Search found 1225 matches
- Sat Apr 20, 2024 1:34 pm
- Forum: Automotive Air Conditioning Forum
- Topic: Leave well enough alone or charge AC system? Older Hondas
- Replies: 8
- Views: 106
Re: Leave well enough alone or charge AC system? Older Hondas
I should also have mentioned the cabin air filter has been maintained. Excellent. I found the following on the internet, regarding a "rough test of the AC system would be to turn the fan on low, set the temp at minimum, set the vent to fresh air, run the engine rpm at around 2500. Measure the ...
- Sat Apr 20, 2024 12:10 pm
- Forum: Automotive Air Conditioning Forum
- Topic: Leave well enough alone or charge AC system? Older Hondas
- Replies: 8
- Views: 106
Re: Leave well enough alone or charge AC system? Older Hondas
Generally, seasonal refrigerant losses will occur over time, usually from seepage through the compressor-shaft seal. My main concern is operating an MVAC system with a lower-than-optimal refrigerant charge, which will cause the compressor to run with less oil, risking internal damage or even complet...
- Sat Apr 20, 2024 11:14 am
- Forum: Automotive Air Conditioning Forum
- Topic: 12a chart
- Replies: 6
- Views: 75
Re: 12a chart
On this Forum, we don't advocate the use of non-EPA-approved refrigerants. See "Forum rules," Item #3. So I'm afraid we can't help you with that question. Please DO post again with any additional questions you might have.
- Sat Apr 20, 2024 8:35 am
- Forum: Automotive Air Conditioning Forum
- Topic: Expansion valve for 1970 Clardy under dash
- Replies: 7
- Views: 102
Re: Expansion valve for 1970 Clardy under dash
I'm curious about the original R-12 spec...I would guess about 3 pounds.Rweaver428 wrote: ↑Sat Apr 20, 2024 7:42 am I will gladly scan the Clardy docs and attach them if it would help someone.
- Sat Apr 20, 2024 8:08 am
- Forum: Automotive Air Conditioning Forum
- Topic: Expansion valve for 1970 Clardy under dash
- Replies: 7
- Views: 102
Re: Expansion valve for 1970 Clardy under dash
From outward appearances, your original TXV looks pretty good. Hopefully, the internal sealed and charged portion is intact as well. The refrigerant doesn't "matter" to a TXV. I believe there is sophisticated equipment that not many people have to verify a TXV's operation. Best option for ...
- Sat Apr 20, 2024 7:03 am
- Forum: Automotive Air Conditioning Forum
- Topic: Expansion valve for 1970 Clardy under dash
- Replies: 7
- Views: 102
Re: Expansion valve for 1970 Clardy under dash
I have the original installation instructions, charging instructions, and parts diagram. That's "gold." Be sure to hang onto it. I would like to replace the original expansion valve with a new one, but I’m not sure which one to get. Unless the original TXV is corroded or otherwise damaged...
- Thu Apr 11, 2024 5:08 pm
- Forum: Automotive Air Conditioning Forum
- Topic: 2007 Mazda Miata A/C Issue
- Replies: 6
- Views: 227
Re: 2007 Mazda Miata A/C Issue
I forgot to mention the specs that I have for your car: 16 ounces net weight of R-134a, and 4.4 fluid ounces of PAG-46 oil. However, if your car still has its under-hood A/C decal, go by those specs instead because the decal takes precedence.
- Thu Apr 11, 2024 11:35 am
- Forum: Automotive Air Conditioning Forum
- Topic: 2007 Mazda Miata A/C Issue
- Replies: 6
- Views: 227
Re: 2007 Mazda Miata A/C Issue
A reading on the low side of 21 PSI at 1,500 RPM translates to an evaporator temperature (coincidently) of about 21°F, which will cause the evaporator to freeze-up and block airflow through the vents under certain conditions. It's also an indication that the system is undercharged. The Schrader valv...
- Thu Apr 11, 2024 10:11 am
- Forum: Automotive Air Conditioning Forum
- Topic: 2007 Mazda Miata A/C Issue
- Replies: 6
- Views: 227
Re: 2007 Mazda Miata A/C Issue
I agree with the preceding comments. It appears to be low on refrigerant. Have the refrigerant recovered, then the system evacuated and recharged to specs, adding back the proper amount and type of oil if any was recovered along with the refrigerant. The ambient temperature is a bit low for MVAC wor...
- Mon Apr 08, 2024 1:39 pm
- Forum: Automotive Air Conditioning Forum
- Topic: 03 Jeep Wrangler 500PSI+ high side pressure
- Replies: 3
- Views: 159
Re: 03 Jeep Wrangler 500PSI+ high side pressure
The system is bumping into the High Pressure Cut-Off (HPCO). A few issues can cause that. Foremost is a blocked Orifice Tube (OT) that can prevent circulation of the refrigerant and oil and cause extremely high pressure to build up on the high side, which you noticed. The OT itself is inexpensive. H...