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W203 supercharger/kompressor not working correctly
I have 2005 w203 c230 1.8K kompressor isnt boosting fully no check engine light checked on OBD and still couldnt find problem im thinking airflow sensor or map sensor also thinking it was stealing air from somewhere but checked on smoke and still nothing
Well one time i left car to polish it was parked like 10-11 days when i took the car and when i was driving home when i dropped throttle i was hearing superchargers sound and car was much faster then now its like w202 1.8 now
It doesn't seem like your symptoms are the same as mine. Specifically, my check engine light illuminated, and I was able to read codes. The car definitely felt like it was running on reduced power, so that seems similar to your experience.
It is possible that you have a leak somewhere in the supercharger piping that has not yet reached the level where it triggered the On-Board Diagnostic system. In addition to the hose that caused my problem, you may want to check for leaks around the pipe connections. Each of the connections should have an O-ring that ensures a tight fit. I had to take my supercharger piping apart when I replaced my radiator. All of my O-rings had degraded, and I decided to replace them.
Well i found this thing when i remove plus cable from battery for like few minutes and after that i attach plus cable i found out that i had boost it was like the reset thing i was getting boost but today i removed it and do nothing
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