Cylinder misfire?

I parked my car about seven months due to a lack of resources for maintenance. At that time, the battery would not hold a charge. I worked through the entire electrical system related to that issue, beginning with an alternator test. It passed and I replaced it successfully. At this point I began tracing wires for shorts anywhere at all. I found none, but noticed my starter looked raggedy. I unmounted it and the plastic molding around the power node collapsed, so I successfully replaced the starter as well. From that moment, the car has run successfully, without any issues.

Yesterday, I took the car to a certified inspector to renew the tags and by the time I left, the car was misfiring randomly any time it was in gear. When I confronted the inspector, he informed me of a fouled relay, which I also replaced, yet the random misfiring continues. I need any help I can get in diagnosing the real issue, as money is tight and my electrical systems knowledge is limited.

Thanks in advance.
Lion

Honestly, I think that inspector was a quack. I assume he meant the relay was somehow shorted out. I can be certain the cause is not old fuel, as the car idles fine in park, even at higher rpm's. The car must first warm up before the random misfire symptoms will manifest. Getting the computer to register on the diagnostics either fails altogether as if there is nothing to connect to, or it shows P0300 - random/multiple cylinder misfire.

I feel like a doctor over-analyzing a patient. I said I went through my wiring looking for a short, but never even touched my ignition wires or checked the plugs themselves. Let it be know that the small gauge of wiring on said ignition wires (which actually, my engine is an 04 Galant engine) will increase resistance as the vehicle heats up, thus causing multiple cylinder misfires. Specifically the wiring between distributor and ignition coils. After replacing them, I drove her hard and couldn't get the symptoms to manifest again. She now runs like a scalded dog again. Thanks for trying to help guys, I really appreciate it. Hopefully this response will help you aid others in the future.

2002 dodge stratus is chugging and the code manufacturer admissions comes up what is it?

Yes emissions

It's a 2.4 L