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Low side

vega on Sun June 29, 2008 6:21 PM User is offline

Year: 1999
Make: Dodge
Model: Intrepid
Engine Size: 3.2
Refrigerant Type: 134a
Ambient Temp: 65-85
Pressure Low: 30
Country of Origin: United States

Recently installed a rebuilt compressor and new dryer. System was evac and recharged professionally last season. I bought a recharge hose with a built in low side dial pressure guage. At 65 degrees ambient temp, low side is 30 lb and cools to 40 degrees quickly. At 85 degrees ambient temp, low side is still 30 lb, but seems to take 20 minutes to eventually cool to 40 degrees vent temp. Without getting too technical, should I add some 134a or drain some? Why would pressure be the same at diff amb temps? What would be the ideal pressure and at what ambient temp should I recharge?

TRB on Sun June 29, 2008 7:13 PM User is offlineView users profile

How much refrigerant is in the vehicle and did you pull a vacuum before charging? To be as polite as I can. No one would use one of those charging gauges to properly charge a vehicle. They look great and make the company that sells them a lot of money. But they are worthless when it comes to a proper charge level.

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Chick on Sun June 29, 2008 8:48 PM User is offlineView users profile

It would be best to have the refrigerant recovered and the system recharged to factory specs. Then you can properly diagnose the system. One gauge isn't going to work, and make sure the death kit only contains refrigerant, no sealers, O ring lubes, high mileage (whatever that is) or any other "magic' Just R134a, the proper type and amount of oil, and UV dye are all that should go into your car..Hope this helps.

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Email: Chick

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