2000 lesabre ac? help..what outside temp

[cvcman]

Should my cars ac come on at 40 degs?

[Archon]

It's close.

The PCM enables the A/C compressor clutch whenever the engine is running and the A/C has been requested, unless one or more of the following conditions are present:

The throttle angle is more than 96 percent .
The A/C head pressure is more than 440 psi (4.6 volts) or less than 35 psi (0.4 volt) as determined by the A/C refrigerant pressure sensor.
The ignition voltage is less than 10.5 volts .
The engine speed is more than 4400 RPM for any amount of time.
The engine speed is more than 3700 RPM for more than 5 seconds .
The ECT is more than 124°C (255°F) .
The IAT is less than 5°C (41°F) .

Any of the conditions described above will inhibit A/C compressor relay operation.

[nos4blood70]

41 degrees and above and the auto climate system (if you have it) will command the AC to come on to help with removing humidity from the cabin. Operation below that temp risks freezing up the evaporator.

[cvcman]

yea well it went to 60 and didn't come on...so I guess like last year I need to recharge...last spring I added 2 cans of r134 and a can of dye,,,never could find the leak,,,
The car is just my winter rat now so I may just recharge for warm winter days,,,