Northstar Engines and System Technical Discussion Discussion, A/C Question in Cadillac Engine Technical Discussion; Sorry to be a PITA, but I have a small question about the AC compressor...
I started to put some ...
Sorry to be a PITA, but I have a small question about the AC compressor...
I started to put some R134a in the high side, and the gauge hit 40 then the compressor kicked in and it dropped to 10. The compressor went off, the pressure rose again and the AC kicked in around 13 this time. Even though the gauge hit 40 psi when filing, when the AC came on, it dropped significantly.
Is it safe to add more R134, assuming that this is why the AC wasn't kicking in at all when I got the car, or is the rise and fall of pressure something else?
I have to put my hand up here and say I grew up where cars didn't have AC. They had lots of other gadgets, but no AC.
Automobile(s): White Diamond '03 DHS (with floor shift)
Re: A/C Question
I am sure that you did not add it to the high side. The high side fitting is a different size to prevent you from doing that because the can would become a hand grenade. Rising and falling pressures are normal as the compressor engages and disengages. Those pressures are not. How much is in there now?
Now, the pressure is around pounds when I put a gauge on it...it's just that when I pull the trigger to add the 134 it rises to 40 before the compressor kicks.
When the compressor clutch engages it's 13.
The shop says that the compressor/clutch and receiver/drier need to be replaced $275 parts cost. I checked online and $230 seems to be the lowest I can find the parts for, so doesn't sound too outlandish?