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Available at local auto parts store... (archive)

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Posted by JamesM on October 03, 2000 at 08:46:15:

In Reply to: Oxygen Sensor posted by Kevin on October 03, 2000 at 01:00:20:

The sockets are available from your local parts store. They're about $12. It should either be a 22mm or 7/8" (both the same size). You'll need a good universal, a 3/8" breaker bar, and two 10" extensions (or one 18") to get to it really easily. Spray it down with Liquid Wrench (good), PB Blaster (better), or Wurth Rost-off (best). WD-40 doesn't work that well. Let it sit for a few minutes. Tapping the sensor will help the lube penetrate. Unplug the O2 sensor. Assemble the extensions and universal, pop the socket on, and slip it all over the O2 sensor. Crank down on the breaker bar. If it's stuck too tight, keep spraying and tapping. You may need to use a blowtorch to heat up the fitting in the header. Don't heat the sensor, and make sure you use non-flammable spray!!! I don't know how long the sensor was in my car, but it popped right off using liquid wrench on a cold exhaust. Just did it last Friday.

Good Luck! If you don't want to pay for the tools necessary, go to a local shop and give them $25 to do the job (barring any complications).

[email protected]
83 535i
88 M3 Henna

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