TexasRebel
Gearshifter
- Joined
- Mar 19, 2016
- Threads
- 27
- Messages
- 2,500
- Reaction score
- 835
- Location
- between the mustard and the mayo
- Vehicle(s)
- 2016 YZ GTPP - PP2
- Thread starter
- #1
Back in 2017 I had the dreaded failed evaporator.
Now on hot days my A/C will intermitentely blow warm (not hot) air and my compressor seems to be short-cycling. For the most part the system does blow cold, but not as cold as I believe it should.
What I find interesting is that my low-side pressure seems to be rising with the high-side when the compressor is on. (The following graph was built using OBDII data.) I have a set of R134a gauges, but the low side doesn't even seem to move on those. I was expecting the low-side to drop and the high-side to rise when the compressor kicks on.
This doesn't seem like a typical low-on-refrigerant issue.
Does the drop in PSI after the initial compressor-on indicate a weak compressor?
Is my expansion valve shot?
Now on hot days my A/C will intermitentely blow warm (not hot) air and my compressor seems to be short-cycling. For the most part the system does blow cold, but not as cold as I believe it should.
What I find interesting is that my low-side pressure seems to be rising with the high-side when the compressor is on. (The following graph was built using OBDII data.) I have a set of R134a gauges, but the low side doesn't even seem to move on those. I was expecting the low-side to drop and the high-side to rise when the compressor kicks on.
This doesn't seem like a typical low-on-refrigerant issue.
Does the drop in PSI after the initial compressor-on indicate a weak compressor?
Is my expansion valve shot?
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