Having problems with your 1999 Buick Regal ?
Where do i add r134 on the 99 buick regal , I see to nozzles under the hood one to the right boy wheel shock and the other back center closr to firewall
Closer to firewall is where your low side port should be. Your R134 filling hose quick connect adapter will ONLY fit on the proper "low side" connector port at that location because it is a different size than the high pressure port. You can't put it on the wrong port and get it to fit.
The low side should be filled and is always the bigger of the two lines on the system. if the system is too low the clutch won,t kick on so unplug the pressure switch close to an alluminum canister and jump that with a paper clip that should get the pump going. hope this helps!!
Repair Help & Product Troubleshooting for 1999 Buick Regal
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