mash1612

hi i have a Mercedes W203 646 engine 220cdi the problem is that it showed check engine light took it the workshop and diagnosed it and the error was low boos pressure. i have change the boost pressure with the original part number and still the same problem i have also checked to see if there are some air leakages but none is found on the horse pipes and inter-cooler i have also tested the EGR its also fine and still low boost. i have also tried different actuators and and different turbo but still the problem is the same

MJ50

moved to W203 forum...

C230 Sport Coup

Probably get more info from benzworld, since most of the owners here are US based.
And we didn't get an diesel C classes. Bummer.

Petethepug

Vacuum diagram is your friend. Hopefully you’ll find a rub out or chaffed hose telling a sensor to hold off on boost.

Are you sporting the single or dual turbo?

https://partsouq.com/en/catalog/genuine/diagram?c=MB201810&ssd=$*KwE9CRgWSH9xOEU2WkwUYGVxU VZIOTY7OigHNHx6SUdKQ3dUJisyT08_OD0-PjNnaXw-cH9tZ05yKSB6fmF7ZWQjLGRodGJmPT47OTY9Kyd0KyctNCsqIy xkYHRiZj5dKyQtbWcpbHpwOkYrJC14ailsenUtcwAAAAClvcXX $&number=A6020781181&srsltid=AfmBOooj6lD4jV4J4fbIL SEHiwjjGA2qdc77JhzK_mbODgYIZg46Iowd