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1994 Mazda B4000 SE 4.0L Poor Fuel Economy, MIL Lamp on
This truck sets 173, 186 only on a hard pull. 173 is for bank 1 indicates rich but if you monitor the o2 on either side it indicates rich on a hard pull. It passes KOER test. You can accelerate normal and o2,s switch normal. Fuel pressure is 32 at idle, 42 wit...
Summary posted 6/19/2002
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Related Documents & Media | VIN | 4F4DR17X3R |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SEFI |
| Emissions | US Fed emissions |
| Symptoms | Poor Fuel Economy, MIL Lamp On |
| Occurs | Under Load |
Trouble Codes
| 173 | system indicates rich bank one |
| 186 | injector pulsewidth higher or MAF lower than expected |
Message Closed w/Summary
Vehicle Data
1994 Mazda B4000 SE
| VIN | 4F4DR17X3R |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SEFI |
| Emissions | US Fed emissions |
| Symptoms | Poor Fuel Economy, MIL Lamp On |
| Occurs | Under Load |
Trouble Codes
| 173 | system indicates rich bank one |
| 186 | injector pulsewidth higher or MAF lower than expected |
Video