4 Cylinder 113
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
4 Cylinder 113
Hi Fellows and hello from Baden-Baden.
OK, so cruising down the A5 just past the Hockenheim Ring at a easy 105 MPH and coming fast from behind is an RS6. So to make him feel really bad I wait until he has to get on the binders. Already in 3rd I nail it and I'm gone! Around 160 MPH and an IAT of about 135, instantly I'm seriously down on power with a CEL. Alright, I recognize right away I've lost at least 2 cylinders. Now down to 60 MPH I read the codes on the DASHDAQ which tell me I'm now driving a 4 cylinder E55. 1-3-5-7 are deader than Kelsey's nuts. So, I exit the A5, park and shut down; clear the codes; re-fire and the Beast is back; no CEL. Really a strange anomaly. I recently turned off my secondary O2 sensors, but I can't draw a connection there. Obviously the ECU shut down the entire bank, but why?
Okay - - - there you have it - - - let the speculation begin.
My first thought is that perhaps an O2 sensor is on the way out.
Oh yeah, I left my STAR DAS back at the house (Don't leave home without it) and I won't get home until next week.
OK, so cruising down the A5 just past the Hockenheim Ring at a easy 105 MPH and coming fast from behind is an RS6. So to make him feel really bad I wait until he has to get on the binders. Already in 3rd I nail it and I'm gone! Around 160 MPH and an IAT of about 135, instantly I'm seriously down on power with a CEL. Alright, I recognize right away I've lost at least 2 cylinders. Now down to 60 MPH I read the codes on the DASHDAQ which tell me I'm now driving a 4 cylinder E55. 1-3-5-7 are deader than Kelsey's nuts. So, I exit the A5, park and shut down; clear the codes; re-fire and the Beast is back; no CEL. Really a strange anomaly. I recently turned off my secondary O2 sensors, but I can't draw a connection there. Obviously the ECU shut down the entire bank, but why?
Okay - - - there you have it - - - let the speculation begin.
My first thought is that perhaps an O2 sensor is on the way out.
Oh yeah, I left my STAR DAS back at the house (Don't leave home without it) and I won't get home until next week.
Last edited by AgSilver; Sep 4, 2014 at 11:23 AM. Reason: Typo
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From: Houston
2003 W211 E55, 2003 W220 S600
In DAS you will see cylinder shut off for protection so chances are you detonated a bit and the save the engine the cylinders were shut off.. my speculation since the car runs fine after reset
Go fault counter in the ECU and you should see the shut off
Go fault counter in the ECU and you should see the shut off
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
At an extended WOT and about 5500 RPM with a Big H/E, phenolics and Johnson pump it seems about right. The I/C's just don't have the capacity. It recovers quickly to about 15F over ambient while cruising at 100 MPH.
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
That was my initial thought, but only cyls 1-3-5-7 showed misfire (on DASHDAQ). As I said, my DAS is back at the house. If that O2 sensor is going bad, that might cause the problem. 75k on original sensors. Probably a good idea to replace them. What do you think?
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2004 E55 AMG; 1991 Previa
On another note, do you really think a bad sensor reading would cause an entire bank to just cut out? Seems like a crazy safety measure. Curious to see what your STAR DAS spits out.
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From: Houston
2003 W211 E55, 2003 W220 S600
if the knock sensor is bad a code will be store which you can view via DAS, it will not trigger a CEL.
Never seen a knock sensor go bad on a M113k but on a M156 all the time
Never seen a knock sensor go bad on a M113k but on a M156 all the time
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2004 W211 E55 AMG >>gone but not forgotten > W123 280E > W124 E280 > W126 380SE
Scary, I'd be panicking and parking up till I could get to a DAS but I'm probably a little over cautious when it comes to my 55. I know you were barely there but at the higher end of the E55 speed scale she starts getting a dry throat from not drinking enough fuel though of course that's more likely to affect number 8 cylinder. I'm looking to put a looped fuel rail in for that reason and some peace of mind. Far more knowledgeable people here than me though - good luck bro, hope it's something simple and at least you got the kill in first.
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
About 10 days ago while in Salzburg, Austria in stop & go traffic, it threw a code, but no misfire that I was aware of. The DASHDAQ indicated a possible cat problem, but I didn't jot down the code before I cleared it and there was nothing stored when I later checked it with DAS. So, I'll go ahead and replace the 02's when I get back next week. I suspect that's the problem.
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
I think Shardul may have hit it. If an 02 sensor went weird on one bank and resulted in simultaneous detonation on a bank of 4 cylinders, the safety system instantly shut them down. We'll see.
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From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
Scary, I'd be panicking and parking up till I could get to a DAS but I'm probably a little over cautious when it comes to my 55. I know you were barely there but at the higher end of the E55 speed scale she starts getting a dry throat from not drinking enough fuel though of course that's more likely to affect number 8 cylinder. I'm looking to put a looped fuel rail in for that reason and some peace of mind. Far more knowledgeable people here than me though - good luck bro, hope it's something simple and at least you got the kill in first.
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
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one car at a time
I don't believe the o2 sensor would cause this problem, given you were at WOT when the problem happened...My guess is really bad knock or defective knock sensor....
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
A couple of questions as I don't have DAS/WIS/EPC with me: Where is the knock sensor located and is there 1 or 2 sensors?
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From: Northern California
2004 E55 AMG; 1991 Previa
The reason I was thinking O2 is that whatever it was it took down only one entire bank (don't forget it threw a code last week sitting in traffic relating to a cat and I believe that could only come from an O2 sensor). I'm running ARAL 102 octane, which is more than adequate.
A couple of questions as I don't have DAS/WIS/EPC with me: Where is the knock sensor located and is there 1 or 2 sensors?
A couple of questions as I don't have DAS/WIS/EPC with me: Where is the knock sensor located and is there 1 or 2 sensors?
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If one of the cats are clogged it could cause a lot of heat from the exhaust on that bank and maybe shut down for safety but it would be a first, check cats and O2 sensor, curious to see what star says
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2004 E55 AMG; 1991 Previa
Not necessarily 'clogged' just 'worn out' in a sense. Clogged cats are not intermittent problems. I had a broken/clogged cat in a z06 that was a result from the entire rh bank coil packs going bad. It ran like crap every time we started it. I would also like to see what codes it spits out.
Last edited by biggking; Sep 5, 2014 at 12:45 PM.
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Yeah, I figured it had to be there, but as you said, they seem to be very reliable.
Good thought, however everything (except the packs) are new within the last 3K miles.
Yup, I'm curious too. Still leaning towards an O2. Still I have to wait 'til Tuesday when I get back to the house.
Yup, me too. The DASHDAQ has only limited capabilities.
The fact that today I cautiously made 2 WOT runs through 3rd with no anomalies suggests to me a faulty O2 and remember I threw a CAT code about 10 days ago while in traffic.
Thanks for all good ideas fellas'. We'll know more on Tuesday.
So, maybe the cat is not doing its job properly and spiked a reading on the o2 sensor? You are running a higher octane fuel. The o2 sensor simply reads afr ratio on that bank, and the spiked reading might have caused the ecu to enter 'safe mode'. Still worth checking the ignition coils and fuel system on the left side, plugs too maybe.
Not necessarily 'clogged' just 'worn out' in a sense. Clogged cats are not intermittent problems. I had a broken/clogged cat in a z06 that was a result from the entire rh bank coil packs going bad. It ran like crap every time we started it. I would also like to see what codes it spits out.
The fact that today I cautiously made 2 WOT runs through 3rd with no anomalies suggests to me a faulty O2 and remember I threw a CAT code about 10 days ago while in traffic.
Thanks for all good ideas fellas'. We'll know more on Tuesday.
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2004 E55 AMG; 1991 Previa
Yeah, I figured it had to be there, but as you said, they seem to be very reliable.
Good thought, however everything (except the packs) are new within the last 3K miles.
Yup, I'm curious too. Still leaning towards an O2. Still I have to wait 'til Tuesday when I get back to the house.
Yup, me too. The DASHDAQ has only limited capabilities.
The fact that today I cautiously made 2 WOT runs through 3rd with no anomalies suggests to me a faulty O2 and remember I threw a CAT code about 10 days ago while in traffic.
Thanks for all good ideas fellas'. We'll know more on Tuesday.
Good thought, however everything (except the packs) are new within the last 3K miles.
Yup, I'm curious too. Still leaning towards an O2. Still I have to wait 'til Tuesday when I get back to the house.
Yup, me too. The DASHDAQ has only limited capabilities.
The fact that today I cautiously made 2 WOT runs through 3rd with no anomalies suggests to me a faulty O2 and remember I threw a CAT code about 10 days ago while in traffic.
Thanks for all good ideas fellas'. We'll know more on Tuesday.
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haters crazy
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From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
I have brand new pumps and filter . . . hmmm. Got to think about this. Could be a one off event. Ill know more when I read the memory next week.
Anyway, off to the MB museum tomorrow.
