PLEASE HELP
I own a 2012 Ha25s suzuki alto NON ECO imported it myself on a mileage of 36k in dec 2015 using it since then ,its almost been two years now and the mileage is 76k oil i use is shell 5w 30 blue color car is always maintained from bubble cars wash since day one , coolant , gear oil fuel hose all things are intact , and i got the throttle body cleaned on 75800km , all of a sudden car has started giving problem , when i start the car , it is ok as soon as i shift to reverse or drive the car turns off , then again I start it and give acceleration to make it warm ,it gets fine but as soon as i remove the feet from pedal it turns off ,
Note : it happened for the first time in two years , checked it from scanner all things are ok even the cat is ok and so are the plugs and injectors , it is very annoying while iam driving and i slow down at a bump or traffic signal to dead slow speed the car shuts off , and as it an auto it is difficult to start it as again you have to put it in D , but then again cars behaves the same way , even if you have been driving it since 30 mins, the car is not heating up at all nothing wrong please help me with this, I am from karachi ,
cat cleaned at 70k ok
fuel injector ok
spark plugs ok
air filter ok
radiator ok
fuel pipe ok
petrol tank full and high octane ok
battery new ok
computer scan no codes ok
ecu reset done ok
car has never been touched or being tampered in terms of electrical wiring all things are stock as it came from japan