Quote:
Originally Posted by HipToBeSquared
I've never seen an accumulator with two ports on it, the low side will be on the accumulator, I'm guessing either one will work. Are they both the same shape when you take the cap off? What year vehicle? If it is an R134a system the low port will be a smaller diameter than the high side port.
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Vehicle year is 1989 gmc s15 2.5 liter engine automatic
It is not r134a its r12 system and under those 2 caps on accumulator both ports are same size but the third port which is one line (not on accumulator) is smaller than these two...
I have to use adapter kit in order to put r134a in it..