a/c hissing noise from under dash
Hi, I have a 2002 dodge grand caravan 3.8lt v6 with rear a/c. I have had a hissing noise from under the dash for a couple of years now. I replaced the evaporater/drier and expansion valve acouple of years ago because the evaporator started to leak. But, I had that noise before I replaced everything. My a/c is still charged and does cool, but I still have that hissing noise on and off and only when the a/c is on. Any body know what is causing it and how to fix it?
Thanks.
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