Correct Duty Cycle Procedures for CIS-E - PeachParts Mercedes-Benz Forum

ps2cho · #1 04-11-2009, 05:14 PM

Quote:

3) Detach the purge line at the electric switchover valve and seal. On my car, this valve is mounted on the inner wall of the left fender, adjacent to the ABS controller. The subject line is black tubing with white stripes.

Is there a picture of this purge line? I am a little confused over it.

Is it necessary to remove this prior to adjusting the mixture for My 1988 300TE. I want to make sure I am setting the mixture correctly because I am having some trouble getting a correct reading.

This is the step that I WAS taking for my 1988 300TE (California)
1. Ignition on, engine off
2. Go to diagnostic box, press and hold button for 4 seconds to read error codes (none)...then press and hold for 7 seconds. Red light should be solid now.
3. Start car
4. Put negative end of DMM into Pin 3 of X11 connector
5. Adjust CCW = lean, CW = Rich.
6. Adjust until reading oscillates around 50%.

Are my steps correct? As you can see I did not do this purge valve thing...

Much appreciated,
Robert