M276 Misfire (No Fault Code)
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Joined: May 2023
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2016 W212 E350
M276 Misfire (No Fault Code)
Hello, I have a 2016 E350 M276 with 75K
I have experenced a possible misfire intermittently for the past week. this car has been flawless for the the 70k i have owened it.
Scan tool showes "NO Faults"
Engine Light Blinks during this issue.
Problem fixes it self in a few minutes.
any sugesstions?
I have experenced a possible misfire intermittently for the past week. this car has been flawless for the the 70k i have owened it.
Scan tool showes "NO Faults"
Engine Light Blinks during this issue.
Problem fixes it self in a few minutes.
any sugesstions?
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
Likes: 3,228
2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Oil in engine wire harnesses? Cps or solenoids leaking, coils and plugs need replacement, gas cap on tightly?
common issues.
bad gas?
what code reader - icarsoft?
common issues.
bad gas?
what code reader - icarsoft?
MBWorld Fanatic!
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
Check that you have no oil in the wire harness of the cam shaft position sensors and the “magnets”. This is easy check by just pulling the connectors and checking them for oil. If oil is found replace the part and better yet replace them all as they will all go soon after you find one leaking.
Out Of Control!!
Joined: Apr 2019
Posts: 11,921
Likes: 6,769
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
troubleshooting pointers...
Hello, I have a 2016 E350 M276 with 75K
I have experenced a possible misfire intermittently for the past week. this car has been flawless for the the 70k i have owened it.
Scan tool showes "NO Faults"
Engine Light Blinks during this issue.
Problem fixes it self in a few minutes.
Any sugesstions?
I have experenced a possible misfire intermittently for the past week. this car has been flawless for the the 70k i have owened it.
Scan tool showes "NO Faults"
Engine Light Blinks during this issue.
Problem fixes it self in a few minutes.
Any sugesstions?
You need to collect hard evidence of issues to help guide you to solutions.
Minimum scheduled maintenance is good but
You've got to test things out to land the right fix -Or you will soon have a complete parts store inventory in your garage...
1-- SPARK :
A lot of things can help contribute to misfired mixtures.
I would move the coils (and plugs) around on one bank while suspecting a cracked coil boot.
See what cylinder the scanner reports as bad!
2-- FUEL :
After getting done with spark you're going to check on fuel pressures and "LongTerm Fuel Trims" bank1/2 data inside the ECU (Leave the direct injectors alone!) .
3-- CONTROLS:
After that things will get more
Prepare by getting a CTEK float charger to help keep up your main battery.
Do a CAR REBOOT to help temporarily sanitize soft-crashed modules.
Check out this w212 thread...
Troubleshooting quickly is simple for nobody.
Last edited by CaliBenzDriver; May 3, 2023 at 03:29 PM.
Member
Joined: Dec 2021
Posts: 144
Likes: 72
From: Calverton MD 20705
2013 W212 E350 RWD
if it's not solid then it's not broken yet! That's what my car did before my low pressure fuel pump went out. Your car has three! A CEL would be thrown by the Low pressure or high pressure pump. P1CCF= Low pressure pump must be replaced.
