iniviate
New member
- Joined
- May 22, 2020
- Member Number
- 1183
- Messages
- 3
Working on wrapping up the A/C in my 69 C10.
It's all vintage air stuff except for the compressor. It's a brand new factory compressor for an LS motor.
8oz of PAG oil. Vintage air says their compressor comes with new oil already installed, so they don't list a capacity. I went with what the compressor came from, a silverado.
Vintage air says 1.8lbs of freon. It took that very slowly, but eventually got it all in.
Truck blows cold air. 28-30 degrees at the vents.
High side pressure is 175psi. Low side is 10psi with the low pressure switched jumpered out. (when i was charging it) with the low pressure switch in the mix, It cycles the compressor about 12 seconds off and 19 seconds on.
That low side seems way too low. I typically charge the low side to around 30-40psi. But, it gave me a weight so i charged to that... and typically that's spot on.
Should i keep charging it?
TLDR - what's the lowest the low side pressure can be?
It's all vintage air stuff except for the compressor. It's a brand new factory compressor for an LS motor.
8oz of PAG oil. Vintage air says their compressor comes with new oil already installed, so they don't list a capacity. I went with what the compressor came from, a silverado.
Vintage air says 1.8lbs of freon. It took that very slowly, but eventually got it all in.
Truck blows cold air. 28-30 degrees at the vents.
High side pressure is 175psi. Low side is 10psi with the low pressure switched jumpered out. (when i was charging it) with the low pressure switch in the mix, It cycles the compressor about 12 seconds off and 19 seconds on.
That low side seems way too low. I typically charge the low side to around 30-40psi. But, it gave me a weight so i charged to that... and typically that's spot on.
Should i keep charging it?
TLDR - what's the lowest the low side pressure can be?