Corvette Forum  
Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
New! Use your Facebook, Google, AIM & Yahoo accounts to securely log into this site, click logo to login  
Register Vendors Buy a Vette Search Today's Posts Mark Forums Read FAQ Photo AlbumsGarage

C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette Sponsored by
VBP

Corvette Store
 
 
C6 Parts & Accessories
C5 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
 
Reply
 
Thread Tools Search this Thread
Old 07-03-2003, 12:46 PM   #1
conway62
CF Senior Member
 
conway62's Avatar
 
Member Since: Sep 2002
Location: Billerica ma
Default A/C question

I got the Air Conditioning working on my 71 but it dies when I place it in the Max AC position. All other positions work fine. Any ideas that could cause the AC Max position not to work?

Thanks in advance :banghead:
conway62 is offline   Reply With Quote
Old 07-03-2003, 12:53 PM   #2
Sun King
CF Senior Member
 
Sun King's Avatar
 
Member Since: May 2003
Location: The great state of Massholia
Default Re: A/C question (conway62)

What "dies"?
Sun King is offline   Reply With Quote
Old 07-03-2003, 02:43 PM   #3
Rockn-Roll
CF Senior Member
 
Rockn-Roll's Avatar
 
Member Since: Dec 2000
Location: Carmichael CA
Default Re: A/C question (conway62)

If the compressor or the blower stops working then it's the electrical switch. If you just stop getting cool air out of the vents then it's the vacuum switch.
Rockn-Roll is offline   Reply With Quote
Old 07-03-2003, 02:47 PM   #4
dogboy
CF Senior Member
 
dogboy's Avatar
 
Member Since: May 2000
Location: Orlando,Fl,USA
Default Re: A/C question (Rockn-Roll)

Check the vacum lines that feed into the firewall behind the distributor. They are prone to leaks. and than check them going to the actuators. I'm assuming that you are not getting air through the main vents but the system is working.
dogboy is offline   Reply With Quote
Old 07-03-2003, 10:03 PM   #5
Smokehouse69
CF Senior Member
Cruise-In VI Veteran
Cruise-In VII Veteran
 
Smokehouse69's Avatar
 
Member Since: Aug 2000
Location: Semper ubi, sub ubi
Default Re: A/C question (conway62)

There is a high blower fuse, it is a 30amp inline fuse. It is located under the hood on top of the drivers-side fender well, near the horn relay. It is supposed only to supply power to the motor when the switch is on high.
It is very common for that fuse to blow.
Good luck!
Smokehouse69 is offline   Reply With Quote
Old 07-04-2003, 08:16 AM   #6
conway62
CF Senior Member
 
conway62's Avatar
 
Member Since: Sep 2002
Location: Billerica ma
Default Re: A/C question (Sun King)

The compressor dies when turned to the max position. Is there a seperate switch for the Max position?
conway62 is offline   Reply With Quote
Old 07-04-2003, 08:42 AM   #7
Larry B.
CF Senior Member
 
Larry B.'s Avatar
 
Member Since: Sep 2000
Location: Orlando Floriduh
Default Re: A/C question (conway62)

If the Compressor and blower stop in Max then the switch in the control panel is out of adjustment... If just the blower stops in max or high speed.(which may be what's happening) there is an in line fuse in the red wire that runs along the driver's inner fender to the horn relay. If that is good the check the high speed blower relay on the evaporator housing.
Larry B. is offline   Reply With Quote
Old 07-04-2003, 10:13 AM   #8
mrvette
CF Senior Member
1972 Chevrolet Corvette
 
mrvette's Avatar
 
Member Since: Jul 1999
Location: Orange Park Florida
Default Re: A/C question (bluevetteman)

Bluevetteman there nailed it , the fuse holder should be clean and intact too, that white thing next to the horn relay which doubles as the main power distribution point

also, that hi speed blower relay on the a/c is right next to the exhaust manifolds and mine got baked pretty well, you know....off the road, in the garage, hood down glowing cast iron heavy as hell cooks everything in site with NO air movement....well those wires and plug and the relay were moved to a spot on top of the evap housing....be super careful how you do this though place two very SHORT screws well located so as not hit the evaporator and destroy it....;-)))

GENE
mrvette is offline   Reply With Quote
Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Reload this Page A/C question
Reply


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Aftermarket A/C question Subfixer C1 & C2 Corvettes 43 06-15-2005 05:50 PM
A/C question. What freon to use. Veet 66 C1 & C2 Corvettes 16 05-26-2005 03:21 PM
A/C Question 67vetteal C1 & C2 Corvettes 17 09-01-2004 04:49 PM
Simple A/C question..... calee4nyaboy C5 Tech 12 07-24-2004 06:47 PM
A/C Question Koz C3 Tech/Performance 15 04-14-2003 05:14 PM
C4 Mechanics A/C Question Inside.................................................... 69shark C4 Tech/Performance 15 06-13-2002 03:54 PM
A/C question lou C3 Tech/Performance 15 04-23-2002 02:54 PM


All times are GMT -4. The time now is 10:19 PM.

Advertise Here - Contact Us - Corvette Enthusiast Discussion Forum - Archive - Top

Powered by vBulletin

Search Engine Friendly URLs by vBSEO 3.3.2