Automotive Air Conditioning Information Forum

Easy options:
1. Turn OFF the HVAC button before starting the engine.

2. Unplug the harness to the compressor

3. Remove the fuse for the compressor

It's OK to just let the compressor's pulley freewheel. If somehow your pulley is locked up to the compressor drive plate, you'd have to remove the ...

Cusser wrote: Sat Mar 28, 2026 6:47 am

5. Sometimes I get an error message when trying to submit a reply, so I do a Preview first, then click Submit. I don't know why, and it doesn't bother me. Laptop, Windows 10.

Just submit a second time. I get the error as well and have never figured out why.

No one is suggesting removing the Schrader valves and using only a cap to seal the system.

Oil these days really depends on the compressor manufacturer. So many people selling different brands that fit vehicles claim they are OEM "Replacements", especially your eBay/Amazon shoppers. Some overseas compressors use PAG46 even though the OEM was something else. That's why you should verify ...

That's a 3-pass PF evap; there are other types. In this case, the refrigerant flows in sections, as shown in the green flow pattern. You can see each section from the weld marks close to the fitting connection. See your 3rd image.

There you go, happy Thanksgiving.

Santech makes very good O-rings in general. IMO, HNBR is HNBR. If kept closed in a bag or plastic case, out of sunlight. Should be good. Are they flexible?

Not fun for me either. Customers want me to spend an hour searching for a .20 cent o-ring. Then they go and Google shop. It's like your time and effort are worth nothing.

The ones we have are the same as the ones you have.

Running off to PT. But just got off the phone with NV, and they are checking.