Air conditioner not working?

SEBASTIAN_PERSONAL

MEMBER
2010 FORD FOCUS
3.0L
3 CYL
2WD
AUTOMATIC
100,000 MILES

First and foremost thank you for your help, but unfortunately I'm having a bit problem figuring out why my AC stay cold only for few days from the last recharge. I use a vacuum to empty everything and use a dye using the low port but found no signs of leaks using my UV light. Few days ago I recharge the AC with 2 12oz cans of the Freon using the low port. It work for a while but today the air blow warm air and no feelings of coldness or changing of the air when I turn on to AC. This leads me to try the dye today to see if there is any leaks. As I mentioned above, there is no signs of leaks using my UV light. Please help and thanks.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

You definitely have a leak which is the easy part, the hard part is finding it. However, if you have not installed dye when recharging the system that is where we need to start.

Next we need to follow this guide on how to pull it into a vacuum and see if it holds it. I suspect it will not.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Lastly, we need to remove the blower motor and look in the housing to see if the evaporator is leaking. Clearly this will not be in the engine bay and we will not see it unless we look in the housing.

Here is a guide on how to remove the blower to inspect the evap:

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Let us know if you have questions. Thanks

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