1. Hook up a scanner and check for codes.
2. Check your intake filter for obstructions, like leaves, mouse nests, or homeless people. This could halt air flow to the engine. It's a 30,000 mile part, so worth replacing.
3. If it's been 30,000 miles or more since your last fuel filter change, do that. After 30,000 miles, they begin to clog up and keep fuel from getting to the engine, as well as burn out the fuel pump.
4. Make sure the mass airflow (MAF) sensor in the throttlebody is fully plugged in. A loose plug could result in a voltage issue.
5. Clean the MAF with CRC Mass Airflow Sensor Cleaner. A dirty MAF can lead to the wrong information about airflow causing the wrong fuel and spark to happen.
6. Check the throttlebody for gummy filth. If it's dirty, clean it with throttlebody cleaner. A gummy throttlebody plate could be getting stuck or not be letting in the right amount of air.
7. Pull out your spark plugs and check them. They should be clean with a gap (check this gently!) at .60". Stock spark plugs are supposed to last 100,000 miles and not an inch more. If you're close, it's worth putting in a fresh set of stock iridium spark plugs. A set of stock spark plug wires are also cheap insurance.
8. You could have some sort of severe vacuum leak. I'd venture to guess if it's killing the engine, you could fit a rolled-up magazine into the hole.
9. You might have a stuck injector. It could be stuck open or closed, either starving the cylinder or flooding it with fuel.
