Recently my car has been running really rich...you can smell raw fuel and the car lunges under any acceleration. Here is the info i got from gnttype.org on that code:
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Trouble Code 45 indicates that the O2 sensor is showing a persistently low exhaust oxygen content (rich), despite the efforts of the ECM to decrease injector on-time (thus decreasing fuel delivered). Integrator and BLM numbers may indicate < 128 by a substantial margin.
The conditions for setting this code are:
no Code 34 or Code 35 (MAF error) present, and
the O2 sensor voltage remains above 752 mV, and
the ECM is in Closed Loop control, and
throttle position is < 2 percent or > 20 percent, and
the above conditions exist for more than 20 seconds.
Typical causes for this code include:
1) O2 sensor defective or contaminated (if incorrect RTV sealant or too much RTV is used, this may happen)
2) Leaking fuel injectors
3) Fuel pressure too high
4) EMI interference from poor plug wires
5) Evaporative Emission system defect
6) TPS and/or EGR problem
7) MAF sensor reading higher airflow than is actually present
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Here is what i have looked at so far corresponding to the list above:
1. from my scanmaster o2 readings i assume the o2 sensor is ok..it is bouncing back and forth in the number range it should be.
2. don't know how to check for leaky fuel injectors...but i just the blue tops about 3000 miles ago.
3. fuel pressure is set correctly
4. tried different set of plug wires and replaced plugs
5. Don't know how to check this
6. throttle position sensor has correct values at full an no throttle and egr seems to function correctly(if you push up on the bottom of the diaphram the car stumbles)
7. Don't know to check this
Any help or suggestions would be greatly appreciated.
TIA
*************************************************
Trouble Code 45 indicates that the O2 sensor is showing a persistently low exhaust oxygen content (rich), despite the efforts of the ECM to decrease injector on-time (thus decreasing fuel delivered). Integrator and BLM numbers may indicate < 128 by a substantial margin.
The conditions for setting this code are:
no Code 34 or Code 35 (MAF error) present, and
the O2 sensor voltage remains above 752 mV, and
the ECM is in Closed Loop control, and
throttle position is < 2 percent or > 20 percent, and
the above conditions exist for more than 20 seconds.
Typical causes for this code include:
1) O2 sensor defective or contaminated (if incorrect RTV sealant or too much RTV is used, this may happen)
2) Leaking fuel injectors
3) Fuel pressure too high
4) EMI interference from poor plug wires
5) Evaporative Emission system defect
6) TPS and/or EGR problem
7) MAF sensor reading higher airflow than is actually present
**************************************************
Here is what i have looked at so far corresponding to the list above:
1. from my scanmaster o2 readings i assume the o2 sensor is ok..it is bouncing back and forth in the number range it should be.
2. don't know how to check for leaky fuel injectors...but i just the blue tops about 3000 miles ago.
3. fuel pressure is set correctly
4. tried different set of plug wires and replaced plugs
5. Don't know how to check this
6. throttle position sensor has correct values at full an no throttle and egr seems to function correctly(if you push up on the bottom of the diaphram the car stumbles)
7. Don't know to check this
Any help or suggestions would be greatly appreciated.
TIA
