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2000 Chevrolet Blazer LS 4.3L MIL Lamp on
Vehicle came in with 650 miles, dtc's PO172 and Po175, rich exhaust. Now after two new HO2 sensors and at 2210 miles I get it. Injector bal. ok, fuel press. ok, no drop in press. Exhaust not restricted, air filter and air intake ok. Tried maf sens from vehicle...
FIX posted 1/10/2001
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Related Documents & Media 
| VIN | 1GNDT13W9Y |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sfi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) |
| P0175 | Fuel System Too Lean (Bank 2) |
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Vehicle Data
2000 Chevrolet Blazer LS
| VIN | 1GNDT13W9Y |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / sfi |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) |
| P0175 | Fuel System Too Lean (Bank 2) |
Video