I'm not following that. Nothing in the AC system should be 35 pounds or 35 degrees. I don't know what "it" is, but if you're saying the high-side pressure didn't go up to around 150 psi, that would suggest the compressor has failed.
One common cause of a failed compressor is adding too much refrigerant. A home refrigerator will be damaged by adding just two ounces too much refrigerant. Car systems are much more forgiving because they are going to be bouncing around and tipping various ways. Still, too much refrigerant will cause a couple of problems. First, liquid refrigerant boils and turns into a vapor. Where that occurs is where it gets real cold, and you want that to be in the evaporator in the dash. When there's too much in the system, it vaporizes too late when it's on its way out to the compressor. The "cold" is made under the hood instead of inside the car. Second, that liquid can slosh into the compressor, and since liquids can't be compressed, something has to give. If you're lucky, the compressor will just lock up and you'll have a horrendous belt squeal, or the clutch will burn up. If you're not lucky, the pistons in the compressor will be damaged.
The only way to know if the right amount of refrigerant is in the system is to recover all of what is in there now, then pump in the exact measured amount called for.
Wednesday, June 24th, 2015 AT 11:57 PM
