2010 Mercury Grand Marquis
CRM Mitchell1 2020-04-07T22:00:18+00:00
Mileage
70,716
Service Date
3/27/2020
Services Performed
- TECHNICIAN STATES ROAD TESTED VEHICLE. EXPERIENCED ISSUES DESCRIBED BY CUSTOMER. RAN TEST ON HEATER BOX ASSY. HEATER BOX DOORS ARE NOT MOVING WHEN COMMANDED. ALSO NOTES BLEND AIR DOOR THAT ALLOWS HOT/COLD AIR FLOW HAS NO ACTIVITY FROM IT. DASH WILL HAVE TO BE REMOVED TO ACCESS BLEND AIR DOOR ACUATOR AND TO TEST HEATER BOX DOORS FURTHER. TECHNICIAN STATES REMOVED DASH ASSY FROM VEHICLE ALLOWING ACCESS TO HEATER BOX ASSY AND ALL COMPONENTS. A/C AND HEATER SYSTEM ARE OPERATED BY VACUUM PRESSURE AND ELECTRICAL CURRENT. TECHNICIAN REMOVED BLEND AIR DOOR ACUATOR. APPLYING POWER TO BLEND DOOR ACUATOR TECHNICIAN STATES NO ACTIVITY PRESENT FROM ACUATOR. INTERNAL FAILURE ON BLEND DOOR ACUATOR. RECOMMEND REPLACING. TECHNICIAN REMOVED A/C CONTROL HEAD – HVAC CONTROL MODULE FROM VEHICLE. PHYSICALLY APPLIED HAND HELD VACUUM PRESSURE TO ALL VACUUM DRIVEN DOORS INSIDE HEATER BOX. ALL HEATER BOX DOORS OPENED AND CLOSED WHEN FACTORY SPECIFIC AMOUNT OF VACUUM PRESSURE APPLIED. TECHNICIAN RE-INSTALLED A/C CONTROL HEAD – HVAC CONTROL MODULE. THE A/C CONTROL HEAD – HVAC CONTROL MODULE HAS AN INTERNAL PORTION THAT CONTROLS ALL VACUUM RELATED TO THE HEATER BOX DOORS. TECHNICIAN MONITORED AMOUNT OF VACUUM PRESSURE COMING FROM A/C CONTROL HEAD – HVAC CONTROL MODULE. FOUND THE AMOUNT OF VACUUM WAS NOT ENOUGH TO OPERATE HEATER BOX DOORS. INTERNAL FAULT IN THE A/C CONTROL HEAD – HVAC CONTROL MODULE. TECHNICIAN INSTALLED NEW A/C CONTROL HEAD – HVAC CONTROL MODULE. TECHNICIAN INSTALLED NEW BLEND AIR DOOR ACUATOR. INSTALLED DASH ASSY AND ALL APPLICABLE PARTS. ROAD TESTED VEHICLE. HOT OR COLD AIR BEING RELEASED AS COMMANDED BY DRIVER. HEATER BOX DOORS WORKING AS COMMANDED BY A/C CONTROL HEAD – HVAC CONTROL MODULE. CURRENTLY A/C BLEND AIR DOOR ACUATOR AND A/C CONTROL HEAD – HVAC CONTROL MODULE WORKING AS DESIGNED FROM THE FACTORY.
PAUL C. gave our service a 5 star review on 4/4/2020
