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What is a vacume pump for an ac?

Updated: 12/20/2022
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Q: What is a vacume pump for an ac?
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Related questions

2002 gmc sonoma v6 HVAC controls apply correct function just not correct vent or outlet everything comes out the heat and defrost nothing out the vents help please?

the selector switch is a vacume and electric switch that activates the pnumatic vents, ac and fan. on the back of the selector there are tubes that feed a vacume to the vent flaps and a three wire plug for ac and fan control. if you lose vacume the vent flaps stay in the defrost and floor position but the ac and fan will still work. on my sonoma the vacume line came disconected under the hood. the vacume feed exits the firewall on the drivers side right next to electrical harness.


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They have no reset. An ac pump has no memory board.


How do you change the fluid in the transfer case on your 1989 Ford full-size Bronco 4.9L and what fluid should you use?

I used a 1/2 gallon pickle jar and a hand vacume pump. Install two fittings in the lid of the jar and attach the hose from the vacume pump to one fitting. Attach a second hose to the other fitting and put it into the transfer case through the fill hole. When you pump the vacume handle it will create a vacume in the pickle jar and suck out the fluid. It helps if the fluid is warm, and you have to keep moving the hose around. I have used this setup to remove all types of fluids.


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On a 1992 Chevy lumina euro can not get the ac to blow air out the proper vents?

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The ac pump may be seized up.


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The wires going into the AC pump 1995 Chevy K2500 are the red-marked wires.