2003 TBIRD HEATER DOOR STUCK OPEN

Asked by Aug 21, 2016 at 08:29 PM about the 2003 Ford Thunderbird

Question type: Maintenance & Repair

MY COOLANT IS FINE, COMPRESSOR WORKING BUT HOT AIR MIXED WITH
COOL AIR COMES OUT OF LEFT CENTER VENT AND FAR LEFT VENT.
RIGHT VENTS HAVE SAIME PROBLEM, BUT NOT AS HOT. I THINK  A
HEATER DOOR IS STUCK. ANY WAY TO UNSTICK IT WITHOUT DASH
REMOVAL?

1 Answer

14,185

Inspect the (DCCV) Dual Coolant Control Valve, under the hood lower front right. Use a multimeter to check voltage on circuit for Brown / Green drivers side and Brown / Light Green passengers side. Set temp to 60 expect 3.0 volts as increased to 90 voltage should increases to 9 volts... check both sides If OK,Try the self-check feature on the A/C. To test the A/C on your car do this to the A/C panel: With the car running and the A/C off: Press the OFF and DEFROST buttons simultaneously, then release and press the AUTO button within two seconds. Let the test run...it will last about 30-45 seconds. If any numbers are displayed, write them down. Press any button to exit the test. WAIT one minute before doing anything else, including turning off the car...DO NOT, do anything for at least a minute.

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