I have a leak somewhere in the A/C system. I put some dye through the system but couldn't see a leak anywhere. A fully charged system lasts about a month before I need to completely recharge it. What would be the best way to track down the leak?

Thanks in advance,
Tracey

 

What dye are you using? is it a UV light one? otherwise it can be difficult to track leaks

 

If it's in the evaporator (behind the firewall) you wouldn't be able to see it without taking it apart. Apparently this is a point of failure in many A/C systems of the 70 series. Not a fun one to fix either.

 

You will need to remove the passenger side lower dash panel and glove box.
Then the Metal knee bolster.
Next remove the black blower motor resistor. Then you can see the evap.

 

I'll give it a shot in a couple of weeks. Will take pics of the procedure. Thanks for the aadvice!

Tracey