>> The O2 sensor is not working correctly. It shows an >> erratic output ranging from 0.3 volts to 1.8 volts. The readings don't >> change when the mixture is enriched with the fuel pressure regulator. > >Sounds like a bad O2 sensor. > >> The engine runs the same when in open the O2 sensor is connected or not. > >That is correct. Your O2 sensor is shot. Since your 02 sensor is not >putting out a voltage that is in an acceptable range ( according to what >the ECU expects to see), it simply ignores the 0s sensor input. > >TomC Wait a minute. If the O2 sensor is producing voltage, it is, at least minimally, OK. Increasing the fuel pressure will only make the reading go higher. Also, there must be a problem with your measuring methodology, because an oxygen sensor cannot produce more than about 1 volt, no matter how rich the mixture. Joshua Van Tol -- jjvantol@lear.csp.ee.memphis.edu |
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