I discovered that the cap on the low pressure port of my 2004 T&C van was missing and wonder if this has caused any problems. Is its purpose merely a dust cap (if so would any tight fitting cap suffice) or does it have other purposes?
Next problem is where to find a replacement without being raped by the dealer. Anyone know where I might locate one?
Frank
I would try a salvage yard. One from another year and/or model would probably fit.
Everytime I have my A/C serviced, I always check for these before leaving the shop. Very few take the time to put them back after the work.
KM
Thanks for the response - will try a salvage yard. Still not sure if the cap serves any other purpose than to keep moisture and dirt out of the port.
Frank
Besides keeping dirt out it should have an o-ring in it and it's a second seal to prevent freon from leaking out if the schreader valve leaks a little. Usually if there is a leak you'll see oil. If you run by an AC repair shop they may have a cap laying around they would give you.
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