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1989 Mercury Grand Marquis GS 5.0L MIL Lamp on
Please be patient with me guys, I'm a long time GM tech with no experience with Fords. This vehical came in for the fourth time now with the same 2 codes and now I'm getting nervous! The first time another tech here replaced the EGR valve and sensor. The s...
FIX posted 6/11/1999
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Message Closed w/FIX
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| VIN | 2MEBM74F4K |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | US Fed |
| Symptoms | MIL Lamp On |
| Occurs | On Decel, on Accel, Intermittently |
Trouble Codes
| 31 | EVP voltage out of specs |
| 34 | EVP voltage high when closed |
Message Closed w/FIX
Vehicle Data
1989 Mercury Grand Marquis GS
| VIN | 2MEBM74F4K |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | US Fed |
| Symptoms | MIL Lamp On |
| Occurs | On Decel, on Accel, Intermittently |
Trouble Codes
| 31 | EVP voltage out of specs |
| 34 | EVP voltage high when closed |
Video