Help!
10-10-2017, 11:53 AM
#1
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GL320
Help!
My GL320 is poorly. The engine warning light is on and the engine has low power. When idle, the engine can be revved over 3000 but the turbo has a terrible shuddering sound. Seems better when the intercooler hoses are off.
The mechanic isn't sure what the issue is but he suspects either a blocked intercooler or a blocked DPF (though none of the codes mention the DPF). Any help would be appreciated as they are expensive parts to speculatively change!
Engine codes are:
2526-4 Charge pressure positioner. Signal line is interrupted
2527-2 Left EGR positioner. Short cct to ground
3053-4 Intake air temperature sensor. Signal Fault. (B2-7b1)
3052-4 Intake air temperature sensor. Signal Fault. (B2-6b1)
2627-4 Mass airflow sensor is faulty
2603-2 Right hot film mass airflow sensor. Air mass is too small
2602-2 Left hot film mass airflow sensor. Air mass is too small
The mechanic isn't sure what the issue is but he suspects either a blocked intercooler or a blocked DPF (though none of the codes mention the DPF). Any help would be appreciated as they are expensive parts to speculatively change!
Engine codes are:
2526-4 Charge pressure positioner. Signal line is interrupted
2527-2 Left EGR positioner. Short cct to ground
3053-4 Intake air temperature sensor. Signal Fault. (B2-7b1)
3052-4 Intake air temperature sensor. Signal Fault. (B2-6b1)
2627-4 Mass airflow sensor is faulty
2603-2 Right hot film mass airflow sensor. Air mass is too small
2602-2 Left hot film mass airflow sensor. Air mass is too small
10-10-2017, 04:40 PM
#2
Senior Member
My GL320 is poorly. The engine warning light is on and the engine has low power. When idle, the engine can be revved over 3000 but the turbo has a terrible shuddering sound. Seems better when the intercooler hoses are off.
The mechanic isn't sure what the issue is but he suspects either a blocked intercooler or a blocked DPF (though none of the codes mention the DPF). Any help would be appreciated as they are expensive parts to speculatively change!
Engine codes are:
2526-4 Charge pressure positioner. Signal line is interrupted
2527-2 Left EGR positioner. Short cct to ground
3053-4 Intake air temperature sensor. Signal Fault. (B2-7b1)
3052-4 Intake air temperature sensor. Signal Fault. (B2-6b1)
2627-4 Mass airflow sensor is faulty
2603-2 Right hot film mass airflow sensor. Air mass is too small
2602-2 Left hot film mass airflow sensor. Air mass is too small
The mechanic isn't sure what the issue is but he suspects either a blocked intercooler or a blocked DPF (though none of the codes mention the DPF). Any help would be appreciated as they are expensive parts to speculatively change!
Engine codes are:
2526-4 Charge pressure positioner. Signal line is interrupted
2527-2 Left EGR positioner. Short cct to ground
3053-4 Intake air temperature sensor. Signal Fault. (B2-7b1)
3052-4 Intake air temperature sensor. Signal Fault. (B2-6b1)
2627-4 Mass airflow sensor is faulty
2603-2 Right hot film mass airflow sensor. Air mass is too small
2602-2 Left hot film mass airflow sensor. Air mass is too small
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