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02 Sensor? (archive)

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Posted by Roy on April 06, 2001 at 19:47:47:

My engine light came on and I lost power.I went from 70mph to 40mph and could not go any faster.
I brought it to my mechanic and he checked the code and it said 02 sensor.He replaced the sensor
that was fine for about 20 min of driving,then the light came back on.I took it back and he checked once again and this time it came back with 02 sensor controller.He checked for vac.leaks,intake gasket
all fine.He said that the cat might be blocked.Anybody ever have this problem??:( :(
Roy 88 735i 115,000m

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