Question about 1997 Buick Riviera

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1997 BUICK RIVIERA. Where is the low pressure port located? I cant tell which is which. Both ports are on the same line on the left side of the engine closer to the windshield. One port's opening is larger than the other's and neither cap is labeled. I want to add some R134.

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The larger one is the low pressure ,, if u trace it it leads away from thr compressor back into the car,,

Posted on May 30, 2010

  • thomas langer May 30, 2010

    i see it, thanks. both ports are on the same line, but i do see the larger one. im going to recharge my R134 tomorrow, and advice? i dont think theres a leak, the car just needs a little shot of the cold stuff. figure ill buy one of those kits with the pressure gauge at the local auto parts store....

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