I believe that the Dodge Dynasty's were all R-12 A/C systems. If yours was a 1993 or older model you will need to retrofit your A/C system to the R-134a systems. There are a lot of retrofit kits on the market that makes it easy for individuals to do it themselves. Also you can find a video on the website link below which can show you exactly what is needed to do this.
How do i Recharge AC Unit for a 1998 Dodge Stratus
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The 2002 Dodge Grand Caravan air conditioning recharge valve is located on the air conditioning compressor. The recharge valve will be labeled as such.
Its located on the top of the a/c compressor..................
The low side.
Well, if the unit was originally meant to be recharged with the old freon, a kit is needed to allow recharge with the new.
take it to a dealer.
It's on the accumulator mounted on the firewall, passenger side.
No, all the connections for the same type of refrigerant will be the same no matter the year Vech.
You may need to recharge the cooling chemical in your unit.
in the engine compartment by the firewall with a blue cap, this is low side
Was unit evacuated before recharge after compressor replacement?