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1994 Mercury Sable GS 3.8L Misfire
Vehicle came in with intermittant MIL, customer did not complain of any driveability problem, but I noticed miss immediately. Traced miss to #2, checked for spark, fuel and compression. Just for kicks, I replaced cap and rotor, plug, and wire, injector functio...
FIX posted 4/30/2001
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Related Documents & Media 
| VIN | 1MELM5040R |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Symptoms | Misfire |
| Occurs | Always |
Trouble Codes
| 172 | EGO not switching Bank 1 |
| 175 | ego |
| 176 | EGO Not switching lean exhaust bank 2 |
| 177 | EGO Not switching rich exhaust band 2 |
| 189 | Cruise rich limit bank 2 |
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Vehicle Data
1994 Mercury Sable GS
| VIN | 1MELM5040R |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Symptoms | Misfire |
| Occurs | Always |
Trouble Codes
| 172 | EGO not switching Bank 1 |
| 175 | ego |
| 176 | EGO Not switching lean exhaust bank 2 |
| 177 | EGO Not switching rich exhaust band 2 |
| 189 | Cruise rich limit bank 2 |
Video