>> management light on the dash board lights up and the car starts
>> cutting off.

What code is being stored?

>> Anyone have a clue of whats going on with the car???

Sounds like it might be an air/fuel mixture issue.
>> Please give suggestions!!!!

Find out what the code is and what it means. That will start to give ideas where to look.

My guess is that when you are running on 'gas' (I assume you mean natural gas or propane) is that the mixture is too lean at idle so it cuts out.