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1999 Mercury Grand Marquis LS 4.6L Heater
Posted to Ford HVAC on 6/14/2013 6 Replies

Well the problem with this car is that after you drive it for a while the automatic heater goes to full hot and will not change unless you put it in diagnostic mode, it then will work for a while, a week, a month it varies. When it locks on heat the temp will ...

6 Replies Received (View Replies)

  Related Documents & Media  1999 Mercury Grand Marquis LS

 
Message Closed w/FIX

car Vehicle Data

1999 Mercury Grand Marquis LS

VIN 2MEFM75W0X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedHeater
ConditionsInop
Message Closed w/FIX

car Vehicle Data

1999 Mercury Grand Marquis LS

VIN 2MEFM75W0X
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedHeater
ConditionsInop