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idle (archive)
[ Follow Ups ] [ 3-series (E21) Message Board ] [ Msg. Board FAQ ]
Posted by Karl Koenig on May 29, 2000 at 22:04:31:

Here's one for the collective wisdom of the group. When I bought this 320i ('83) the O2 sensor was disconnected. Reconnecting it seemed to make no difference. But since PO had the car that way, I guessed it was original -- 120K -- and decided to replace it. First time my wife started the car, she complained about the idle -- RPM hunting up and down about 200 RPM. It had always idled smoothly before. So I disconnected the O2 sensor, and idle smoothed right out. What does that mean? If it helps, the sequence valve buzzez continuously whether the O2 sensor is connected or not.

tia

karl

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