Electric Air Divert Valve 3.1L, 3.4L & 5.0L & 5.7L "B" & "D" Bodies)

With engine at idle, check for at least 10 in. Hg to valve. Run engine at part throttle (less than 2000 RPM). Air should go into exhaust ports until system goes into closed loop, then divert the air to atmosphere. If this does not occur, check terminal harness connector to valve, check for short to ground in air solenoid harness or replace defective valve. Regardless of open or closed loop operation, air should always divert to atmosphere on heavy deceleration.