high idle (1,060-1,400 rpm) if you rev it a few times at idle with a high idle the car will go nuts and dip to 500 rpms then try to stabilize and try to idle at 700-800 rpm.
What should I check next?