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Send PMFt.Lauderdale, FL - USA
Joined: 6/21/2008
Posts: 31
Vette(s): 78 coupe, Dk Brown, ZZ4 385 hp fast burn, steeroid rack/pinion, Keisler 5 speed. Built to run with C5 and C6. on the highway. Can't beat them. But they can't lose me in there mirrors. LOL I built it to enjoy. So far I've tripped through 15 States.
Now my A/C is cold.
Took her out today a drove around town. In traffic, red lights and all. With the A/C on max. And the windows up.
After all these years messing with everything. And the best I got was cool and humid air.
All the time it was the water shut off switch behind the clove box. If anyone with a 78 vette with this problem. Check and make sure the HOT/COLD cable is pressing on the water shutoff switch. Now I have the A/C fixed, I can't afford the gas to enjoy it.
Brown78 2008-07-11 13:25:46
Took her out today a drove around town. In traffic, red lights and all. With the A/C on max. And the windows up. After all these years messing with everything. And the best I got was cool and humid air. All the time it was the water shut off switch behind the clove box. If anyone with a 78 vette with this problem. Check and make sure the HOT/COLD cable is pressing on the water shutoff switch. Now I have the A/C fixed, I can't afford the gas to enjoy it. Be the first to like this post
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K
COOL!!! 
You mentioned the water shutoff switch behind the glove box. Is that responsible for cutting off coolant from passing through the heater core?
I'm glad it worked out for you.
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B
Free Member
Send PMFt.Lauderdale, FL - USA
Joined: 6/21/2008
Posts: 31
Vette(s): 78 coupe, Dk Brown, ZZ4 385 hp fast burn, steeroid rack/pinion, Keisler 5 speed. Built to run with C5 and C6. on the highway. Can't beat them. But they can't lose me in there mirrors. LOL I built it to enjoy. So far I've tripped through 15 States.
I really don't know. I followed the line out to through the fire wall and over to the A/C and the vacuum line went to this diaphragm on a heater hose. What I found out is this type shutoff switch is only on 78 and 79. There is other shutoff switches for other model years but I don't know where they are hidden.. My A/C kick a$$ now in the low 50* at 2 PM in South Florida Sun.
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