Automotive Air Conditioning Information Forum

kapilamuni wrote:You are head-on.
Removed one of the shims and cooling back to normal.

Thanks.

Winner, winner: chicken dinner !!!

On some AC clutches, the gap becomes too large and and will not engage; can be reduced by removing a thin shim.

AGrayson84 wrote: I couldn't muster better than 42 or degrees outlet temperature

Agree with Tim - that's good vent temperature.

If my vehicle, just to learn more, (1) I'd pull the belt off the compressor and try turning the compressor with a wrench.

(2) I'd jump the compressor clutch with 12 volt positive wire and see if the AC clutch engaged each time.

I would guess that it might be possible to get oil on an AC clutch ...

da324 wrote:what could have happened for the refrigerant to leak out in the interim?

You got it: a leak !!!

Hi guys...

Was just informed the car passed the vacuum test and there’s no visible refrigerant leak to the naked eye.

I was given two scenarios...either there’s a minor leak that can’t be seen as I said (although I’m unsure how likely that is - hence why I am here)

OR

The mechanic who did the ...

kconatymd wrote: Someone suggested a bullet piercing valve.

I personally would not do a piercing valve onto a good line.

To me, your story sounds like a refrigerant leak from Day One. Your parts might have been replaced when not faulty.

A dirty evaporator (leaves) can be cleaned without dismantling or replacing it.

Good-working AC which gets worse over time typically means refrigerant is lost; a shop can evacuate ...

Dougflas wrote:24 on vacuum is not enough depending upon where you are located. what is your elevation? Better recheck your equipment.

Agree; test the gauge with the valves to the vehicle blocked or shut off, and pull a vacuum then.

You might be able to find some R-12 containing oil charge still available https://www.ebay.com/itm/R12-REFRIGERAN ... SwWXlcgCUy