DIAGNOSIS AND TESTING
TURBOCHARGER
Check for Diagnostic Trouble Codes (DTCs) stored in PCM memory. If any DTCs are present, refer to the appropriate Powertrain Diagnostic Information.
CONDITION |
POSSIBLE CAUSES |
| Low boost pressure, lack of power |
Clogged air filter |
| Leaks between engine and turbocharger |
|
| Exhaust restriction |
|
| Restriction in charge air cooler hose(s) |
|
| Wastegate stuck open |
|
| Wastegate actuator malfunction |
|
| Seized turbocharger shaft |
|
| Overboost |
Wastegate stuck shut |
| Wastegate actuator malfunction |
|
| Noisy operation or vibration |
Leak(s) in charge air cooler hose(s) |
| Intake or exhaust leaks |
|
| Oil starvation |
|
| Worn turbocharger bearings |
|
| Damaged turbine/compressor fins |
|
| Blue smoke from exhaust |
Oil return line blocked |
| Engine breather clogged |
|
| Turbocharger shaft seals damaged |