95 vette heater, AC bypass valve

[Joe C.]

does any one have a photo of the heater/ac bypass valve hooked up under right valve cover of a 95 vette? i have replaced my ac programer as well as ac module and i still have ac coming out of defroster, i purchased a new one but i'm not sure my old one might not be intalled correctly. thanks for any help.

[David H.]

Re: 95 vette heater, AC bypass valve

does any one have a photo of the heater/ac bypass valve hooked up under right valve cover of a 95 vette? i have replaced my ac programer as well as ac module and i still have ac coming out of defroster, i purchased a new one but i'm not sure my old one might not be intalled correctly. thanks for any help.

Joe

Defroster is default position for HVAC air flow. One cause for defroster only is a vacuum leak. You might check under hood HVAC controls vacuum supply lines for leaks (passenger side). You noted replacement of "ac module" - was this the under dash controller that has multiple vacuum lines running into it? Later C4 has a vacuum controller utilizing rubber nipples connecting lines to controller. These rubber nipples can internally collapse blocking vacuum control. (Earlier C4 connection was hard plastic).

Dave

[Ed N.]

Re: 95 vette heater, AC bypass valve

does any one have a photo of the heater/ac bypass valve hooked up under right valve cover of a 95 vette? i have replaced my ac programer as well as ac module and i still have ac coming out of defroster, i purchased a new one but i'm not sure my old one might not be intalled correctly. thanks for any help.

Is this what you are looking for?

47150.jpg

Here it is installed. The front nose of the valve goes to the front as you can see. The others are self explanatory.

Bypass Valve.jpg

[Joe C.]

Re: 95 vette heater, AC bypass valve

I replaced ac module under dash and checked hoses and nipples , everything looked ok. I saw on rt side under valve cover a bypass set up, I wasn't sure if it is connected correctly, thats why I was hoping someone had a pic of it, so I could check my connection.

[Joe C.]

Re: 95 vette heater, AC bypass valve

thanks for pic, yes. thanks again.

[Joe C.]

Re: 95 vette heater, AC bypass valve

just to wrap up thread. checked hoses under dash, and fixed problem had small leak in that hose. replaced and everything now works fine. ac is coming out dash vents. whew what a job. thanks for all your help in this.

[Ed N.]

Re: 95 vette heater, AC bypass valve

Glad it worked out for you.