Just replaced my O2 sensor last night.  This morning (and at lunch time and time to go home), when I first fire 'er up, she idles great.  But when I put it in reverse and back up, it feels like the parking brake is partially on.  Then on take off, it starts out the same, like the parking brake is stuck, for a couple of seconds, then it almost dies (the front end nosedives), then kicks back in adn seems to run OK from there.

After it warms up, the power seems fine, but I haven't driven far enough to see what the mileage is like.

I checked the archives and can't seem to locate anything related to O2 sensors and cold engine problems, just hesitation when warm.

I haven't had a chance to dig into the Bentley manual yet, but thought I could check for similar experiences.

Brian
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