Turbocharger Pressure Check

Disconnect turbocharger pressure control hose at wastegate solenoid valve (attached to air cleaner) and plug nipple. Attach pressure gauge to hose. See Fig 1 .
Drive vehicle and accelerate engine, in 2nd gear, to greater than 3500 RPM. Measure turbocharger pressure when pressure gauge stabilizes. On M/T models, pressure gauge should read 6-12 psi (.4-.8 kg/cm² ). On A/T models, pressure gauge should read 6-10 psi (.4-.7 kg/cm² ).
If pressure gauge reading is more than specified, check wastegate actuator. See WASTEGATE ACTUATOR TEST below. Replace wastegate actuator as required. If pressure gauge reading is less than specified, check for malfunctioning wastegate valve, turbocharger pressure leaks and faulty turbocharger.

Fig 1: Testing Turbocharger Pressure

Courtesy of CHRYSLER MOTORS.

CAUTION: When testing wastegate actuator, DO NOT apply a pressure more than 12 psi (.9 kg/cm² ) to wastegate actuator, or actuator damage may occur. Never attempt to adjust wastegate actuator.