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Re: Changing O2 Sensor (archive)

[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]

Posted by Sean Horton on January 28, 2000 at 11:29:29:

In Reply to: Changing O2 Sensor posted by Richard on January 27, 2000 at 18:11:31:

I replaced mine last week and it was awkward but doable. The hardest procedure is removing the old and tightening the new just because it is difficult to get above the exhaust to loosen and tighten. Definitely buy an O2 sensor socket (~$7 at Autozone, it is longer and has a side cut out to accomodate the sensor and the wires.) I backed the car up ramps and layed on the floor. I used a 1/2" drive ratchet with a 3" extension and u-joint then another 5" extension and another u-joint to get at the old sensor which, by the way, I had cut the wires off so the socket would go on it further. The wrench was quite a contraption, but it got the job done. Putting the new sensor in is easy, just start it by hand and tighten it with the ratchet. Probably a 45 minute job total. I bought my sensor at BavAuto right out of the catalog. They'll know the P/N if you call them 800-535-2002.

Sean Horton
'89 535iA, sharked

: How hard is it to replace the O2 Sensor on my E34 535i. What would you recommed? Can anyone give me the P/N's?

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