04 wj 4.7l, missfire code, check gauge light......
I ran to the store today, about 5 minutes in to the trip my check engine light came on (code 303) and check gauge light also came on, oil pressure gauge was not functioning. I was pulled into Walgreens as this happened and killed the engine. when the code came on my left turn signal also blinks 4 times faster than usual, but the right signal blinked at normal speed. I briefly looked over the engine, didn't see anything really out of place (wasn't expecting to). if I looked up the code right it says cylinder #3 misfired. when the code came on nothing felt/sounded bad. my sisters 00 WJ has a dying oil pressure sender, so I figured mine was also going bad. I jiggled the end of the sender, started the engine, and then the gauge read properly. everything sounded normal and felt fine, didn't seem as if the cylinder was still missing. I drove back home, and it all went well. not sure if it really matters, but it was also around -6 degrees, and the jeep hasn't been ran for 4 days.
so I'm almost positive the oil gauge is due to a faulty sender, but I have no idea what's /causing the misfire, and the blinker issue. has this happened to anyone else?