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-   -   M103 Idle/Sputter/Stall Intermittent Issue (http://www.peachparts.com/shopforum/showthread.php?t=372360)

Benz Mondi 10-09-2015 07:12 PM

DTC plug in front of the battery
 
Quote:

Originally Posted by JamesDean (Post 3526521)
Hi Benz Mondi!

When you say DTC plug, are your referring to the round plug on the driver's fender? I think its also called X11 port. If so, that was one of the first things I checked. It was reading, at op temp, at idle, floating between 19-25%. If memory serves fault codes are read out as solid percentages. I.E stuck at 50% would mean O2 sensor fault.

19-25% is pretty rich if I recall correctly.

I do also have this issue where the car, when cold, never wants to start up on the first time. It'll stall out immediately, second time it will start but run harsh until rpm's pick up. Then its fine.

Awesome news on the cruise! I'm glad to hear it! My 190's was one of first or second units I did, its still running! My 300D's has the most miles (of any that I know of) at 71K, still going strong!

On my 1990 300E, it's mounted on the firewall in front of the battery (see pic). Even though you transplanted the M103, given the year of your 201, I thought that it might still have it.

Stretch 10-10-2015 04:43 AM

Quote:

Originally Posted by JamesDean (Post 3527260)
...

I do intend on adjusting the lambda tower though, 19-25% is a bit rich. (right?)

I don't know.

The last of the KE specs for the W201 (M102) say 50% duty cycle is correct but in years gone by it was different. I guess you need to find out / check which system you have.

Hit Man X 10-13-2015 03:14 PM

Quote:

Originally Posted by JamesDean (Post 3526476)
... I've seen the work of the one rebuilding company..not so great.



Programma? :) It is amazing they actually sell their crap as 'remanufactured'



Did the shop toss a set of gauges on the CIS system and check for pressure under load?


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