Finally replaced my front O2 sensor after almost 197k miles. I don't think it changed anything
#1
AudiWorld Uber User
Thread Starter
Finally replaced my front O2 sensor after almost 197k miles. I don't think it changed anything
Here's a little O2 sensor voltage comparison of 3rd gear pulls.
196k old OEM sensor
4/7/07 40-45F
Idle Part Ld
-0.8% -7.0%
O2 Sens
Bef TWC RPM
0.83 4800
0.825 5000
0.82 5200
0.815 5440
0.8 5640
0.79 5840
0.785 6000
0.785 6160
0.775 6320
New Bosch universal sensor
4/8/07 43F
Idle Part Ld
-0.8% -1.6%
0.845 4840
0.84 5080
0.82 5280
0.82 5480
0.81 5680
0.805 5880
0.79 6040
0.785 6240
0.785 6360
I only put 11 miles on the sensor, so I don't know if the drop in LTFT is because it hasn't been driven enough. It looks a little on the lean side. Seems odd that it would pull fuel. I have to find out if the sensor voltage is expected from the GIAC software. The next time I log anything, I plan to be running PC16... maybe I should put it off another week.
196k old OEM sensor
4/7/07 40-45F
Idle Part Ld
-0.8% -7.0%
O2 Sens
Bef TWC RPM
0.83 4800
0.825 5000
0.82 5200
0.815 5440
0.8 5640
0.79 5840
0.785 6000
0.785 6160
0.775 6320
New Bosch universal sensor
4/8/07 43F
Idle Part Ld
-0.8% -1.6%
0.845 4840
0.84 5080
0.82 5280
0.82 5480
0.81 5680
0.805 5880
0.79 6040
0.785 6240
0.785 6360
I only put 11 miles on the sensor, so I don't know if the drop in LTFT is because it hasn't been driven enough. It looks a little on the lean side. Seems odd that it would pull fuel. I have to find out if the sensor voltage is expected from the GIAC software. The next time I log anything, I plan to be running PC16... maybe I should put it off another week.
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#9
AudiWorld Uber User
Thread Starter
I know. Since the sensor voltages weren't really different, I wasn't concerned
I really only installed the sensor because I'll be getting PC16 and that's what's recommended.
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