Car shut down when foot not on the accelerator

You are low on transition fluid.

Clutch plate and pressure plate seem to be too weak to pull the car. Or one of the CV joints is detached from the gear box. To test the clutch plate, park the car on flat surface. Pull the hand brake up, start the car, depress the foot brake pedal, depress the clutch pedal, put the car in 1st gear, press the gas pedal and leave the clutch pedal at once, while keeping the brake pedal depressed.
Follow one of the two following statements:
1. Engine does not shut down and remain start. (Clutch plate, pressure plate and clutch bearing defective - Replace all as a set)
2. Engine shuts down. (Clutch system is OK and does not require any repair).

Clutch plate and pressure plate seem to be too weak to pull the car. To test the clutch plate, park the car on flat surface. Pull the hand brake up, start the car, depress the foot brake pedal, depress the clutch pedal, put the car in 1st gear, press the gas pedal and leave the clutch pedal at once, while keeping the brake pedal depressed.
Follow one of the two following statements:
1. Engine does not shut down and remain start. (Clutch plate, pressure plate and clutch bearing defective - Replace all as a set)
2. Engine shuts down. (Clutch system is OK and does not require any repair).

Try starting your car with your foot lightly on the accelerator pedal about a quarter way down. If the engine continues to run with your foot on the pedal, then you have a loose or bad air flow sensor or there is an air leak downstream of the sensor. Check the connection to the sensor and check to see if the intake pipes are connected well with no leaks or disconnects. I have seen this problem numerous times.

I would have the ignition module tested.

To understand the problem with your car, you must first understand that when you are pressing down on the accelerator pedal with your foot, you are NOT "stepping on the GAS". You are actually stepping on the AIR. If you are having to open the accelerator in order to get the engine started, it is because the engine is not getting enough air to start on it's own. When you let up on the accelerator, you are shutting off the air.
It is the job of the Idle Air Control (IAC) solenoid (or motor) to allow enough air into the engine so the engine can idle when the accelerator is closed.

You MOST LIKELY have a bad IAC.

Flow valve in the transmission is sticking most likely.this is usually caused by some other failure creating metal particals that should not be in the system.Good luck!

maps sensor

its very important that the throttle body especially around the throttle blade be spotless clean or they will stall every now and then. then progress to refuse to idle at all. take off the rubber air intake pipe from the top of throttle body [has 3 torqes screws] open throtle by hand and look for carbon/grease/soot etc were the throttle sits when closed. clean with toothbrush and some caeb cleaner get all black off and dont forget the blade, both sides and the edges. scrub then rinse with carb cleaner untill shiny.spray some cleaner in the hole that is on top off the body to. that is your idle air controll motor port.put back together.it will be hard to start at first so hold gas pedal half way down untill it starts then slowly [real slow] let foot off untill you are no longer pressing it. put in reverse and let it idle there a few seconds then do the same in drive. that should do it. sometimes it may stall a couple of times when driving dont hold foot on gas just let it die then restart this allows the computer to readjust its idle stratagee

when you do that the engine is in the clear flood mode, and shuts the injectors, i suspect leaking injectors, could also be in the throttle body, idle air control or throttle pos sensor