AC Hi & Low Side Are Both 25 on 2009 TL
 

Hello,

2009 TL is blowing warm air. I took it to Pep Boys and they said the freon was good and they topped it off. They said the compressor was going and would need replaced shortly. Blew cooler for 2 weeks now it's blowing warm again so I hooked up a manifold gauge and it reads 26 Low and 25 High. I can hear the fan and compressor kicking on when i switch AC on/off. What would the diagnostics steps be to identify the issue? Thanks for any help.

~25 on both sides is really low - so low that compressor might not even engage anymore - how the pressure looks when you think that compressor works?

Try to follow the lines and look for "wet" spots - that might indicate where the leak is coming from, as leaking system also leaks oil, and that is what you can see. If they used dye, spots should be green and illumiate under UV lights - check if valves, especially the low side, has some leftover greed residue.

Thanks Peter.