Pelagic
- Reaction score
- 42
- Thunderbird Year
- 2003
Engine light on.
Codes indicate something about catalytic.
Replaced downstream O2 sensors with Bosch.
Code came back.
O2 sensor 1 voltage 0.15 V
O2 sensor 1 Short Term fuel trim: -2.34% (is this normal at idle (1197RPM)?)
O2 sensor 2 voltage 0.1 V
O2 sensor 5 voltage 0.88 V (where is this one? Upstream? and does this indicate the problem? )
O2 sensor 5 Short Term fuel trim 1.56% (does this indicate the problem sensor?)
O2 sensor 8 voltage 0.17 V
What is correct OEM PN for upstream O2 sensor for my 2003 and are they really different (up vs. down?)
Aftermarket good? Not? If so, Bosch? or?
Thanks
Codes indicate something about catalytic.
Replaced downstream O2 sensors with Bosch.
Code came back.
O2 sensor 1 voltage 0.15 V
O2 sensor 1 Short Term fuel trim: -2.34% (is this normal at idle (1197RPM)?)
O2 sensor 2 voltage 0.1 V
O2 sensor 5 voltage 0.88 V (where is this one? Upstream? and does this indicate the problem? )
O2 sensor 5 Short Term fuel trim 1.56% (does this indicate the problem sensor?)
O2 sensor 8 voltage 0.17 V
What is correct OEM PN for upstream O2 sensor for my 2003 and are they really different (up vs. down?)
Aftermarket good? Not? If so, Bosch? or?
Thanks
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