I'm trying to add refrigerant to my Chevy Astro, but I don't know which one is the low pressure so that I can add it.

here are some images if they help.

http://i33.tinypic.com/2uot9pe.jpg

http://i37.tinypic.com/19w8sl.jpg

http://i35.tinypic.com/348hwud.jpg

This one is the low side port but you really shouldn't be trying this if you don't have detailed knowledge of A/C systems. You have no idea if low refrigerant is even your problem or how much to add. Overfilling the system can do severe damage.



http://i37.tinypic.com/19w8sl.jpg




78 Corvette Pace Car For Sale-18k mi orig-Florida

thanks