How to charge a 90 c4 AC ?
Thread Starter
Racer
Joined: Feb 1999
Posts: 274
Likes: 0
From: summerfield ( Villages ) FL.
How to charge a 90 c4 AC ?
We are in the process of putting our 1990 corvette back on the road , the AC has a very slow leak and in the past I have had to add a can of R134 about every 2 years , I can't remember what I used to do ,to set it up so it would load , removed a fuse I think ?
Can someone help jog my memory ?
Can someone help jog my memory ?
Instructor
Joined: Aug 2002
Posts: 198
Likes: 0
From: Yucaipa CA
We are in the process of putting our 1990 corvette back on the road , the AC has a very slow leak and in the past I have had to add a can of R134 about every 2 years , I can't remember what I used to do ,to set it up so it would load , removed a fuse I think ?
Can someone help jog my memory ?
Can someone help jog my memory ?
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
If you have a leak, it needs to be fixed.
Find a reputable shop that has an experienced A/C technician. The tech will charge the system and add a dye so that the leak will show up under ultraviolet light. Once the leak is fixed, then the system can be properly charged.
Find a reputable shop that has an experienced A/C technician. The tech will charge the system and add a dye so that the leak will show up under ultraviolet light. Once the leak is fixed, then the system can be properly charged.
Thread Starter
Racer
Joined: Feb 1999
Posts: 274
Likes: 0
From: summerfield ( Villages ) FL.
Yup the old mind remembered , so we added 1/2 a can and it is working like it should , I would think there is a definite leak but it has been sitting for over 5 years and a 1/2 a can compared to paying a AC rip of artist hundreds of dollars to fix such a simple system is not my thing , most A/C Guy's here in FL. Think they are Doctor's or charge like they are!
I will continue to add a can when needed , most likely the leak is the seal behind the clutch , not a bad fix but best to replace the clutch when doing it , I have done a few , but I am old school and if it is not broken don't fix it !
Anyway thank you for the very quick response, I have changed all the fluids , just need to detail the car , a bit dusty after sitting so long !
I will continue to add a can when needed , most likely the leak is the seal behind the clutch , not a bad fix but best to replace the clutch when doing it , I have done a few , but I am old school and if it is not broken don't fix it !
Anyway thank you for the very quick response, I have changed all the fluids , just need to detail the car , a bit dusty after sitting so long !
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
If it's a shaft seal, look for oil on the hood above the compressor - some have reported that it leeches through and ruins the paint, so clean it off with some Simple Green. Kits to fix it are about $50. You'll need to discharge, remove the compressor and then R&R the clutch and snout.
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
If it's a shaft seal, look for oil on the hood above the compressor - some have reported that it leeches through and ruins the paint, so clean it off with some Simple Green. Kits to fix it are about $50. You'll need to discharge, remove the compressor and then R&R the clutch and snout.
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Slingshot
Joined: Dec 2001
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Likes: 24
From: Charlotte NC
