Rough idle, fuel pressure error on full tank m156
Thread Starter
Member
Joined: Jun 2018
Posts: 109
Likes: 2
C63 AMG W204
Rough idle, fuel pressure error on full tank m156
Hi there,
posting here cuz community of c63 much bigger than ml63, engine is same.
I have rought idle on D when I stopped on red traffic light, engine and transmission trannys was changed and thats not helped. No errors on that thing.
Found errors only on full tank
3699 Fuel pressure control: The upper limit value is reached P0191 // come first time right after refuel till full tank
3699 Rail pressure sensor has malfunction // second time
anybody knows what a hell is going on?
No check engine, checked vacuum leak, didn't found anything.
Checked by star diagnosis fuel pumps, both give normal voltage.
I saw lot of threads about P0191 and seems there is no solutions, or maybe I didn't found any?
posting here cuz community of c63 much bigger than ml63, engine is same.
I have rought idle on D when I stopped on red traffic light, engine and transmission trannys was changed and thats not helped. No errors on that thing.
Found errors only on full tank
3699 Fuel pressure control: The upper limit value is reached P0191 // come first time right after refuel till full tank
3699 Rail pressure sensor has malfunction // second time
anybody knows what a hell is going on?
No check engine, checked vacuum leak, didn't found anything.
Checked by star diagnosis fuel pumps, both give normal voltage.
I saw lot of threads about P0191 and seems there is no solutions, or maybe I didn't found any?
Thread Starter
Member
Joined: Jun 2018
Posts: 109
Likes: 2
C63 AMG W204
Newbie
Joined: May 2022
Posts: 11
Likes: 0
2014 c63
I'm having issues with my 2014 C63 it has a code stored 3699 I replaced the crank case event tube fuel injectors and fuel filter as well as the fuel rail pressure sensor Any idea of what it might be?
Junior Member
Joined: Jun 2020
Posts: 21
Likes: 0
From: San Francisco
2010 C63
I'm having the same code. I also replaced my fuel injectors, fuel pump and spark plugs. I get random very rough idle that often leads to the car stalling multiple times before running fine again.
