Thread: A/C Not Working

Originally Posted by scarry

Generally, thats only a very rare issue,caused by acid and contaminants in the system,which wouldn't be common in an auto system.

Particularly if it has never been worked on,and also sealed since new.

If so, it needs a very good clean up or the new evaporater will not last long.

Generally evaporators leak due to corrosion on the external surfaces,common issue,leaking from an internal issue is very rare..

Well there you go! Thanks for adding and clarifying that Scarry as I was convinced it was the additives in gas and comp oil. I guess either way I reckon I got out of it fairly lightly!
Interestingly, I had to replace my D2 evap about 5 years ago and I wish I'd taken some pics as the dye made the evap look like swiss cheese lol.
At less than $1000 I am just chuffed I can roll the windows back up!

Cheers
Ralph

Originally Posted by Ralph1Malph

Well there you go! Thanks for adding and clarifying that Scarry as I was convinced it was the additives in gas and comp oil. I guess either way I reckon I got out of it fairly lightly!
Interestingly, I had to replace my D2 evap about 5 years ago and I wish I'd taken some pics as the dye made the evap look like swiss cheese lol.
At less than $1000 I am just chuffed I can roll the windows back up!

Cheers
Ralph

Yes,in commercial refrigeration we see the swiss cheese effect all day.Around 99.9% are copper,where auto are generally aluminium.
The copper is as thin as a piece of paper.Its not only corrosion,mainly from food acid,but it also comes from the glue on the boxes in bottle shop cold rooms,and other things.Split tubes,leaking joints, are also an issue.
We generally replace two to three evaporator coils each week.
We try to use evaporators that have a corrosion protection coating,where we can.

Thats out of around 650 cold /freezer rooms we service,and about 300 refrigerated cabinets,at least.

Everything is just built cheap,30yrs ago,we wouldn't have changed more than 10 evaporators a year.
The evaps today weigh less than half what they did 30yrs ago.

All this cheap garbage just increases the release of refrigerants into the atmosphere.
But thats another story.