What year ac type
Thread Starter
Burning Brakes
Joined: Jun 2016
Posts: 761
Likes: 66
From: Fitzwilliam New Hampshire
What year ac type
What year did the GM Corvettes change ac gas from R12 to R134 ?
Mine is a 1994 base coupe.
Mine is a 1994 base coupe.
Last edited by A Peter C4; May 25, 2017 at 09:51 PM.
Advanced
Joined: Mar 2017
Posts: 89
Likes: 3
From: Portland OR
http://www.vettefacts.com/C4/1994.aspx
Looks like you're in luck! First paragraph on this page says that 1994 was the year they switched to R134a.
Looks like you're in luck! First paragraph on this page says that 1994 was the year they switched to R134a.
Melting Slicks
Joined: May 2014
Posts: 2,894
Likes: 592
From: New Port Richey FL
I think it may have been around 88 but one easy way of tell if your car has been converted to or has the 134 system is the 134 has air chuck type of fitting, R-12 has the Threaded connection.
Last edited by s carter; May 25, 2017 at 10:18 PM.
Team Owner
Joined: Dec 2012
Posts: 30,427
Likes: 1,609
From: Outside the Quick Stop N.J.
The fittings are the easiest way to tell, there should be a label under the hood listing the refrigerant type and amount of factory charge.
Last edited by Patsgarage; May 25, 2017 at 10:49 PM.
Race Director
Joined: Oct 2008
Posts: 19,220
Likes: 1,671
From: Long Island
6 years ago I added 134a from Walmart to the 1988 Old's 88 station car. it still works great and no issues. Just put it in in 1988 and drove 5 hours in the summer that year upstate to a friends house, then daily trips..
I've added some each year, and it still works great....
I've added some each year, and it still works great....
Last edited by BLUE1972; Jun 30, 2019 at 08:10 PM.
