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O2 sensor? 200 1989

posted by  Trev29 on  Tue Mar 9 00:20 CST 2010
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last visit: Fri Oct 17 05:56 CST 2014
[RELATED]

As Dan asks, did you check the O2 sensor?

A defective O2 sensor will cause the computer to run rich.

(I'm new to this but) Remove the sensor and heat it in a propane flame. Look for changing voltage readings between the sensor body and and third (non-heater) wire.

O2 sensors become sluggish or even inoperative after awhile (silicone and lithium cause damage). You can use a sensor for a mustang as a replacement by cutting and crimping on the old wires and plugs. Bosch #13942.
--
1980 245 Canadian B21A with SU carb but electronic ignition and M46 trans in Brampton, Ont.






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