Hi everyone! I have a problem with my 2003 Hyundai Elantra, 2.0L G4GC automatic. Last week, out of nowhere, in the morning, it started shaking a lot and stalled. I restarted it and it started normally, without any problems, and we drove about 50 meters before it stalled again. I took it to the shop and they already replaced the spark plugs with NGK iridium plugs, replaced the ignition coil, and replaced the coil wires. They removed the idle air control valve and cleaned it (it's the metal one). After cleaning it, on Saturday, at idle, the engine was running smoothly, the RPMs weren't fluctuating, but the engine and exhaust sounded off, like it wasn't running normally, even though the RPMs on the tachometer were steady. But since I know the engine is usually quite smooth, I knew it still wasn't running right, so I took it to have the injectors and fuel rail cleaned and tested. They told me they were fine, and the fuel pump was fine too. But that's how it stayed. I left the shop, and now, on Wednesday, it started shaking again and wants to stall. The RPMs drop to zero, then climb back up, and it jerks, won't accelerate, and you can smell gasoline when you press the accelerator. I've already replaced the idle air control valve, camshaft position sensor, crankshaft position sensor, fuel pump, and the entire ignition module, and it still gives me the same problem: it starts shaking, the RPMs become unstable, and it wants to stall, until it finally does. Or sometimes it almost stalls and then goes back to normal. 

Please help me.🙏🏼🙏🏼🙏🏼🙏🏼

My Elantra's RPMs Drop and it Stalls