Got questions about O2 sensor for XFI 2.010.
It seems to me that the O2 correction response has slowed down and it has become harder to smooth out the fuel curve. Can O2 sensors or the ECU circuit get lazy?
I went to the XFI 2.0 ECU op manual in the Q&A section for instructions and did the following:
The Lambda symbol appeared indicating it was connected to the ECU. I started the vehicle and looked at a sensor called UEGOS (V) in the main dashboard display. The manual said that this voltage should stabilize between 0.43 and 0.49 volts within 30 seconds of operation. I read 0.41 for three different tests.
The manual went on to say that if the UEGOS voltage is out of range, the sensor will become inoperative and that this could be the result of wiring harness damage, physical damage to the sensor, contamination of the sensor, or damage to the ECU. Visually everything appeared good, but the UEGOS (V) was slightly out of range (0.41 vs 0.43 to 0.49) - does this mean I need to replace the O2 sensor?
Next I took the O2 sensor out and turned on the ignition to see if the element would glow orange in the end of the sensor. It was and the body of the sensor was getting very warm as I expected.
Next I followed the steps to verify that the oxygen sensor circuitry in the ECU was working properly. I disconnect the oxygen sensor to observe the following sensors in the main dashboard display while online. The manual said that UEGO (V) should read approximately 3.51 volts, UEGOS (V) should read approximately 1.02 volts, and UEGOR (V) should read approximately 4.98 volts. My readings were UEGO (V) 3.51, UEGOS (V) 1.00, and UEGOR (V) 4.98 - Is UEGOS (V) at 1.00 vs 1.02 close enough?
Any advice would be appreciated.
Cal - If you think I need an new sensor have Holly call me.
It seems to me that the O2 correction response has slowed down and it has become harder to smooth out the fuel curve. Can O2 sensors or the ECU circuit get lazy?
I went to the XFI 2.0 ECU op manual in the Q&A section for instructions and did the following:
The Lambda symbol appeared indicating it was connected to the ECU. I started the vehicle and looked at a sensor called UEGOS (V) in the main dashboard display. The manual said that this voltage should stabilize between 0.43 and 0.49 volts within 30 seconds of operation. I read 0.41 for three different tests.
The manual went on to say that if the UEGOS voltage is out of range, the sensor will become inoperative and that this could be the result of wiring harness damage, physical damage to the sensor, contamination of the sensor, or damage to the ECU. Visually everything appeared good, but the UEGOS (V) was slightly out of range (0.41 vs 0.43 to 0.49) - does this mean I need to replace the O2 sensor?
Next I took the O2 sensor out and turned on the ignition to see if the element would glow orange in the end of the sensor. It was and the body of the sensor was getting very warm as I expected.
Next I followed the steps to verify that the oxygen sensor circuitry in the ECU was working properly. I disconnect the oxygen sensor to observe the following sensors in the main dashboard display while online. The manual said that UEGO (V) should read approximately 3.51 volts, UEGOS (V) should read approximately 1.02 volts, and UEGOR (V) should read approximately 4.98 volts. My readings were UEGO (V) 3.51, UEGOS (V) 1.00, and UEGOR (V) 4.98 - Is UEGOS (V) at 1.00 vs 1.02 close enough?
Any advice would be appreciated.
Cal - If you think I need an new sensor have Holly call me.