Having problems with your 1990 Buick Regal ?
Location of low pressure air conditioning port?
\015 Hello, \015\012I have not been able to identify the location of the low pressure air conditioning port and also what freon type was used on a stock 1990 Buick Regal?\015\012Thankyou\015\012Greg\015
Follow the biggest a/c line from start to finish.Usually the a/c port is located near the firewall.I have seen the port located under the passenger wheel well.There should be a decal that states the type freon on or near the fan shroud,core support or on the under side of the hood.It is most likely to be type r-12.You can purchase an r-134a conversion kit. If you are not a/c certified to use r-12,you do not need certification for r-134a.
Repair Help & Product Troubleshooting for 1990 Buick Regal
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