How do I go about fixing this leak at the A/C condenser?

I just received the o ring kit made for a 2015 tacoma, there are a few o rings in there that have a combination metal and rubber configuration. I don’t know where those go yet but if they go at the inlet and outlet of the condenser, that could be the source of your leak, especially if you used a standard green o ring.

There actually called seal washers.

 

Here’s what I bought from rock auto

tyc condenser. Perfect fit

 

two of them are for the ac compressor and two are for the condenser. I just removed the stock ones, matched them up, used some PAG oil and installed them. Should be a tight fit when sliding them on the hose.

 

Will do, hopefully it goes ok today.

 

My aftermarket o-ring /seal kit has two green (HNBR) and one black (either rubber or buna) washer of the same size which matches the size of the old seal. Supposedly the green HNBR is better. The original Toyota seal washer was black and the rubber material was embedded onto the sealing surfaces of the condenser and hose when I removed the connector. Looking at pictures I found online, the new OEM Toyota is still black rubber but it looks thicker than my aftermarket ones.

 

Awesome. If the system is still leaking with a new hose I’ll order a new condenser from Rock Auto. It’s terrible how O Reilly and Autozone charge twice the price as Rock Auto.

 

So with the new discharge hose it’s a success. The washer seals that came with the hose are much more robust like OEM. I know CurtB said the vacuum leak down test is no good but it held 30 in hg for 1 hour and not even a slight drop. I have pulled a vacuum for 1 hour already and will continue another hour and then fill the system.

Some oil did leak out if the compressor when I removed the discharge hose. I added 10 mL of PAG 46 oil thru the low side port.

 

Should work good

 

It’s all charged up and working again perfectly again. It can hit 40 degrees checking with a vent thermometer.

I added exactly 22oz of refrigerant using a kitchen scale since I know it was completely empty.

I should have just replaced the discharge hose in the first place to prevent all of this grief.

 

You did good grasshopper! Stay cool!

 

Thanks!

On the freeway today with air blowing on the condenser, the air temp on the vent is 38°F. It's like the coldest it's ever been.

Last year when I recharged without fixing the leak or vacuuming the system the coldest was 44°F. The other problem was I didn't know exactly how much refrigerant was in the system and I was charging using my best judgement using the H/L pressures on the manifold gauge.

 

All last week the temps were 38°F to 42°F depending on when the compressor cycles on and if I'm on the freeway getting air flow to the condenser.

However starting yesterday the temps were cycling between the 44°F to 46°F. Should I do some more trouble shooting or just let it go? I have a tiny feeling the condenser may have a leak. On the top right (driver's side) corner I see some dark grime while rest of the condenser looks clean. But I can't be 100% sure because it's pretty close to where connector from the high pressure discharge originally leaked so it might be overspray from before.

 

Clean off that dark spot with some starting fluid so all the stain is gone. Check back in a couple days to see if the stain returns.

I like to use starting fluid as a quick degreaser. The spray makes the job quick and easy.

 

The 134a in my system already has dye in it because it's neon green. I was thinking of getting a UV light and glasses to check.

I was thinking of cleaning it with brake cleaner and then check it with a UV light.

 

Make sure you don't get any brake cleaner on your paint. When it's clean, pour some water with soap over it and watch for bubbles. If it's a very small leak, the bubbles will be hard to see. If that doesn't work, UV lights work... sometimes. Personally I have not had much luck with them.

 

I've had great luck with the light and dye.