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12-24-2016, 11:00 PM | #1 | |
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Join Date: Oct 2008
Location: Houston, Texas
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A/C Low/High Pressure? - Replaced Entire System
Hello.
2002 Accord EX V6 The A/C compressor seized up this week (yes, in TX we run the AC in Dec. :-) and given the age of the car I decided to replace everything...compressor, condenser, all lines/hoses (even all the metal ones), evaporator, expansion valve, etc. It is blowing cold air once again but just not like I would expect it to for an all brand new system. The Low side seems too low to me and the High seems too high. Below are the conditions, pressure, and temperature readings... Warm Idle AC fan/blower speed on High Recirculator On Ambient temp. inside car 77F Air temp blowing out of vents 55F Low Side 33-34psi High Side 275-300psi Condenser Inlet 150F Condenser Outlet 100F The Low and High side pressures are actually similar to how the original/old system performed earlier this year. I know it is blowing ~20 degrees below ambient in the car but I figured with all new components it would be closer to 30 degrees. Any thoughts on the Low and High side pressure?...seems a little off when compared to R134a pressure/temp charts. Thanks.
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1995 Lumina LS Sedan 3.1L - 215K mi - Daily Driver 2002 Accord EX Sedan V-6 - 209K mi - Wife's Daily Driver 2000 Silverado LS RCSB 5.3L - 168K mi |
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12-26-2016, 09:44 PM | #2 | |
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Re: A/C Low/High Pressure? - Replaced Entire System
I figured it out.
2 things... System was slightly overcharged and do Not go by the standard R134a temp/pressure tables seen online or on the bottles. See this thread if performing AC repair/replacement... http://honda-tech.com/forums/tech-mi...oesnt-2900177/ ...and take note of the exact temp and humidity when running the performance test.
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1995 Lumina LS Sedan 3.1L - 215K mi - Daily Driver 2002 Accord EX Sedan V-6 - 209K mi - Wife's Daily Driver 2000 Silverado LS RCSB 5.3L - 168K mi |
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12-27-2016, 11:03 AM | #3 | ||
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Re: A/C Low/High Pressure? - Replaced Entire System
Thanks for posting!
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