I just got new scanning software yesterday - I'm still trying to find the low-rpm miss and rough idle problem. Here's what the program says:
At Idle in closed loop:
Manifold Absolute Pressure (in/hg) is 10.3 - 10.6
Intake Air Temp is 109 dg F
Ignition Timing Advance varied between 14 - 16 degrees
MAF Flow Rate was .86 - .89 lb/min
Long Term Fuel Trim Bank 1 was -7.8%
Long Term Fuel Trim Bank 2 was -2.3%
O2 Sensor B1S1 Voltage ranged from .12 V to .795 V
O2 Sensor B2S1 Voltage ranged from .08 V to .835 V
The Bank 1 and Bank 2 O2 Sensors didn't seem to follow one another - it seems like they each did their own thing separately.
Now I'm thinking my problem is both the front O2 sensors......
At Idle in closed loop:
Manifold Absolute Pressure (in/hg) is 10.3 - 10.6
Intake Air Temp is 109 dg F
Ignition Timing Advance varied between 14 - 16 degrees
MAF Flow Rate was .86 - .89 lb/min
Long Term Fuel Trim Bank 1 was -7.8%
Long Term Fuel Trim Bank 2 was -2.3%
O2 Sensor B1S1 Voltage ranged from .12 V to .795 V
O2 Sensor B2S1 Voltage ranged from .08 V to .835 V
The Bank 1 and Bank 2 O2 Sensors didn't seem to follow one another - it seems like they each did their own thing separately.
Now I'm thinking my problem is both the front O2 sensors......
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