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Old 10-06-1999, 01:34 AM
Posts: n/a
I performed the check of the lambda as per
benzmac instructions.(lambda you can check)
my readings were as follows.25 low 31 high
avg of 28.
Should I start with an adjustment of the lambda or change the o2 sensor and check again? this car has 103000 on it and I dont know if the o2 sens was ever been changed.
Also what size of wrench is needed for the o2 sens? I only go to 19mm at this time.
Thanks again

92 300TE 4MATIC

Old 10-06-1999, 08:13 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
From the readings posted, the basic fuel adjustment is on the rich side. This will allow the car to perform better durning warm-up & at full throttle, it might reduce the fuel mileage. Sounds like the O2 sensor is working fine.
Old 10-09-1999, 02:26 AM
Posts: n/a
Adjusted the fuel mixture to a avg. reading
of 51. idle is smoother, it used to stumble
then accelerate with a 30 to 40 second cycle. Thanks M.B.DOC & BENZMAC

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