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Acutator is a small vacuum powered motor used to open and close diverter to direct air either to defrost, floor, or vents
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∙ 13y ago
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Why in 1995 Chevy lumina heat does not blow out vent?
Check for vacuum leak either under hood or under dash Check for bad vacuum actuator under dash
Blows out cold air threw defroster but not the ac vents?
Check for vacuum leak either under hood or under dash Check for bad vacuum actuator under dash Defrost is the default setting
Why does my 1996 Alitma AC and heat only works on the deforst setting?
Check for a vacuum leak either under hood or under dash or bad vacuum actuator under dash - defrost is the default setting for this model
Where is the vacuum switch for the fan in a 1996 Chevy Blazer?
The vacuum switch/actuator for the fan shutter is under the dash directly below the radio . IT is NOT easy to get to.
Do you know what the noise is under the passenger side dash sounds like a vacuum problem?
probably an actuator vacuum operated to open/close heat vents
What is wrong when you cut the ac switch on and it only blows on the floor and the defrost but no air is circulating through the front vents no matter what setting you turn the switch to.00' cavalier?
Check for vacuum leak either under hood or under dash Check for bad vacuum actuator under dash Check for bad selector switch in dash
Where is Vacuum leak under dash?
defrost or a/c compartment under the dash
Where is the actuator for 98 Chevy Blazer?
the temperature control actuator is on top of the heater box under the dash. you have to remove the dash to get at it. a repair manuual will show what screws to remove
Why wont your 2001 Chevy Blazer kick into 4-wheel drive you can hear it switch over the but the light just blinks on the dash and wont lock in to any four wheel drive?
It will either be the vacuum solenoid (actuator) located under the battery tray or the electronic solenoid on the front differential. Most commonly it is the vacuum solenoid (actuator). Once you take the battery and battery tray out you will see the rubber bladder of the vacuum solenoid (actuator) if it is torn or busted replace it. Check the vacuum solenoid (actuator) located under the battery and battery tray. It could also be the vacuum solenoid located on the firewall above the distributor (approx. 3"x1")
Your heater is blowing but hot air isn't getting to the vents?
It is probably a lack of vacuum to the actuator that controls the air doors. Check for hissing noises under the dash and make sure all vacuum lines uinder the hood are connected and not kinked.
Can a vacuum leak cause a blend door to not work?
Most temp blend doors have an electric actuator. The defroster, dash vents and floor vents are usually run by vacuum.
Why does hot air still flow when you have replaced the door blend actuator?
most likely a vacuum leak or faulty control on the dash
