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I swapped out the old O2 sensor and so far my "seat of the pants" analysis says the car has more power. The voltage is oscillating between .1 and .9, which, from what I have read, sounds correct. I am hopeful my fuel economy gets better too. Now I just need to fix the rough idle and sporadic miss. Any ideas? Thanks, Bob.
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1987 Mercedes 260E (W124) 213,000 miles
1971 MB 220 w/ 4 spd manual (W115) "Suzy" (sold)
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