Automotive Air Conditioning Information Forum (Archives)

psawall on Wed August 04, 2010 1:53 PM

Year: 2000
Make: Honda
Model: Civic
Engine Size: 1.6L
Refrigerant Type: 134a
Ambient Temp: 95
Pressure Low: 42
Pressure High: 250
Country of Origin: United States

Okay, I'm charging my 00 Civic and this chart taken from the service manual makes complete sense to me. However, after searching through other posts here in the forum I'm becoming a little concerned about potentially overcharging my system. Other 96-00 Civic posts with people claiming to have 95 ambient air temp are worried about an over charged system with 250 on the high side, but if I go by the chart I should be in the upper 300s at 30% humidity. Last night when I was charging it was about 20% humidty, but I guestimate that should still put me in the mid 300s for high side. Can someone confirm this?

I only got the system up to about 250 on the high side before I ran out of refrigerant (used the first 3/4 of the can on another car), but do I worry about going higher? Also, these measurements were done at idle. Should I be at 1500 RPM when I take the measurements? Thanks much!

TRB on Wed August 04, 2010 8:41 PM

Charge by weight.


Application Specification
Compressor Type Nippondenso Or Sanden

Compressor Oil Capacity (2)
Nippondenso 4.7-5.2 ozs.
Sanden 4.3-5.0 ozs.
Refrigerant (R-134a) Capacity 21.1-22.9 ozs.

(2) Use SP-10 Oil (Part No. 38899-P13-A01) on Sanden compressor. Use ND-OIL8 (part no. 38899-PR7-003) for Nippondenso compressor.



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psawall on Wed August 04, 2010 11:56 PM

Yes, that would be ideal, but that would require taking the car in to a shop to evac the system and starting from scratch, right? Or is there another way to determine how much refrigerant is in the system? I was only charging up a weak system here. I'm not sure when the last time the AC was worked on, I've only had the car for about 4 years.

Thanks!

TRB on Thu August 05, 2010 12:50 AM

Only way to know if the system is working correctly or if it has a problem is knowing you have the correct refrigerant level.

You might find that your local Auto Zone will rent a vacuum pump. Some community colleges that have an auto shop course will evacuate and charge for a fair rate. Usually just for the cost of refrigerant.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com