Diagnosis And Testing: Turbocharger
WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Check for Diagnostic Trouble Codes (DTCs) stored in PCM memory. If any DTCs are present, refer to the appropriate Engine ELECTRICAL DIAGNOSTICS article.
Turbocharger Diagnosis
| 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 |