Found a easy way to fix the erratic idle on these motors. Problem is with idle control motor not closing off the port from intake thru throttle body. Quick fix is to put a rubber cap off plug, trim to fit hole. Then remove throttle idle screw and nut, turn screw up side down, use Phillip screwdriver to screw in upside down, use 8mm to retighen screw after adjust idle speed. Works like a charm. Hit me up on my email [email protected]