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Re: Miss firing?? Not sure!!!
A faulty TPS usually doesn't cause a misfire. Just eratic shifting in my experience. You can check the TPS with a volt meter but in my opinion you'd be wasting your time.
It's most likely a coil wire. They go out frequently. You can easily diagnose what cylindar it is by disconnecting the coil wire connectors one by one and starting the engine. If the missing improves it's probably the cylindar in the same possition on the oposite side. If the missing gets worse it's not the one you disconnected. If it stays the same that could be the faulty coil wire.
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