actuator door is Code 024. I was getting NO HEAT from any vents. To diagnose the Automatic temperature control on this (or YOUR) car follow this sequence.
Turn the Heat'AC "OFF"
Press at the SAME TIME, "OFF" & "FLOOR" , then
Press "AUTOMATIC".
The Display will turn a digital circle for awhile until it will stop on it's own to display any Error Codes. In my case it displayed a steadt "024". That means "Door Actuator". In fact while it is diagnosing you can hear it trying to Reset the door by a repetitive clicking sound.
After doing this self-diagnose/Resaet sequence three(3) times, WARM air finally started coming out the heater vent. (It was late night & freezing at the time.)
This has happened about four(4) times over six (6) months. Each time I was eventually able to get warm air again by repeating the above steps. I am afraid it won't continue to work & that I will be trapped in freezing weather. The car has been very well maintained & only just turned 50,000 miles.
Anyone else familiar with this problem?
Thanks, PontiacManiac (with a Merc daily driver!)
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Very common issue - the temperature blend door actuator has a stripped gear in the motor. It will need replaced. It's a blessing that it works SOMETIMES...most fail entirely and just click-click-click away...
Unfortunately, you have to remove the dash to get to it...
