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1988 Mercury Grand Marquis GS 5.0L MIL Lamp on
IT IS TIME FOR MY FIRST POST AND SHOUT FOR HELP another tech had done the t'stat and I have inherited the beast now. There are no codes on a KOEO test except code 11 systems passed. Codes 12,44,94 occur only when KOER test is done. Enhanced Monitor 4000 scanne...
FIX posted 11/5/1998
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| VIN | 2MEBM74F6J |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SFI |
| Emissions | Federal |
| Symptoms | MIL Lamp On |
| Occurs | Always |
| Misc. | Currently Used as Taxi |
Trouble Codes
| 12 | Idle RPM Low |
| 44 | Thermactor System |
| 94 | Thermactor System |
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Vehicle Data
1988 Mercury Grand Marquis GS
| VIN | 2MEBM74F6J |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SFI |
| Emissions | Federal |
| Symptoms | MIL Lamp On |
| Occurs | Always |
| Misc. | Currently Used as Taxi |
Trouble Codes
| 12 | Idle RPM Low |
| 44 | Thermactor System |
| 94 | Thermactor System |
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