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hi Lo pressures - low ambient temp

hogtrader on Sat April 04, 2009 9:51 PM User is offline

Year: 2000
Make: Honda
Model: Accord
Engine Size: V6
Refrigerant Type: 134a
Ambient Temp: 47
Pressure Low: 20
Pressure High: 120
Country of Origin: United States

I just replaced the condenser and drier in this car due to a front end collision. The system was not open or exposed, just discharged from a condenser leak. It held a good vac at 29+

It's still cold back here and I was wondering if the pressures (20/120) were normal for the ambient temp. (47) The compressor cycles on and off in what seems normal for this weather. I also noticed that during charging on the low side, it took some time for the compressor to engage, and at one point the low side went to 0 and then started to rise to about 20-25, drop to 10 and the clutch would cycle. The can of 134 got pretty cold when the pressure dropped. I've never experienced this before. The drier I got from AC Kits has a sight glass in it and I did notice a few bubbles in the flow. (easy to spot with the pag 46 w/dye) I also added 1 oz. oil to the condenser and 1/2 oz. to the new drier. Hope it was not too much.

If anyone has any input please reply.

TRB on Sat April 04, 2009 9:59 PM User is offlineView users profile

Compressor Type Nippondenso 10-Cyl.

Refrigerant (R-134a) Capacity (2) 21-23 ozs.

Calsonic Condenser
Low Side 28 psi (2.0 kg/cm2 )
High Side 280 psi (20 kg/cm2 )

Showa Condenser
Low Side 28 psi (2.0 kg/cm2 )
High Side 271 psi (19 kg/cm2 )


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Contact: ACKits.com

hogtrader on Sat April 04, 2009 10:03 PM User is offline

Hi Tim;
Those would be normal in summer temps, but would the pressures be significantly less in 45 degree weather? I can't remember last time I tried charging a system in this kind of weather.

TRB on Sat April 04, 2009 10:09 PM User is offlineView users profile

Charge to weight, do not worry about ambient and pressures. This system is designed for R134a and needs X amount. If you have a high pressure issue it is related to something else besides refrigerant level.

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

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

hogtrader on Sun April 05, 2009 12:03 AM User is offline

Thanks. That is what I need to know. I weighed the charge about 22 ozs.

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