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1992 Ford Ranger S 3.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy
Dear techs: This is one Rich Running Ranger. After doing the basics like FP, pulling PCV & canister purge hoses, I figured I had a MAF problem because of the rich & lean codes, but no such luck. I first cleaned the MAF but it didn't help. MAF volts at hot idle...
FIX posted 9/29/2005
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Related Documents & Media | VIN | 1FTCR10U4N |
| Engine | 3.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SEFI |
| Emissions | US Fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always |
Trouble Codes
| 137 | Sys rich |
| 172 | O/2 not switching lean B1 |
| 173 | 0/2 not switching rich B1 |
| 176 | O/2 not switching lean B2 |
| 177 | O/2 not switching rich B2 |
Message Closed w/FIX
Vehicle Data
1992 Ford Ranger S
| VIN | 1FTCR10U4N |
| Engine | 3.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SEFI |
| Emissions | US Fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always |
Trouble Codes
| 137 | Sys rich |
| 172 | O/2 not switching lean B1 |
| 173 | 0/2 not switching rich B1 |
| 176 | O/2 not switching lean B2 |
| 177 | O/2 not switching rich B2 |
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