Car stalls when I let out the clutch

ok, but does the compressor shaft stall, at each A;/C drop out.
that is 1st. check on all A/C cars.
that is the clutch there, if the clutch drops out
that means the logic , sees ERRORS>
we can work that issue easy but i need the shaft answer.
do not confuse, spinning pulley with shaft.
first makes sure the belt is tight. then see if it drops out.

If your A/C compressor clutch is binding or seized, - the extra load will slow down the engine as everything runs on 1 belt on this car - check your Freon level and refill or replace the clutch/compressor

I mworking on my blazer AC unit now . You have a problem with the compressor clutch or the compresser Its likely the clutch its supposed to cycle about 8 times per minute . So it goes on then off 8 times per munite this is normal . However if the clutch dosen't spin then the belt will drag on the clutch pulley this will stall the engine until the belt wares out but this will damage every part that the belt rides on . The water pump the alternator powersteering pump and belt tenisinor not to mention the belt .It sounds like your clutch is seized try not to run it until you can figure out why the clutch isn't spining

SOUND LIKE ENGINE GETTING TOO HOT.THAT WILL CAUSE LOST OF POWER.CHECK COOLING CLUTCH FAN IF IT HAS RESISTANCE WHEN ENGINE HOT FAN CLUTCH IS GOOD.IF FAN CLUTCH FREE WHEELS WITH NO RESISTANCE WHEN ENGINE HOT.FAN CLUTCH IS BAD.THAT WILL CAUSE ENGINE TO RUN HOT WHILE DRIVING.

Old belt, belt misalignment, belt tension incorrect, failing belt tensioner, or bad condenser or alternator not turning correctly.

this could be a clutch problem, i encountered a similar situation not so long ago,skim over your clutch setup, if the clutch was slightly engaged even with the pedal pressed it would put enough strain on the engine forcing it to stall, alternativly it could be as simple as a disconnected vacuum or breather pipe from the inlet manifold

Well I may need more information, but if something electrical loaded your engine to the point of a stall, i would expect fire soon. So most likely the fan motor is eliminated.

Now the A/C compressor, damaged and refusing to turn may be able to stall an idling engine, with todays cool serpentine belts... (In the olden days a belt would burn through and come off.)

The cheap solution to this condition is to turn off the car, and CAREFULLY unplug the compressor's electrical connection. Securely tie the wires out of the way, and test again...

You may want to consider repairing it, however, because the principle of refrigeration is a KEY COMPONENT to defrost in the winter...

Why? Because everyone knows a car air conditioner pulls moisture out, right? That crystal clear water that leaks out under air conditioned cars....
WELL, in the winter, rainy weather for example, is moisture. ....No remove moisture and no defogg.

Doc

The AC unti is driven by a belt coming from the crankshaft. The belt is attached to the ac compressor which has a clutch unit that is suppose to let the compresser pully spin freely. by the sounds of your problem you might need a new pully/clutch for your ac compressor

if you have a check engine code on,scan it will point you at problem area,if notand if timing belt is pass due may be wearing out and jumped a few knotches,i would inspect it anyway

IF THE PEDAL IS LOW CHECK FOR AIR IN THE SYSTEM. IF THATS NOT THE PROBLEM YOU WILL HAVE REPLACE THE CLUTCH MABY A COLLAPSED PRESSURE PLATE