1990 Mercedes-Benz 190E Q&A

1990 Mercedes-Benz 190E Question: Check engine light on - suspect emmission control system

My MB dealer suspects carbon builtup somewhere in the system and says replacement might be needed and cost up to US$4,000. It has 145k on it. Suggestions? -
Answer 1
The dealer sounds clueless. I used to work for Bosch who designed the Mercedes KE-Jetronic Emissions System and there are several routine things that wear out, like Oxygen Sensors ( $200 ) etc, etc. What is the code that is setting the Check Engine Light. if I knew that, I could help you with your problem. I have and do work on lots of Mercedes Emissions problems. I do Gold Shield Emissions work in N CA. where the State pays me to solve tough Emissions issues for people so they can get their car to pass the Emission Test and get registered. -
Comment 1
How does one find out what the "code" is that is setting the light? -