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Looking for some help on this one. Last couple weeks been getting misfire on cyl 4. Replaced coil pack and did all plugs. Seemed to fix the issue. Couple days later engine light blinking and misfire is back. It’s not constant and driving me nuts. It’ll run fine and out of nowhere start misfiring and running like crap. If I pull over, shut off car, and start back up, running smoothly again and engine light off. Only codes that show are P0354 and P0304. 2014 C300. Any help is greatly appreciated.
Looking for some help on this one. Last couple weeks been getting misfire on cyl 4. Replaced coil pack and did all plugs. Seemed to fix the issue. Couple days later engine light blinking and misfire is back. It’s not constant and driving me nuts. It’ll run fine and out of nowhere start misfiring and running like crap. If I pull over, shut off car, and start back up, running smoothly again and engine light off. Only codes that show are P0354 and P0304. 2014 C300. Any help is greatly appreciated.
Your scanner is saying the coil circuit connector is bad.
I am sure you have looked at it well already... so now check for "oil-in-harness" around your engine bay... ECU, Lambda.
If you bought coil packs off of amazon or ebay that claim to be "original," they are fake replicas including the packaging. Ensure you purchase OEM/replacements from a reputable seller.
02-22-2024, 09:30 AM
