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Topic: A/C finally works

in Forum: C3 Cooling and Heating Systems


A/C finally works

Posted: 4/22/06 10:23pm Message 1 of 25
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Moses Lake, WA - USA
Joined: 4/16/2005
Posts: 2134
Vette(s): 1976 L48 4-spd, Mahogany Metalic exterior, Buckskin interior 350ci/350hp, 3rd owner, fiberglass spring, 255/50-16's Torq-Thrust II
Finally got the A/C working today. Looks like the only problem was low on charge. When I got the vette, the owner told me it did not work but did not know why. I just assumed the system had a problem and put it towards the bottom of the to do list. Well it works great now. No more sticking to the seats in August


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A/C finally works

Posted: 4/22/06 10:50pm Message 2 of 25
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Fox Island, WA - USA
Joined: 6/20/2005
Posts: 4067
Vette(s): 1978 Indy Pace Car 4851 of 6502, Auto, L-48
Hahaha just in time for Hot Tennessee Nights   Thats great, good job Glen


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A/C finally works

Posted: 4/23/06 4:56pm Message 3 of 25
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Very Cool !

Okay it's a bad pun, but still a good thing.




A/C finally works

Posted: 4/23/06 5:14pm Message 4 of 25
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DeBerry, TX - USA
Joined: 2/27/2002
Posts: 1006
Vette(s): 1971 383 Stroker- mille miglia red...5 speed
 I had an aftermarket a/c installed a short time ago. It blows cold air.....no problem there. My question is... should it pull the idle down 400-450 rpm's when turned on at idle? If I have it on and stop, like at a light, I have to feather the gas or it will likely die.  The installer did mention that I may have to put in a solenoid to kick up the idle when it's turned on. Sound right?  Of course they also said that the reason my headlights and wiper cover now come up when I turn off the motor is because the check valve going to the vacuum canister and dash didn't work.  Not worried about the vacuum right now, but whadda ya'll think about the a/c. I'm gonna need that to work right in June!


   I know the voices aren't real, but they have some pretty cool ideas...

A/C finally works

Posted: 4/23/06 5:44pm Message 5 of 25
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Moses Lake, WA - USA
Joined: 4/16/2005
Posts: 2134
Vette(s): 1976 L48 4-spd, Mahogany Metalic exterior, Buckskin interior 350ci/350hp, 3rd owner, fiberglass spring, 255/50-16's Torq-Thrust II
I don't have a solenoid on mine and it idles fine. It will drop the rpm a little when the compressor kicks on. I am not sure how much but will check it out and let you know. Can you set your RPM a little higher to compensate?


A/C finally works

Posted: 4/23/06 5:57pm Message 6 of 25
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DeBerry, TX - USA
Joined: 2/27/2002
Posts: 1006
Vette(s): 1971 383 Stroker- mille miglia red...5 speed
 I have it set at about 1000 rpms now to keep it from dying when I turn it on.


   I know the voices aren't real, but they have some pretty cool ideas...

A/C finally works

Posted: 4/23/06 6:03pm Message 7 of 25
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CUYAHOGA FALLS, OH - USA
Joined: 12/2/2003
Posts: 6424
Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Many cars did use an idle kicker solenoid.  Some did not need them.  But the way your idle drops, it would be a good idea, and solve your problem.

It just mounts at the front of the carb, and uses the same power wire that goes to the compressor.  When the A/C is on, the idle kicks up.  The factory ones kept the idle up the whole time the A/C was on, not just when the compressor kicked in.




A/C finally works

Posted: 4/23/06 6:22pm Message 8 of 25
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DeBerry, TX - USA
Joined: 2/27/2002
Posts: 1006
Vette(s): 1971 383 Stroker- mille miglia red...5 speed
 Thanks Ken. So you thinks that pretty much normal to drop 400-450 rpms when the a/c is turned on?


   I know the voices aren't real, but they have some pretty cool ideas...

A/C finally works

Posted: 4/23/06 6:24pm Message 9 of 25
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East Hanover, NJ - USA
Joined: 9/25/2004
Posts: 525
Vette(s): '68 Black Conv. Matching 327/300 4 Spd. P/S, P/B, P/W, Tele, A/C

Way to go Glen...........!

Hopefully I will be able to say the same soon.




A/C finally works

Posted: 4/23/06 6:54pm Message 10 of 25
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Moses Lake, WA - USA
Joined: 4/16/2005
Posts: 2134
Vette(s): 1976 L48 4-spd, Mahogany Metalic exterior, Buckskin interior 350ci/350hp, 3rd owner, fiberglass spring, 255/50-16's Torq-Thrust II

Dwain,

I just checked my RPM drop when the A/C compressor kicks on and it only fell 60 rpm. My system is stock with freon. I did notice a connector on the power wires to the compressor clutch which nothing was connected to. Maybe come years used the solenoid like Ken mentioned.




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