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1987 Mercury Grand Marquis LS 5.0L Vacuum Loss
This car came in with the complaint of always going from cold to hot driving down the road. I hooked up a vacuum gage to the Blend door servo and test drove the car. The servo looses vacuum @ a constant speed of 35 - 45 MPH. I tested the actuators with a vacuu...
FIX posted 11/12/1999
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Related Documents & Media 
| VIN | 2MEBM75FQH |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Affected | Vacuum Loss |
| Conditions | Blend Door Vacuum Loss |
| Misc. | Ca. Emissions |
Message Closed w/FIX
Vehicle Data
1987 Mercury Grand Marquis LS
| VIN | 2MEBM75FQH |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Affected | Vacuum Loss |
| Conditions | Blend Door Vacuum Loss |
| Misc. | Ca. Emissions |
Video