Having this same issue on my M113k after doing a full Ignition refresh, coils, plugs and wires. Car runs great 3/4 throttle. Anything more, or after the kick down switch it immediately pulls power and starts breaking up horribly, while throwing a check engine light and the codes are the same as yours, misfiring on random cylinders. Pull over and clear the codes and it runs perfect again until heavy throttle. I used NGK IR's, Bremi Wires from FCP and eBay coils. I'm going to go back through and make sure everything is seated properly, I have a feeling its either the wires not seated properly or the cheap coils. Glad you got yours sorted.
A friend of mine also informed me this is a common occurrence if valve seals are leaky, oil can get onto plugs and cause misfires, ecu won't reset until key cycle. My case was likely a combination of that and possibly ebay coils, I'm sure my valve stem seals are pretty toast at 160k
You lucky @^@^😉 I certainly don't thrust 3rd party supplies for important items. That's why I ordered now an original behr radiator instead of 1 from ebay. It cost something 😅 but it's quality 👍🏼
With multiple cylinder misfires, my first thought would be a global issue like a fueling problem rather than multiple single point failures occurring at the same time like bad spark plugs or coilpacks 🤷♂. BTW, at 2 mins is that your son mimicking the oil pump whine? 😄
The best part about out this gen Merc is how they fix themselves
Good to know it's all good.
Having this same issue on my M113k after doing a full Ignition refresh, coils, plugs and wires. Car runs great 3/4 throttle. Anything more, or after the kick down switch it immediately pulls power and starts breaking up horribly, while throwing a check engine light and the codes are the same as yours, misfiring on random cylinders. Pull over and clear the codes and it runs perfect again until heavy throttle. I used NGK IR's, Bremi Wires from FCP and eBay coils. I'm going to go back through and make sure everything is seated properly, I have a feeling its either the wires not seated properly or the cheap coils. Glad you got yours sorted.
A friend of mine also informed me this is a common occurrence if valve seals are leaky, oil can get onto plugs and cause misfires, ecu won't reset until key cycle. My case was likely a combination of that and possibly ebay coils, I'm sure my valve stem seals are pretty toast at 160k
what kind of scan tool is that ? i would suggest doing a complete oil change spark plugs filters
amzn.to/4aVLGAd
You lucky @^@^😉
I certainly don't thrust 3rd party supplies for important items.
That's why I ordered now an original behr radiator instead of 1 from ebay.
It cost something 😅 but it's quality 👍🏼
I need that manual swap in my life lol
With multiple cylinder misfires, my first thought would be a global issue like a fueling problem rather than multiple single point failures occurring at the same time like bad spark plugs or coilpacks 🤷♂. BTW, at 2 mins is that your son mimicking the oil pump whine? 😄