JHZR2
Staff member
My wife had been complaining that now that it's getting warmer, her AC hasn't been working well. It's not hot out, but we get in the 70s, so a car parked in the sun can get warm inside.
Put the gauges on tonight with the engine somewhat warm and ambient of 72. Static check was fine, and we knew the car was cooling somewhat when on the highway, just not doing well around town, so there was no concern of a major loss of charge.
At first it was sitting with low at around 35, high at 140. My gut was that the high side was too low, so I added. It got cooler from the vents, and kept getting cooler until the pressure was too high for my liking. I stopped at the point where low was 37, high was 220psi at idle. Temperatures had kept decreasing, which was an important factor to me (fill the accumulator).
At 1500-2000, low side drops to 27, high side goes up to around 240.
To me, that's too high for this ambient condition, but wanted thoughts. The car's fans were running, but my supplemental fans may not have blown enough to help the condensor. And again, the temperature had kept dropping. Vent temps were around 40 when I stopped.
Thoughts?
Put the gauges on tonight with the engine somewhat warm and ambient of 72. Static check was fine, and we knew the car was cooling somewhat when on the highway, just not doing well around town, so there was no concern of a major loss of charge.
At first it was sitting with low at around 35, high at 140. My gut was that the high side was too low, so I added. It got cooler from the vents, and kept getting cooler until the pressure was too high for my liking. I stopped at the point where low was 37, high was 220psi at idle. Temperatures had kept decreasing, which was an important factor to me (fill the accumulator).
At 1500-2000, low side drops to 27, high side goes up to around 240.
To me, that's too high for this ambient condition, but wanted thoughts. The car's fans were running, but my supplemental fans may not have blown enough to help the condensor. And again, the temperature had kept dropping. Vent temps were around 40 when I stopped.
Thoughts?