Codes tonight
Thread Starter
MBWorld Fanatic!
Joined: Nov 2009
Posts: 3,589
Likes: 68
From: Texas
C63 507 AMG DA Car #19
Codes tonight
Got CEL tonight, easy driving picking up dinner in the 04clk-k:
P0171 System too Lean (Bank 1)
Also got Bank 2 same code for Bank 2.
Quick search says it's MAS, or O2 sensors, or vac leak.
Time to diagnose.
P0171 System too Lean (Bank 1)
Also got Bank 2 same code for Bank 2.
Quick search says it's MAS, or O2 sensors, or vac leak.
Time to diagnose.
Last edited by betrezra; Oct 2, 2011 at 01:48 PM.
MBWorld Fanatic!
Joined: Mar 2008
Posts: 3,632
Likes: 150
C63s Cabriolet, BMW M4, Civic
Got CEL tonight, easy driving picking up dinner in the 04clk-k:
P0171 System too Lean (Bank 1)
Also got Bank 2 same code for Bank 2.
I reset codes, checked for vac leaks (all OK), hooked up dash-daq, watching fuel trims, 02 readings...... no CEL, no more codes, all seems OK now, after another 20 miles of various driving conditions. NO WOT runs until I figure this out. No codes or issues after reset and 20 miles.
Just want to confirm with you.... I suspect it's my ebay MAS Air Meter which came from german auto supply in a Bosch box.... but perhaps it was a reman or bad unit?
Ordered a new Bosch unit from Autohauz, AZ.
Does this sound like my MAS is going out?
I'm running stock paper filters.
Fleabay MAS has literally 5K miles on it.
thx.
I see a wide-band O2 sensor in my future just for pc of mind.
P0171 System too Lean (Bank 1)
Also got Bank 2 same code for Bank 2.
I reset codes, checked for vac leaks (all OK), hooked up dash-daq, watching fuel trims, 02 readings...... no CEL, no more codes, all seems OK now, after another 20 miles of various driving conditions. NO WOT runs until I figure this out. No codes or issues after reset and 20 miles.
Just want to confirm with you.... I suspect it's my ebay MAS Air Meter which came from german auto supply in a Bosch box.... but perhaps it was a reman or bad unit?
Ordered a new Bosch unit from Autohauz, AZ.
Does this sound like my MAS is going out?
I'm running stock paper filters.
Fleabay MAS has literally 5K miles on it.
thx.
I see a wide-band O2 sensor in my future just for pc of mind.
It does sounded like the MAS due to lean runnung on both banks but then it should also show another code for the bad MAS. It could also be your fuel pump issue. Are you running a boost-a-pump to up the pressure on your fuel pump?
Thread Starter
MBWorld Fanatic!
Joined: Nov 2009
Posts: 3,589
Likes: 68
From: Texas
C63 507 AMG DA Car #19
No boost a pump.
Only stock fuel pump with 30k miles.
Kleemann boost sensative fuel pressure regulator (ups fuel pressure w/ ref boost).
I'm ordering a zeitronics wideband o2 sensor for pc of mind.
Only stock fuel pump with 30k miles.
Kleemann boost sensative fuel pressure regulator (ups fuel pressure w/ ref boost).
I'm ordering a zeitronics wideband o2 sensor for pc of mind.
Thread Starter
MBWorld Fanatic!
Joined: Nov 2009
Posts: 3,589
Likes: 68
From: Texas
C63 507 AMG DA Car #19
A-ha! Success.
Pulled air intake off, and inspected everything:
The little rubber hose from the mass air meter to the drivers side valve cover had popped off the drivers side valve cover.
Cleaned it up, and then went over every hose connection with zip ties.
Something all you kleemann guys should watch out for (if you already don't).
I find myself inspecting this motor every couple weeks just for good measure.
Wideband O2 sensor setup still in the works, for safe measure.
Thx all.
Pulled air intake off, and inspected everything:
The little rubber hose from the mass air meter to the drivers side valve cover had popped off the drivers side valve cover.
Cleaned it up, and then went over every hose connection with zip ties.
Something all you kleemann guys should watch out for (if you already don't).
I find myself inspecting this motor every couple weeks just for good measure.
Wideband O2 sensor setup still in the works, for safe measure.
Thx all.
Last edited by betrezra; Oct 2, 2011 at 01:46 PM.
Thread Starter
MBWorld Fanatic!
Joined: Nov 2009
Posts: 3,589
Likes: 68
From: Texas
C63 507 AMG DA Car #19
Trying to take after the zen-master PTE 
Thx for your support sir on all things that go FAST!!!!!!
I'll post up results when I get the Zietronics Wideband hooked up with data-logging.
I really want the data-logging working BEFORE I take it to the track.
Thx for your support sir on all things that go FAST!!!!!!
I'll post up results when I get the Zietronics Wideband hooked up with data-logging.
I really want the data-logging working BEFORE I take it to the track.
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look
Verdad Gallardo
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
MBWorld Fanatic!
Joined: Jul 2010
Posts: 4,748
Likes: 0
From: A Canadian in Dubai, United Arab Emirates
'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)
A-ha! Success.
Pulled air intake off, and inspected everything:
The little rubber hose from the mass air meter to the drivers side valve cover had popped off the drivers side valve cover.
Cleaned it up, and then went over every hose connection with zip ties.
Something all you kleemann guys should watch out for (if you already don't).
I find myself inspecting this motor every couple weeks just for good measure.
Wideband O2 sensor setup still in the works, for safe measure.
Thx all.
Pulled air intake off, and inspected everything:
The little rubber hose from the mass air meter to the drivers side valve cover had popped off the drivers side valve cover.
Cleaned it up, and then went over every hose connection with zip ties.
Something all you kleemann guys should watch out for (if you already don't).
I find myself inspecting this motor every couple weeks just for good measure.
Wideband O2 sensor setup still in the works, for safe measure.
Thx all.
