Multiple Misfires 2007 S65
12-09-2021, 05:43 PM
#1
Newbie
Thread Starter
Multiple Misfires 2007 S65
Hi all...recent purchase of a S65 on BAT. I'm a new Mercedes owner. Within a few days of delivery it runs sluggish and engine light goes on. It blinked a few times then stayed constant. OB2 code is P0307, # 7 misfire. Limped it home. Next day drove the neighborhood, smooth as can be no issues, engine light still on. Set appt with a highly recommended Mercedes independent mechanic for next Monday 12/13/21. Next day drove again , Engine light now disappeared on its own. The beast runs fine not a hiccup...today I drove a 70 mile round trip, after appx 60 miles it as I pulled away from a light it lost power, engine light on again. I had the OB2 with me and got 8 codes all on various cylinders showing misfires. After sitting on side of road for 20 mins I started it up and once again smooth as glass , no issues, good acceleration...engine light still on. In This past July OEM plugs and coils were replaced. Anyone have any thoughts?
12-16-2021, 08:05 PM
#3
Hi all...recent purchase of a S65 on BAT. I'm a new Mercedes owner. Within a few days of delivery it runs sluggish and engine light goes on. It blinked a few times then stayed constant. OB2 code is P0307, # 7 misfire. Limped it home. Next day drove the neighborhood, smooth as can be no issues, engine light still on. Set appt with a highly recommended Mercedes independent mechanic for next Monday 12/13/21. Next day drove again , Engine light now disappeared on its own. The beast runs fine not a hiccup...today I drove a 70 mile round trip, after appx 60 miles it as I pulled away from a light it lost power, engine light on again. I had the OB2 with me and got 8 codes all on various cylinders showing misfires. After sitting on side of road for 20 mins I started it up and once again smooth as glass , no issues, good acceleration...engine light still on. In This past July OEM plugs and coils were replaced. Anyone have any thoughts?
12-20-2021, 07:41 PM
#4
Junior Member
Greetings - I don't know what "BAT" is, but I would suggest reaching out to the previous owner and ask them. If you're experiencing this stuff within just a few days of getting the car, there is a high probability the previous owner had the same issues. Hope that helps :-)
12-20-2021, 07:53 PM
#5
Greetings - I don't know what "BAT" is, but I would suggest reaching out to the previous owner and ask them. If you're experiencing this stuff within just a few days of getting the car, there is a high probability the previous owner had the same issues. Hope that helps :-)
had similar misfire issue on S600 if an entire bank is missing it’s very likely the voltage transformer
12-20-2021, 08:03 PM
#6
Junior Member
Here is another suggestion, reach out to Tasos Moschatos, he has a shop and makes lots of YouTube videos.
He knows alot. Here is his latest video:
If you go to his about page, you can get his email address here: https://www.youtube.com/c/TasosMoschatos/about
He knows alot. Here is his latest video:
