My 2002 Ford Ranger 4x4 will not stay running

Security feature. Assuming u have a remote key to enter vehicle.... Disconnect battery + & -, hold terminals together for 5 minutes, this is called a capacitive discharge. It resets all memory. Hook battery back up. Unlock doors using key fobik, lock doors, unlock again start truck and your good. If you have a chip key theres a different procedure to get out of security mode. Call ford theyll tell u. This is only assuming your engine runs and sounds good when it starts. If it chugs or clunks or whines or whistles let me know. L8

Does it only do it at idle or while trying to stop at a sign or something but runs ok as long as you are giving it the gas? If so its probably the idle air control valve either dirty or faulty. Could also be the throttle plate needs cleaning.

i got the same problem in my 99 thinking i got a faulty map sensor on my tank or fuel pressure loss somewhere (but no leaking fuel) do you have power to your power distribution box key in on? because i dont ?????