Automotive Air Conditioning Information Forum

Thanks again!

Just wanted to update and thank all you guys!

We have been driving the Corvette the last 2 summers. AC has been working great thanks!

My son and I were able to find the leak in my son in laws GMC Yukon AC. Bad Schrader valve on low side! My son and I tracked it down in an hour and had him back on ...

You are not the first one to tell me I’m overthinking it!

Ok. I’ll leave it alone.

But what makes you pull the trigger to replace it? How bad of a leak at the valve would make you replace it?

Thanks again…. My son and I have learned a lot from you guys!!

Ok,

The low pressure Schrader was tight. So I loosened a quarter turn and tightened. Replaced cap and came back 30 minutes later. There is still a wisp of refrigerant when I remove the cap.

I can’t believe it because I pressure tested the system with nitrogen at 70 psi for over 24 hours with the ...

Again, thanks so much for the help. It looks like there is Mastercool that will do 134a and 1234yf on Amazon. The one for the 134a only is $68. The one that does both is $160! I think that it might be handy to have. My son and I have been doing this as a learning experience.

I will try to tighten ...

This probably a dumb question. There is a gasket on the low side port cap and it does appear to have PAG oil on it. Are you saying it is normal for there to be a slight leak with the valve and the cap is really what seals the system? Sorry I’m so dense.

And if there is a slow leak on the low side ...

I checked the static pressures and compared the gauges temperature readings. The pressure was equal on both high and low sides and was correct with the ambient temperature.

I noticed on my cheap gauges the 0 is a range on both high and low sides of about 5 on the low gauge and 10 to 15 estimated ...

Thank you for the reply.

This year model has 2 small fans. I think they are each 12 inches. The both turn on medium when the AC is on. I believe them to be original so they are probably tired.

I went for a drive yesterday ambient was 82 and center vent was 41 degrees Fahrenheit. The low pressure ...

:D We finally completed everything today. Installed all the new components. Nitrogen tested the system for 2 days no leaks. Pulled the micron gauge down to 670.

Put in the 32 oz of Freon 134. Ambient temp 80 degrees humidity 61%. With full cold, blower on high, doors open and engine at 1500 RPM ...

:D We finally completed everything today. Installed all the new components. Nitrogen tested the system for 2 days no leaks. Pulled the micron gauge down to 670.

Put in the 32 oz of Freon 134. Ambient temp 80 degrees humidity 61%. With full cold, blower on high, doors open and engine at 1500 RPM ...