Well Well! 12,000km old THP150/155? (build date12-11) and I get my first little taste of what seems to be a commonly reported problem.
Nicely warmed up and all running well but when asked for a big roll on acceleration burst from 70-90kmh in fourth I got three quick very noticeable stutters. Sort of like pinking or pre-ignition sound then back to normal. Maybe even over boost or waste gate not opening up fast enough? Couldn't reproduce the event though and tried many times. The ECU was being logged at the time though and nothing unusual showed up the following is the fault log thrown up.
Fault log report generated by Torque for Android
=================================================
Vehicle VIN: Not present
Vehicle Manufacturer: Unknown
Vehicle Calibration ID: Not present
Current Fault Log
------------------
ECU reports no current faults
Pending Fault Log
------------------
P1385: [BMW] Knock Sensor 4 Circuit
P2336: Cylinder #1 Above Knock Threshold
Historic Fault Log
------------------
ECU reports no historic faults
Other discovered fault codes
(possibly pending, current or manufacturer specific)
----------------------------------------------------
ECU reports no other fault codes logged
End of report.
A dump of the boost pressure logged over the period was 21.75566101, 21.61062241, 22.48085022, 4.35113239, 22.04573631, 24.22130203
This is PSI not calibrated though so not sure about the absolute value only the trend. This is exactly what it looks like when you change gears in hard acceleration but by the time and GPS I can associate this with the event.
It's been running fine ever since but what do you think it is? What should I do? Take it to Citroen service just in case I do need to get a warranty claim in the future?
Nicely warmed up and all running well but when asked for a big roll on acceleration burst from 70-90kmh in fourth I got three quick very noticeable stutters. Sort of like pinking or pre-ignition sound then back to normal. Maybe even over boost or waste gate not opening up fast enough? Couldn't reproduce the event though and tried many times. The ECU was being logged at the time though and nothing unusual showed up the following is the fault log thrown up.
Fault log report generated by Torque for Android
=================================================
Vehicle VIN: Not present
Vehicle Manufacturer: Unknown
Vehicle Calibration ID: Not present
Current Fault Log
------------------
ECU reports no current faults
Pending Fault Log
------------------
P1385: [BMW] Knock Sensor 4 Circuit
P2336: Cylinder #1 Above Knock Threshold
Historic Fault Log
------------------
ECU reports no historic faults
Other discovered fault codes
(possibly pending, current or manufacturer specific)
----------------------------------------------------
ECU reports no other fault codes logged
End of report.
A dump of the boost pressure logged over the period was 21.75566101, 21.61062241, 22.48085022, 4.35113239, 22.04573631, 24.22130203
This is PSI not calibrated though so not sure about the absolute value only the trend. This is exactly what it looks like when you change gears in hard acceleration but by the time and GPS I can associate this with the event.
It's been running fine ever since but what do you think it is? What should I do? Take it to Citroen service just in case I do need to get a warranty claim in the future?
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