to much of it can stop our system
Dirty fuel filter
There are several reasons an engine may stall while driving, here are three.The fuel tank is empty and the engine is starved of fuel.Not enough power to climb a hill causing a stall.Faulty or damp electronics on a petrol engine can also cause a stall.
If you mean each time you engage car in any gear forward or reverse & it immediately stalls - you have a bad torque converter. Start engine, put foot on brake, put car in NEUTRAL, if it DOES NOT stall, but it does stall if you repeat this test when you put car in drive or reverse = bad torque converter - It's called a "stall test"
What causes a 1997 Pontiac sunfire gt with a 2.4 liter engine to stall when stopped at a light
The year, make, model and engine info would help but a serious vacuum leak could do that.
The crank sensor probably needs to be replaced.
More info such as the year and engine size would help.
possible bad TPS, IAC, or ECT sensors
Need to know the year and make, It would help answer.
Removing the oil cap with the engine running causes a vacuum leak in the positive crankcase ventilation. This causes too much air to enter the cylinders at once, which results in a stalling engine.
Bad fuel pump will cause the engine to stall or not start at all. A bad automatic transmission will cause the vehicle to jerk and not run smoothly.