Y car boggs

Could be plugged up catalityc converter.

Sometimes this is a crankshaft position sensor problem. The sensor helps regulate fuel pressure by monitoring RPM. If this sensor under reads your RPM, then you will not get enough fuel for the RPM.

Fuel filter, fuel pump, Bad Gas !

Engine stall or RPM fluctuates at idle.

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

Clean your MAF (mass air flow sensor).

Google a Youtube video on how to do it.

You just need electrical parts cleaner or MAF cleaner.

Without any other symptoms it is hard to diagnose; could be water in the fuel or a plugged up air filter, that effects idle first, take it out and see if it idles fine, if so get a new one. Take out fuel filter and dump in a glass bowl and analyse for water... get a new one... Is it different when the engine i hot or cold?

If you need further help, I’m available over the phone at https://www.6ya.com/expert/robert_573a00ba7e399076

sounds like the alternator went bad. and wasnt charging battery, when headlights demanded power there wasnt enough to supply light and motor , so it shut down, recharge battery check battery connections then have alternater check, good luck. hope this helps.

check plugs and wires

fuel pump or bad coil

did you run a fuel cleaner?