Your engine produces torque(turning power) and revs, and these are related. You can't get more than a certain amount of torque out of the engine at a given number of revs. If you hit a slope in the wrong gear/at the wrong speed, then forcing the car forward will require more torque than the engine can deliver, and it will stall. It's very much like trying to ride a bike uphill in the wrong gear.
Generally speaking when a car stalls out going uphill, a few things come to a mechanical mind. 1. Going uphill produces a strain on the engine and drive components, if you have the old points and coil type vehicle one could suspect a faulty ignition coil as the culprit. 2. A vehicle on an incline may be low on fuel and thus stalls on a hill because it is starving for fuel on this incline. 3. A faulty float inside the float bowl of your carburetor may be the problem.
The light comes on when the car stalls because the engine is not running and the pump therefore is not pumping. The pressure will always be 0 when the engine stalls and the light is directly related to pressure. This is normal, you have no problem, other than the engine stalling.
Use a code reader to find out why the check engine light is on.
maybe your idle to low, if it continues, I have the fluid injection relay switch replaced.
Mine did that, it was the fuel pump!
Could be a clogged catalytic converter, rotor cap is bad, fuel filter is clogged, fuel pump dying.
Guess: Best Guess is defrost or AC are on and the engine is having trouble running the compressor. This is common on these cars when they have another fault with the way they run. Second best guess, The engine has a run problem, and the extra load causes it to be worse.
Yes
I had this problem with mine, then the engine management light would come on. Turned out to be the crankshaft sensor. (Cambelt off job)
If the torque converter does not unlock, the engine will stall.
From a source further uphill, a river in a mountain for instance.
you need a new cam positioning sensor installed