Automotive Air Conditioning Information Forum

If your pressures are in check. Pop-off should be enough. HPCO switches were popular. Not sure if they are around much these days.

This might work as well.
43-MT4028

Compressor, if Sanden, should have a high-pressure pop valve.

Likely just the system settling. A good electronic leak detector will tell in the long run.

Good news.

I stand behind what I said before. A good cap with a new O-ring & Schrader valve should be all that is needed. If someone wants to spend money on gadgets. Feel free.


43-mt9662

Emailing that no one is helping you feels a little passive-aggressive. The site is free; responders volunteer their time. No one is required to answer your questions. I've spent 20 years paying for this site and answering these posts from Google shoppers. Plus, many will not even read long posts. I ...

Sanden SD7H15 is like saying I had a cup of tea. There are many different variations of that body compressor. 4-digit number tells the story.

JohnHere wrote: Thu Jul 02, 2026 1:20 pm Tim, I've noticed no spam since June 29.

Well, I did make a mistake and was deleting all new sign-ups. I approve them once a day now.

Always a best est when mixing and matching parts. Evap is the only "larger" item from a universal system, which takes about 7 ounces.

7 ounces should be fine.