A/c
boombie80
06-06-2005, 12:18 AM
I Have A 1995 Crown Vic And The Ac Is Not Working It Has 134 In It But The Compressor Wont Kick On Also The Compressor Is Not Old Either--help I Do Not Know What To Do
way2old
06-06-2005, 07:53 AM
You need to have gauges installed to see if there is still refrigerant in thew system. If there is refrigerant, check the wires at the compressor to be sure they are connected. Also check the A?C relay in the under hood fuse panel.
crowned vic
06-14-2005, 10:48 AM
I Have A 1995 Crown Vic And The Ac Is Not Working It Has 134 In It But The Compressor Wont Kick On Also The Compressor Is Not Old Either--help I Do Not Know What To Do
JUMP THE CLUTCH TO SEE IF THE CLUTCH ENGAGES.
JUMP THE CLUTCH TO SEE IF THE CLUTCH ENGAGES.
Charles Neff
06-14-2005, 08:38 PM
The is a LOW pressure cut-out switch which opens the circuit to not apply voltage to the compressor clutch coil if the system pressure is low (low or empty on freon ) The switch is located just forward of the A/C Accumulator (Big Black Tank Looking Device on Passenger side). A cheap outfit from Walmart has a R134 can fitting on it, a guage, and a connector to connect to the Low side fitting on the side of the Accumulator.
If system is low or empty, you can add freon and this will get enough pressure in the system to cycle the compressor on and off until finally it gets the low side stable at about 50PSI with compressor running.
If low side system pressure is high enough, problem could ce High pressure cut out switch is defective and is always open circuit.
Measure both switches, High and Low for electrical continuity when the engine/compressor is not running. Both switches should be closed (short circuit).
If system is low or empty, you can add freon and this will get enough pressure in the system to cycle the compressor on and off until finally it gets the low side stable at about 50PSI with compressor running.
If low side system pressure is high enough, problem could ce High pressure cut out switch is defective and is always open circuit.
Measure both switches, High and Low for electrical continuity when the engine/compressor is not running. Both switches should be closed (short circuit).
Charles Neff
06-14-2005, 10:28 PM
First, The 50 PSI number I gave you is High. I' not sure where it should be because it's all about temperature... Outside the car, temp inside the car, fan on High or Low, Temp of the radiator, ect... Lots of factors to consider here.
If the system has no pressure it probably should vacuumed real good before adding any refergerant. Also, if it's without pressure there is no doubt a leak and you need to fix this first.
Considering my last two statements, I think you should have someone repair your system or at least have someone assist you that has done this before.
If the system has no pressure it probably should vacuumed real good before adding any refergerant. Also, if it's without pressure there is no doubt a leak and you need to fix this first.
Considering my last two statements, I think you should have someone repair your system or at least have someone assist you that has done this before.
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