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1994 Ford Ranger STX 4.0L Loss of power
Please help, This truck came in with with complaint of missing and lack of power. Scoped eng. could not find ign. problem so scaned computer, found code 171, bank 1 o2 not switching. Used Vantage to check o2 sensor, replaced with carquest, it works, cleared co...
FIX posted 7/1/2000
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| VIN | 1FTCR11X4R |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / SEFI |
| Emissions | Not OBD-II Compliant |
| Symptoms | Loss of Power |
| Occurs | Under Load |
| Misc. | 4X4 Fed.ems No A/C Dis Ign. |
Trouble Codes
| 171 | Bank 1 02 not switching |
Message Closed w/FIX
Vehicle Data
1994 Ford Ranger STX
| VIN | 1FTCR11X4R |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / SEFI |
| Emissions | Not OBD-II Compliant |
| Symptoms | Loss of Power |
| Occurs | Under Load |
| Misc. | 4X4 Fed.ems No A/C Dis Ign. |
Trouble Codes
| 171 | Bank 1 02 not switching |
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