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emissions woes 700 1991

posted by  rstarkie on  Fri Apr 8 05:03 CST 2005
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last visit: Fri Oct 24 10:14 CST 2014
[RELATED]

1991 745Ti 187,000K

Failed the NO portion of the Ohio eCheck yesterday. Registered 1695 With an allowable limit of 878PPM.

Found a couple of small vacuum leaks this morning and the O2 sensor seems to be dancing between .1 and .8 volts as I believe it should.

Fuel pressure measures at 39 lbs.

Does anyone know if there is a way to override the ECU's control of engine timing. It sits at 12 BTDC at all times. Of course moving the distributor has no effect on it at all- not even a momentary change as it is moved.

Randy





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