I adjust 4 corner idle screw all the same turns out and that has always worked for me. Have you asked bigs for any advice?

Check the rear throttle blades to make sure they are opened the correct amount.

I have electric fans on many vechicals but for some reason on my ranger when I kick the fan on it just drop the idle speed. I have no idea why since the fan and msd are on different power supplys and different relays. [img]/phpBB/images/smiles/icon_confused.gif[/img]