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MAN TGX Euro 6 (2017) Power Loss Despite New Sensor, Air Flow Meter, Turbos

simona_urda 3564 9
Best answers LABEL_AI_GENERATED

Why does a 2017 MAN TGX Euro 6 have no power even after replacing the pressure sensor, air flow meter, and both turbos, with no fault codes?

Check live boost/charge pressure while driving and confirm whether it rises and holds normally, because the fault may be in the control system rather than the new parts [#21145261][#21182340] Also inspect the EDC for any tampering or modifications [#21145261] Verify the EGR system is working correctly [#21145643] Check the Pierburg valve, DPF differential pressure, and valve clearance as possible causes of the power loss [#21149369][#21149712]
AI summary based on the discussion. May contain errors.
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  • #1 21144996
    simona_urda
    Level 2  
    Posts: 3
    hello, maybe someone else had this problem: MAN TGX EURO 6 (2017), it has no power at all, I changed the pressure sensor, air flow meter, changed both turbos, it has no error code.
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  • #2 21145261
    bosso1
    Level 8  
    Posts: 29
    Rate: 7
    Any fault codes from the diagnostics?
    Have you checked the turbo pressure while driving, does it screw up? Has anything been tampered with with the EDC?
  • #3 21145643
    kakibara
    Level 35  
    Posts: 2379
    Help: 202
    Rate: 1284
    EGR checked?
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  • #4 21149369
    iWaM
    Level 24  
    Posts: 694
    Help: 48
    Rate: 179
    Pierburg?
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  • #5 21149712
    Szymcio_99
    Level 12  
    Posts: 61
    Help: 1
    Rate: 32
    Pressure differential on DPF checked ?
    Valve clearance checked ?
  • #6 21149888
    iWaM
    Level 24  
    Posts: 694
    Help: 48
    Rate: 179
    Shame on our efforts, someone from Romania asked a question and it evaporated.
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  • #8 21150731
    Szymcio_99
    Level 12  
    Posts: 61
    Help: 1
    Rate: 32
    >>21150314 and it came out best and fastest probably :)
  • #9 21169352
    simona_urda
    Level 2  
    Posts: 3
    Sorry, I have not disappeared. I still haven't discovered what the problem is. I have replaced the valves, turbo..., sensors, EGR.... Today I finally fired it up, went for a walk and after 10 minutes it started knocking in the engine again. Will reopen😩
  • #10 21182340
    qruq03
    Level 16  
    Posts: 262
    Help: 15
    Rate: 62
    And any parameters you have?
    Charge pressure ?
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Topic summary

LABEL_AI_GENERATED
The discussion revolves around a MAN TGX Euro 6 (2017) experiencing significant power loss despite the replacement of several components, including the pressure sensor, air flow meter, and both turbos. The original poster reports no error codes and seeks advice on potential causes. Responses suggest checking for fault codes, turbo pressure during operation, EGR functionality, pressure differential on the DPF, and valve clearance. The author later updates that despite replacing multiple parts, the issue persists, with the engine knocking after a short drive.
AI summary based on the discussion. May contain errors.
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