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P0300 Diagnostic Trouble Code Discussion for January 2023

Multiple Misfire Detected

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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2018 Hyundai Elantra LE 2.0L Misfire VIN: 5NPD84LF3J
P0300: random misfire. car came in running bad with misfire code. coils 3 & 4 where burnt. replace all coils and spark plugs started car and # 3 coil gets hot and melts replace coil and same. looks like the pcm is bad. can i get a used pcm and program or do i have to get new...
January 10, 2023
2017 Ford Mustang GT 5.0L High Idle VIN: 1FA6P8CF8H
P0300: Cylinder Misfire Detected. I am not the original technician that started work on this vehicle. Previous tech smoke tested the intake manifold and found small minor leaks. Previous tech changed out Mass Air Flow sensor. No change. Vehicle has abnormally high idle. Idle is around 2000...
January 23, 2023
2007 GMC Canyon SLT 3.7L Misfire VIN: 1GTDT13E87
P0300: Engine Misfire Detected. Truck came about a month ago, check engine light on and flashing, running rough. Replaced coils and plugs, oil change due to excessive fuel in oil. Vehcile ran good till 2 days ago. Same symptons except cylinder 5 missing badly. Replaced coil and plug just...
January 26, 2023
2012 Ram 1500 Laramie Longhorn 5.7L Misfire VIN: 1C6RD7PT2C
P0300: Random multiple misfire. HELP!!! Thank you all in advance for your time and trouble on this monster. Looking for a little wisdom. I would LOVE a simple solution. Truck came in for a cylinder 2 misfire. Determined bad lifter and damaged cam on #2 exhaust lobe. Customer approved the...
January 27, 2023