Is there an easy way to check the A/C evap core for leaks?

Trying to find the leak in my A/C system. I have put 2 cans of R134a with UV leak detector in. I have not found any signifigant amount of dye anywhere yet with the black light. Is there any way beside pulling the entire dash to get to the A/C evap to check for leaks?

Also, when i shut down the car it sounded like the expansion valve or something in that area was sucking in air. is that normal? I know there is a lot of vacuum lines on this thing, and i honestly don't know what they all do yet. thanks.

'95 cherokee with 4.0 and auto.

You need to use a sniffer. Not something available at your local parts store. Check with a local AC shop.

Wipe a qtip around the inside of drain hose on the firewall, it will show up there with a UV light, if you ac is still working once the condensation starts flowing it will also show up on the top of the frame where that hose drips on.

RichP said:

Wipe a qtip around the inside of drain hose on the firewall, it will show up there with a UV light, if you ac is still working once the condensation starts flowing it will also show up on the top of the frame where that hose drips on.

Click to expand...

good info. thanks!

Saudade said:

Check with a local AC shop.

Click to expand...

ehh...yeah. i already had one A/C shop check for leaks, vacuum and refill it. one month later i have no A/C and they wanted to start throwing parts at it.

i don't trust mechanics.....