LT4 A\C problem
 

Here's hoping JMJunkie is checking the site, you seem to know all things Corvette. :thumbsup:

Had the first serious buyer look at 96 LT4 today and much to my surprise the A/C wasn't working. It was working fine the last time I used it but I almost always have the top down so it hasn't really been on for about 4 months.

The pressure plate just keeps popping in and out of the rotor every five seconds or so and the compressor never comes on.

Do you think I have a major problem here or is it something minor. Saw a post Junkie had on another site about shims but not sure it was the same problem.

Thanks in advance for any insight.

No,I believe your just a little low on refrigerant!!:thumbsup:Not uncommon for a AC system to loose a little if it's not been at least used a little once in a while!!:thumbsup::thumbsup::thumbsup:
Nows heres the kicker,a 134a system needs to have within 1 oz of the correct charge the operate properly!!(2 oz window!) Over 1 oz under charged or 1 oz overcharged the system won't work properly!! So you really need to put a set of gauges on it so you can see the readings and know what they mean!!:thumbsup: Chances are your only 3-6 oz Low,But it's hard to measure without a charging station or at least a set of gauges!!The Low pressure switch is probly just kicking it on and back off!!:thumbsup:
Hope this helps,if you like you can call me Toll Free,the number is on the front page of my web site!!:thumbsup:

Thanks Junk:yesnod:

That's a big relief, I'll just run down to my friend and mechanic for 30 years in the morning. He has all the proper equipment.

You da man !!