w220 error codes 02 sensor?
#1
Junior Member
Thread Starter
w220 error codes 02 sensor?
w220 s320 petrol 1999mod
Hey I got error codes p0300, p0301, p0302, p0303...
Its a real mess I guess because it can be so many things...
I just changed the MAF but this didnt help... I've added Fuel injec cleaner, didnt work. So I started to think about the O2 sensors... And I read them off, just need some help to read them as I have low knowledge of this.
What do you think of these readings? When I restart the car its fine, until I accelerate, and it starts to shake and goes off on cylinders. Turning it on and off again its fine until acceleration, also happens in gear PARK when I take down the pedal to about 3000+ rpm. I looked at long term bank 2 and was seeing its only negative? what does that mean? and the long term always positive..? add and sub gas? need some professional help
Hey I got error codes p0300, p0301, p0302, p0303...
Its a real mess I guess because it can be so many things...
I just changed the MAF but this didnt help... I've added Fuel injec cleaner, didnt work. So I started to think about the O2 sensors... And I read them off, just need some help to read them as I have low knowledge of this.
What do you think of these readings? When I restart the car its fine, until I accelerate, and it starts to shake and goes off on cylinders. Turning it on and off again its fine until acceleration, also happens in gear PARK when I take down the pedal to about 3000+ rpm. I looked at long term bank 2 and was seeing its only negative? what does that mean? and the long term always positive..? add and sub gas? need some professional help
Last edited by smint007; 11-25-2016 at 04:06 PM.
#3
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2016 S63, 2013 SL63
So misfire on whole bank of V6.
I would look for what is common to that bank and start there.
I had a like problem and it was one bad injector (very rare).
When searching I found a bad cat can do that as well.
Good luck!
I would look for what is common to that bank and start there.
I had a like problem and it was one bad injector (very rare).
When searching I found a bad cat can do that as well.
Good luck!
#4
Junior Member
Thread Starter
Ok, so I've read the voltage of the o2 sensors, bank 2 seems to be fine....
When I read bank 1, the 1st sensor is fine and the 2nd sensor is jumping all over.
So this tells me that i need to replace the catalytic converter bank 1.
So if the catalytic converter on bank 1 is failing... this will affect only cylinder 1,2,3?
and not 4,5,6.. ?
When I read bank 1, the 1st sensor is fine and the 2nd sensor is jumping all over.
So this tells me that i need to replace the catalytic converter bank 1.
So if the catalytic converter on bank 1 is failing... this will affect only cylinder 1,2,3?
and not 4,5,6.. ?
#5
Junior Member
Thread Starter
Ok so now I've changed all the 6 pluggs on bank 1. cyl1,2,3
And swapped the coils from 1 side to the other. No fix
90% sure its the cat, gonna deliver it for a diagnose tomorrow and see if i'm right.
Want to be sure before I put in money on a new cat, and the problem beeing fuel injector... xD Ill reply tomorrow.
And swapped the coils from 1 side to the other. No fix
90% sure its the cat, gonna deliver it for a diagnose tomorrow and see if i'm right.
Want to be sure before I put in money on a new cat, and the problem beeing fuel injector... xD Ill reply tomorrow.
#7
Member
I just came across this exact same issue with the S430 that I'm resurrecting. I replaced the engine and fired it up....got the same error codes.
NEVER did an error code come up for a Catalytic Converter.
I did the swapping of the coils, but then thought...this engine worked fine before I installed it....it has to be the car, not the engine.
I had some extra parts laying around and cut the front catalytic converter out and put in one that I knew was acceptable. The front cat was all broken up on the inside. I reconnected it with an beginner's MIG weld job on the final connection (while installed and missing the top of the pipe) and started it up again. This time....getting a fairly loud hissing sound coming from my last connection (because it was not a good weld it was leaking).
And, at that point, the "lightbulb turned on".
The rear converter was totally clogged with the debris from the front converter causing ridiculous back pressure.
This back pressure was causing the misfires and only on the one bank.
I cut out the rear converter, tacked in another known working converter and put it back together. Fired it up and is running great!!!
Clogged rear Catalytic Converter caused by front Catalytic Converter breaking apart
NEVER did an error code come up for a Catalytic Converter.
I did the swapping of the coils, but then thought...this engine worked fine before I installed it....it has to be the car, not the engine.
I had some extra parts laying around and cut the front catalytic converter out and put in one that I knew was acceptable. The front cat was all broken up on the inside. I reconnected it with an beginner's MIG weld job on the final connection (while installed and missing the top of the pipe) and started it up again. This time....getting a fairly loud hissing sound coming from my last connection (because it was not a good weld it was leaking).
And, at that point, the "lightbulb turned on".
The rear converter was totally clogged with the debris from the front converter causing ridiculous back pressure.
This back pressure was causing the misfires and only on the one bank.
I cut out the rear converter, tacked in another known working converter and put it back together. Fired it up and is running great!!!
Clogged rear Catalytic Converter caused by front Catalytic Converter breaking apart
Last edited by The Shoeman; 11-30-2016 at 07:32 PM. Reason: typo
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#8
Junior Member
Thread Starter
I just came across this exact same issue with the S430 that I'm resurrecting. I replaced the engine and fired it up....got the same error codes.
NEVER did an error code come up for a Catalytic Converter.
I did the swapping of the coils, but then thought...this engine worked fine before I installed it....it has to be the car, not the engine.
I had some extra parts laying around and cut the front catalytic converter out and put in one that I knew was acceptable. The front cat was all broken up on the inside. I reconnected it with an beginner's MIG weld job on the final connection (while installed and missing the top of the pipe) and started it up again. This time....getting a fairly loud hissing sound coming from my last connection (because it was not a good weld it was leaking).
And, at that point, the "lightbulb turned on".
The rear converter was totally clogged with the debris from the front converter causing ridiculous back pressure.
This back pressure was causing the misfires and only on the one bank.
I cut out the rear converter, tacked in another known working converter and put it back together. Fired it up and is running great!!!
Clogged rear Catalytic Converter caused by front Catalytic Converter breaking apart
NEVER did an error code come up for a Catalytic Converter.
I did the swapping of the coils, but then thought...this engine worked fine before I installed it....it has to be the car, not the engine.
I had some extra parts laying around and cut the front catalytic converter out and put in one that I knew was acceptable. The front cat was all broken up on the inside. I reconnected it with an beginner's MIG weld job on the final connection (while installed and missing the top of the pipe) and started it up again. This time....getting a fairly loud hissing sound coming from my last connection (because it was not a good weld it was leaking).
And, at that point, the "lightbulb turned on".
The rear converter was totally clogged with the debris from the front converter causing ridiculous back pressure.
This back pressure was causing the misfires and only on the one bank.
I cut out the rear converter, tacked in another known working converter and put it back together. Fired it up and is running great!!!
Clogged rear Catalytic Converter caused by front Catalytic Converter breaking apart
#9
Member
Just curious , did you clear the error codes after the converter replacement ,
Did you replace both converters on the right side?
you stated you changed the plugs already in a previous post so I'm not sure if that's it but if you were having misfires on the new plugs, that might have damaged the plugs,.. .but I'm only guessing on that. what do others think about this guess?
Did you replace both converters on the right side?
you stated you changed the plugs already in a previous post so I'm not sure if that's it but if you were having misfires on the new plugs, that might have damaged the plugs,.. .but I'm only guessing on that. what do others think about this guess?
#10
Junior Member
Thread Starter
Just curious , did you clear the error codes after the converter replacement ,
Did you replace both converters on the right side?
you stated you changed the plugs already in a previous post so I'm not sure if that's it but if you were having misfires on the new plugs, that might have damaged the plugs,.. .but I'm only guessing on that. what do others think about this guess?
Did you replace both converters on the right side?
you stated you changed the plugs already in a previous post so I'm not sure if that's it but if you were having misfires on the new plugs, that might have damaged the plugs,.. .but I'm only guessing on that. what do others think about this guess?
Yeah i changed both cats on the right.
cleared codes before change.
Did only change the plugs on bank 1 i ordered the rest so we will see