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Type of Shraeder valve for low side, Chrysler minivan

avx on Wed August 29, 2007 5:21 PM User is offline

Year: 1999
Make: Dodge
Model: G. Caravan

What kind of Shraeder valve is used in the low-side port on a 1999 Chrysler minivan?
I believe it's the standard type, the one which looks like
a tire valve, because I don't see a little spring on the external part of the stem.
The valve seems to be leaking, but not much, and it looks like the cap is holding the charge in. Last year,
I found some oil in the service port and wiped it off. Now it's showing again. Should I replace the valve
(with a tool to do it under pressure), or just seal the cap with Nylog or something, and let it be?
Thanks.

Chick on Wed August 29, 2007 5:40 PM User is offlineView users profile

The low side uses a shrader valve, but it's a "large bore" valve I think, so a special valve tool is needed. I'm going to have to try my mastercool valve core removal tool on one at the shop and see if it works while under pressure. Not sure on that one. I haven't needed to use that in ages... .. Just use a new cap and, make sure the rubber washer is in it, and keep it tight..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

avx on Wed August 29, 2007 7:37 PM User is offline

Thank you. I posted here in 2005 shortly after I got this van. It was a little low on refrigerant and
now I think I know where the leak was, because I received it with a missing low-side cap.
If you do have one of these vans at the shop, please let me know what you find. Maybe newer ones
use the same valve too.

Chick on Wed August 29, 2007 9:38 PM User is offlineView users profile

I have one or two 99 models in the yard, I'll try to check in the morning..I have the mastercool valve core remover for systems under pressure, but I don't know if it will work on the newer ones with the "fatter" cores..But i'll find out...

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

avx on Sat September 01, 2007 1:40 PM User is offline

I'll bump this up because I obtained a couple of low-side valve cores from a Dodge dealer,
and they seem to be a regular type, but maybe I can't tell .206" from 0.305". They had to be ordered,
which for me is another confirmation that by and large, dealers do not involve themselves in depth with AC work.
For what it's worth, I believe these are genuine Schrader-Bridgeport units.
Of course, it remains to be seen if they actually fit.
The Mopar part number, just in case, is 5264638.
Thanks again!


Edited: Sat September 01, 2007 at 4:17 PM by avx

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