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What's up with my pressures?

rswatzyna on Thu September 06, 2007 8:39 AM User is offline

Year: 1994
Make: Ford
Model: Taurus
Engine Size: 3.8
Refrigerant Type: R-134
Ambient Temp: 83
Pressure Low: 25
Pressure High: 400
Country of Origin: United Kingdom

Does anyone know where it's located?
Think it may be clogged because of the pressure readings. Has new compressor because the clutch failed. Have also installed a new accumulator. Added oil and tried to charge. Low side was 25 and kicking the compressor off. High side was going over 400 with 30 ozs of R-134. Any help would be greatly appreciated.

ChevyMan on Thu September 06, 2007 8:57 AM User is offline

You opened the system and replaced the compressor. But did you vacuum the air out before you recharged it? Air in the system is called non-condensable gas and will drive the high side pressure up as well as compromise the cooling ability. Are the condenser fans working properly? Are the fins on the condenser and radiator clean?

rswatzyna on Thu September 06, 2007 9:19 AM User is offline

Condenser fan is working. Condenser and radiator are good. Pulled vacuum on system and added 30 ozs R-134. I think the problem is the orifice tube. If it is restricted, wouldn't it cause these pressure problems?

TRB on Thu September 06, 2007 11:05 AM User is offlineView users profile

Inside the liquid line. OT is replaced by replacing the line itself.


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