Hi,
I have a 1997 S10 4.3L that failed its emission test on Hydrocarbon and Oxides of nitrogen. It has a misfire and the oil smells like gas. I did a compression test and vacuum test, and both seemed fine.
Here is the data from my latest OBD2 scan:
OBD-II Diagnostic Report
System Status (Mode 01)
Trouble Codes
MIL Status Off
Number of DTCs 0
Continuous Monitoring tests
Misfire Supported Complete
Fuel System Supported Complete
Comprehensive Components Supported Complete
non-Continuous Monitoring tests
Catalyst Supported Not Complete
Heated Catalyst Not Supported
Evaporative System Supported Not Complete
Secondary Air System Not Supported
A/C System Refrigerant Not Supported
Oxygen Sensor Not Supported
Oxygen Sensor Heater Supported Complete
EGR System Supported Not Complete
Fuel System Status
Fuel System 1 Status open loop
Fuel System 2 Status open loop
Diagnostic Trouble Codes (Mode 03, 07, 0A)
Description
Stored Diagnostic Trouble Codes (DTC) (Mode 03)
No Trouble Codes
Pending Diagnostic Trouble Codes (DTC) (Mode 07)
No Trouble Codes
Permanent Diagnostic Trouble Codes (DTC) (Mode 0A)
No Trouble Codes
Monitored Test Results (Mode 06)
Description Value Min Max Units Result
TID $02, CID $04 - Values defined by manufacturer 0 0 Pass
TID $02, CID $16 - Values defined by manufacturer 0 0 Pass
TID $02, CID $26 - Values defined by manufacturer 0 0 Pass
TID $02, CID $36 - Values defined by manufacturer 0 0 Pass
TID $02, CID $46 - Values defined by manufacturer 0 0 Pass
TID $02, CID $10 - Values defined by manufacturer 0 0 Pass
TID $02, CID $20 - Values defined by manufacturer 0 0 Pass
TID $02, CID $30 - Values defined by manufacturer 0 0 Pass
TID $02, CID $40 - Values defined by manufacturer 0 0 Pass
TID $02, CID $12 - Values defined by manufacturer 0 0 Pass
TID $02, CID $11 - Values defined by manufacturer 0 0 Pass
TID $02, CID $21 - Values defined by manufacturer 0 0 Pass
TID $02, CID $31 - Values defined by manufacturer 0 0 Pass
TID $04, CID $20 - Values defined by manufacturer 32768 32767 Fail
TID $06, CID $35 - Values defined by manufacturer 24 88 Pass
TID $06, CID $41 - Values defined by manufacturer 29 105 Pass
TID $06, CID $47 - Values defined by manufacturer 36 213 Pass
TID $06, CID $55 - Values defined by manufacturer 24 88 Pass
TID $07, CID $0C - Values defined by manufacturer 32768 0 Fail
TID $07, CID $0D - Values defined by manufacturer 32768 0 Fail
Live Data (Mode 01)
Description Value Units Min Average Max
03 - Fuel System Status
Fuel System 1 open loop - 1.00 1.00 1.00
Fuel System 2 open loop - 1.00 1.00 1.00
04 - Calculated Load Value 2 % 1.96 2.21 5.88
05 - Engine Coolant Temperature 48 °C 48.00 48.80 50.00
06 - Short Term Fuel Trim - Bank 1 -7.8 % -9.38 -3.42 -0.78
07 - Long Term Fuel Trim - Bank 1 0.0 % 0.00 0.00 0.00
08 - Short Term Fuel Trim - Bank 2 -7.0 % -12.50 -4.86 -0.78
09 - Long Term Fuel Trim - Bank 2 0.0 % 0.00 0.00 0.00
0B - Intake Manifold Absolute Pressure 32 kPa 22.00 30.80 32.00
0C - Engine RPM 694 rpm 639.75 728.36 1575.00
0D - Vehicle Speed 0 km/h 0.00 0.00 0.00
0E - Ignition Timing Advance for #1 Cylinder 20 ° 18.50 21.30 26.00
0F - Intake Air Temperature 39 °C 39.00 39.60 42.00
10 - Air Flow Rate 5.37 g/s 5.13 5.49 7.84
11 - Absolute Throttle Position 0.0 % 0.00 0.00 0.00
14 - Bank 1 - Sensor 1
Oxygen Sensor Output Voltage 0.525 V 0.11 0.72 1.02
Short Term Fuel Trim -7.8 % -9.37 -3.36 -1.56
15 - Bank 1 - Sensor 2
Oxygen Sensor Output Voltage 0.130 V 0.13 0.68 1.03
Short Term Fuel Trim 99.2 % 99.21 99.21 99.21
16 - Bank 1 - Sensor 3
Oxygen Sensor Output Voltage 0.080 V 0.07 0.63 1.02
Short Term Fuel Trim 99.2 % 99.21 99.21 99.21
18 - Bank 2 - Sensor 1
Oxygen Sensor Output Voltage 0.205 V 0.12 0.70 1.01
Short Term Fuel Trim -7.8 % -12.50 -4.86 -2.34
1E - Power Take Off Status OFF - 0.00 0.00 0.00
