99 Corvette AC Issue

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Feb 12, 2017 | 11:36 PM

1999CorvetteMilGuy

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99 Corvette AC Issue

Ok I have been neeting my brain trying to figure out what is wrong.

I just replaced the compressor along with every other piece of the AC system as the previous owner pulled most of the pieces for weight..

When I go to look up my set of AC gauges that I have used on plenty of other cars I am not getting any readings from them. I thought maybe the valves were bad on the ports so I changed them out and nothing.

I have been doing research into if there is some set of adapters that you need for a c5? Any help is greatly appreciated.

Thanks

Feb 13, 2017 | 12:04 AM

Rob 02

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From: Atlantic Beach FL.

My harbor freight gauge works fine. Do you have the ***** on top of the quick disconnects tightened? I heard if you tighten them too much you can damage the schrader valves.

Feb 13, 2017 | 01:03 AM

1999CorvetteMilGuy

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Quote:

Originally Posted by Rob 02

My harbor freight gauge works fine. Do you have the ***** on top of the quick disconnects tightened? I heard if you tighten them too much you can damage the schrader valves.

I read that too so no I havnt tightened them too much.. I guess if I cant figure this out Im gonna have to bring it to the shop

Thanks for the info

Feb 13, 2017 | 01:12 AM

Rob 02

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From: Atlantic Beach FL.

Maybe your gauges got broke.

Feb 13, 2017 | 02:24 AM

tblu92

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From: CA.

St. Jude Donor '13-'14-'15

If your car has LT headers the A/C lines often actually touch or are so close to the exhaust tubes that the A/C lines get over heated and the AC will not work--Most always everyone has simply to bend the AC lines away from the exhaust tubes as far as you can and the AC will work normally

Feb 13, 2017 | 11:44 AM

Bill Curlee

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From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

With the HVAC system OFF, the system should equalize and both lines should read approx. the same pressures. USUALLY 50-60 psi.

See if you can read the system static pressures.

BC

Feb 13, 2017 | 04:49 PM

1999CorvetteMilGuy

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Quote:

Originally Posted by Bill Curlee

With the HVAC system OFF, the system should equalize and both lines should read approx. the same pressures. USUALLY 50-60 psi.

See if you can read the system static pressures.

BC

So I think my gauge set is bad.. It seemed like they were blocked off so I decided to just hook one of the lines directly to the vacuum pump and it immediatly made the compressor bog but there was no suction to the line.. Guess I need to go buy another set