84 cutlass supreme air conditioner help

[maxgecko]

Hey guys, i really need some help, when i turn my air-conditioner on no matter what i set it to , all i get is the exhaust out of the vents for the defroster, i don't get anything out of the dash vents, what can i do to track down the problem?

 

[v2vera]

I had the same problem with my Regal when I first got it. I changed some vacuumes and connected some that were disconnected under the hood near the a/c unit and seemed to fix the problem. Just a wild guess though...

 

[Bonnewagon]

Check the vacuum lines on the motor side. Be sure they are all hooked up. There should be a vacuum reservoir/amplifier looks like a black ball, it's easy to blow the vacuum line off when the car backfires.

 

[maxgecko]

Ok, I checked the vacuum reservoir/amplifier, the black ball, and it only has one line coming out of it on the side, and that goes to a "T" and splits off and each of those lines go to the windshield washer squirters

 

[Bonnewagon]

That's wrong. There should be 2 t*ts for hoses on the ball, maybe one is busted off. It gets a black hose which comes from a manifold vacuum source, and a purple hose goes to the dash controller. If you have a water valve that shuts off hot water in AC mode, that is a grey hose. And the ww squirters hoses come from the washer pump on the ww washer motor.

 

[maxgecko]

is there any way you or someone can snap a photo from under the hood of a 84 cutlass supreme, and point it out to me, if need be i can snap one from under my hood, and then i would only need someone to point it out for me, please let me know

 

[Bonnewagon]

This is an 83' Bonneville. Should be similar if not identicle.

 

[darbysan]

Some vehicles only have one connection to the ball- like my El camino. The tee fitting allows the Purple line to the HVAC and the ball to be connected. Be sure that the line has a check valve as well, between the source and before the Tee, so that vacumn is maintained in the ball should the vacumn source be turned off ( engine shut down).

HVAC
||
TEE ----check valve----vac source
||
ball

If you have Cruise Control, a second line could be Teed into either the Ball or HVAC line going to the Cruise Control Servo ( Depending on year).