Mercedes-Benz Forum banner

1 - 2 of 2 Posts

·
Registered
2004 ml500
Joined
·
196 Posts
Discussion Starter #1
with my code reader i have multiple misfire cylinder 1 cylinder 2 cylinder 3 and cylinder 4 misfire along with 02 sensor code. car barley moves runs but very rough and wont go past 40mph with petal to the floor. 1997 s420 165k miles. could it be timing chain or all 4 coils ? any ideas would be greatly appriciated. thank you
 

·
Premium Member
1997 S600 (sold)
Joined
·
4,660 Posts
Which O2 sensor code? For a quick diagnostic test of the O2 sensor, swap the pre-cat O2 sensors between bank 1 and bank 2 and see what happens. If the problem follows the O2 sensor, you have your culprit. If not, then look elsewhere in bank 1.

Brett
 
1 - 2 of 2 Posts
Top