Faulty Turbocharger Boost Sensor
To determine if a faulty turbocharger boost sensor is causing excessive white smoke, perform the following:
- Check the condition of the boost air combination sensor (look for cracks, corrosion, missing or bent pins).
- Resolve the faulty turbocharger boost sensor; refer to "11.2.1 Turbocharger Boost Sensor Resolution" .
Turbocharger Boost Sensor Resolution
Perform the following steps to resolve a faulty turbocharger boost sensor:
- Disconnect harness connection from turbocharger boost sensor and remove two bolts securing the boost sensor to the air intake manifold. Discard sensor.
- Secure the turbocharger boost sensor to the air intake manifold with two bolts. Torque bolts to 11 N·m (96 lb·in.).
- Connect the harness connector to the boost sensor.
- Verify the turbocharger boost sensor resolution; refer to "18.104.22.168 Test Engine with Replace Turbocharger Boost Sensor" .
Test Engine with Replace Turbocharger Boost Sensor
Perform the following to determine if replacing the turbocharger boost sensor corrected the excessive white smoke condition:
To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.
- Start the engine.
- Run the engine speed to full load.
- Visually inspect the exhaust for excessive white smoke.
- If the engine exhaust emission appears normal, no further troubleshooting is required. Shut down the engine.
- If the engine exhaust emission is excessive, shut down the engine, check for a malfunctioning air intake (grid) preheater. Refer to "11.3 Malfunctioning Air Intake (Grid) Preheater" .
|EPA07 MBE 4000 DDEC VI Troubleshooting Guide - 6SE568|
|Generated on 10-13-2008|