Used 1998 Buick Century, missing -both- heater/ac door actuators

" act "??

2004 Buick Century A/C Heater Blend Door Actuator

AutoZone https://www.autozone.com > buick > century > 2004

Dorman HVAC Door Actuator 604-107 · Part # 604-107 · SKU # 575021 · limited lifetime warranty Limited-Lifetime Warranty · 4.8. (17). 4.8 out of 5 stars. 17 ...

NOS 2004 BUICK CENTURY HEATER BLEND DOOR ...

eBay https://www.ebay.ca > ... > HVAC Vent Actuators

NOS 2004 BUICK CENTURY HEATER BLEND DOOR ACTUATOR 52404369 HVAC ; Breathe easy. Returns accepted. ; Fast and reliable. Ships from United States. ; Condition. New ...

Buick Century for HVAC Vent Actuators for 2004

eBay https://www.ebay.ca > ... > HVAC Vent Actuators
Dorman 604-107 HVAC Air Door Actuator fits Buick Century · C $42.80 ; 2 Heat Heater A/C Fan Air Vent Blend Door Actuator for Chevy GMC Pickup 15-72971 · C $46.84 ...

2004-2005 Buick Century Air Flap Actuator - DIY Solutions ...

Parts Geek https://www.partsgeek.com > Buick Parts > Century Parts
HVAC Heater Blend Door Actuator Set 2 Piece Set - 2004-2005 Buick Century - DIY Solutions 17810-02555053. Review Fitment Notes. Part Number: 17810-02555053.
US$47.95

..

There's only one evaporator core, so if you're getting cold on one side and not the other, then the blend door isn't working on the warm side. The actuator motor may be working but the door might not be moving.

First, check coolant level. If it's low, it'll blow cool air. Second, check the fuse for the HVAC system. The mode door actuator and mode door controls WHERE the air comes out and the BLEND door actuator and blend door controls the air temperature. So do a search for the locations of those items on your car and check their operation.

The electric control actuator more then likely ! Do you hear any clicking come from behind the instrument panel . These actuators have plastic gears inside and they break , strip etc... Can also set DTC'S - diagnostic trouble codes to set in the HVAC - control panel (module ) A scan tool used to check engine codes can't read these codes . Need a factory scan tool or professional grade .
DTC B0361
The HVAC control module receives a left air temperature actuator position signal from the left air temperature actuator. The left air temperature actuator position sensor is a potentiometer that is tied to a 5 volt reference source. The variable output from the potentiometer feeds back a position signal to a pull-up resistor located in the HVAC control module. This signal is used to determine the necessary drive signal to the left air temperature actuator motor to provide the proper air mix door position. This value is stored in the Keep Alive Memory (KAM) portion of the HVAC control module.
DTC B0363
Left air temperature actuator signal circuit stays at 4.5 volts or higher.

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Temperature Valve Actuator Replacement - Left Side
Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Replacement in Instrument Panel, Gauges and Console.
Remove the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gauges and Console
Disconnect the electrical connector from the left air temperature actuator.
Remove the mounting screws from the left air temperature actuator.
Remove the left air temperature actuator.

How To Install Replace AC Heater Temperature Actuator ...

? 4:40
https://www.youtube.com/watch?v=mVP09M7hLB4
Jul 21, 2014 - Uploaded by 1A Auto Parts
http://www.1aauto.com/temperature-blend-door-actuator/i/1ahcx00293 ... How To Remove Install Door Chevy Monte Carlo Pontiac Grand Prix ...

GM Blend Door Actuator Repair (Saturn, Chevy, GMC, Buick ...

? 4:28
https://www.youtube.com/watch?v=fER3ZqnYLZg
Jul 11, 2014 - Uploaded by willmacneill
The procedure is the same for most GM blend door actuatorsfrom 1990-2013 (found in many vehicles made by Chevy, GMC, Buick, Pontiac, ...

Mode/Temperature Door Actuators May Fail : Pontiac ...

first, check under te hood to see if the heater core water hoses are hot going in and coming out. If hot going in but cold coming out, water valve (if you have one) may not be working.
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Control System Outputs
The air management doors are controlled by vacuum control motors (18A318) and an A/C electronic door actuator motor (19E616). The air inlet and distribution doors are controlled by vacuum control motors. The temperature blend door is controlled by the A/C electronic door actuator motor.
The A/C electronic door actuator motor provides a variable number of temperature blend door positions. Temperature control position energizes the A/C electronic door actuator motor moving the temperature blend door.
Vacuum control motors are used on both air distribution and air inlet doors. The air inlet and panel/defrost doors use a two position vacuum control motor. The floor duct/panel door uses a three position vacuum control motor. Vacuum control motors are controlled by engine vacuum through the climate control head.
For more information on the control components Section 412-04 .
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Air Management Doors
The air management doors are controlled by vacuum control motors (18A318) and an A/C electronic door actuator motor (19E616). The air inlet and distribution doors are controlled by a vacuum control motor. The temperature blend door is controlled by the A/C electronic door actuator motor.
The A/C electronic door actuator motor provides a variable number of temperature blend door positions. Temperature control position energizes the A/C electronic door actuator motor moving the temperature blend door.
Vacuum control motors are used on both air distribution and air inlet doors. The air inlet and panel/defrost doors use a two position vacuum control motor. The floor duct/panel door uses a three position vacuum control motor. Vacuum control motors are controlled by engine vacuum through the climate control head.
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Section 412-04: Control Components - Climate Control 1997 F-150, F-250 Workshop Manual
REMOVAL AND INSTALLATION A/C Electronic Actuator
Removal

1. Remove the floor duct panel.
   • Remove the two plastic push pins (one each side) and release the expander clip.

1. Remove the RH instrument panel brace.
   1. Remove the lower nut.
   1. Remove the upper bolt.
   1. Remove the brace.

1. Remove the LH instrument panel lower nut and position brace out of the way.

1. Disconnect the vacuum harness from the vacuum actuator.

1. Remove the floor duct.
   1. Remove the two screws (one each side).
   1. Remove the floor duct.

1. Remove the panel/floor door vacuum control motor.
   1. Disconnect the vacuum line connector.
   1. Remove the two panel/floor door vacuum control motor screws.
   1. Slide the rod out of the door and remove the panel/floor door vacuum control motor.

1. Remove the electronic actuator.
   1. Disconnect the electrical connector.
   1. Remove the three screws.
   1. Pull down to release the actuator shaft and remove the electronic actuator.

Check fuse 17 at the fuse panel.

start here



B3 MANUAL A/C ELECTRONIC DOOR ACTUATOR SUPPLY VOLTAGE CHECK

• Disconnect A/C electronic door actuator motor connector located on the evaporator case and accessed through the glove compartment opening.

• Using a test lamp, check for battery voltage between Circuit 247 and Circuit 246.

• Did test lamp illuminate?

Pin Number Circuit Circuit Function 1 - Not Used 2 - Not Used 3 351 (BR/W) Control Potentiometer Wiper 4 243 (LG/O) Control Potentiometer Ground 5 - Not Used 6 470 (PK/BK) Control Potentiometer B+ 7 247 (W/Y) Actuator B+ 8 246 (P) Actuator Ground

CHECK POWER WINDOWS 20 AMP CIRCUIT BREAKER.

I ASSUME THIS IS A 98, THIS PROBLEM IS CAUSED BY A PART CALLED AN "AIR TEMPERATURE CONTROL BLEND DOOR ACTUATOR MOTOR" THIS MOVES A DOOR BETWEEN THE COLD AIR FROM THE AC AND THE HOT AIR FROM THE HEATER CORE, YOU WILL NEED TO REPLACE THAT ACTUATOR. .

Hi,I am Ron,The car manufactures have gone over board with the new way of designing the ac/heater system.They got away from the simple vacuum operating system,and went to actuator motors to open and close ,and blend the air that keeps you comfortable.The problem with your car is in fact,a door actuator motor,that has went out.The actuator motor that you want is located behind the dash,some are reachable threw the glove box(after you remove glove box).The process of elimination is the best way to see if it is the right actuator motor giving problems.You can actually see the actuator motor turn when you select a task for the ac control to perform.Go threw and select one at a time a function for the ac to perform.When you get to the defrost,vent, and floor,look for the actuator motor that does not move.This is the one to remove.It might have three or for screws holding down.This will not be easy to get a socket or wrench on,much less turn the screw.But if you need anymore help,please [email protected]