Welcome to the board!!

Verify that you have no air leaks, especially in the rubber connector portions around the air tube connections, between air filter housing and throttle body. The slightest of cracks there will cause issues. Also, does it run better if you turn the idle up a bit?
Hope to wheel with you soon,

Staceman


85 4Runner - With NEW Marlin 4.7 Gears!! It's a whole new beast!