Quote
Don't mess with the idle screw. Find the problem that's causing the idle to go out of adjustment..... which is not the idle screw.

Frank


If we dont know the history of the vehicle (and we dont) it certainly could be the only problem. It cost nothing to check.
Quote

When my engine is cold it immediatly revs to approx 2000rpms on startup it then gradualy reduces to approx 1000 when hot. I'm pretty sure it didn't do this before I replaced the iac. The new iac acts completely normal and lowers the rpm in steps but doesnt't bring it completely down. I have been getting a code for bad intake air temp but it tests ok. Any thoughts???




-remove the cap and turn the idle adjust screw clockwize. count your turning degrees because you might want to put it back where it was.
-the screw you are looking for is down inside a hole about 2 inches.
-best to read the book while doing this

1989 5 door montero 3.0 auto
stock original Japanese
about 200k miles