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1986 Mercury Grand Marquis 5.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy
Posted to Ford Driveability on 12/23/2010 18 Replies

This car is running pig rich at all times. The O2 sensors are reading .95 volts. Fuel pressure is well within spec at 37 [...] system holds pressure. The vacuum hose at the regulator has been disconnected. The pcv valve has been removed from the block. The pur...

18 Replies Received (View Replies)

  Related Documents & Media  1986 Mercury Grand Marquis

 
Message Closed w/Summary

car Vehicle Data

1986 Mercury Grand Marquis

VIN 2MEBP95F3G
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / SEFI
EmissionsCA Emission
SymptomsExcessive Emissions, Poor Idle Quality, Poor Fuel Economy
OccursAlways
Message Closed w/Summary

car Vehicle Data

1986 Mercury Grand Marquis

VIN 2MEBP95F3G
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / SEFI
EmissionsCA Emission
SymptomsExcessive Emissions, Poor Idle Quality, Poor Fuel Economy
OccursAlways