can not change heating temp. changed from 80 degrees to 60 degrees still come out hot
heating-control on 2005 Mercury Grand Marquis
2 answers 3 comments
Temp/blend door actuator would be the most common problem, now changing it another job.
Is that the same as heater control valve
No. It's a small motor in a plastic box that mounts on the top middle of the heater box under the dash that controls or turns the door from the a/c to the heater core. Just changed one last Friday. Have done many over the years.
adv you nave it done as not to break the doors