Passenger side cylinders misfire
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
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2009 S600
Passenger side cylinders misfire
It's me again. I have a 2009 s600. Same issue as before. The brakes do work now I got that fixed but I still do have the passenger side cylinders misfiring. There's not really much outside information on that one but I will be taking apart the intake for that side of the engine. Maybe I connected something wrong or not well enough. If you have any questions then let me know.
Last edited by xx2pro4uxx21; Jul 29, 2023 at 04:00 PM.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
Here's a video of it running. https://youtube.com/shorts/71ChPf7N3...2U3wxubtKRGxpT
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S500
why is there no lid on the coolant reservoir?
you need decent quality code scanner - can't do much without one on any modern car - whilst it sounds nasty (mostly the mic on the phone doing odd stuff - quite normal sadly) the engine isn't exactly jumping about - can you feel a miss at the exhaust outlets ?
you need decent quality code scanner - can't do much without one on any modern car - whilst it sounds nasty (mostly the mic on the phone doing odd stuff - quite normal sadly) the engine isn't exactly jumping about - can you feel a miss at the exhaust outlets ?
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
why is there no lid on the coolant reservoir?
you need decent quality code scanner - can't do much without one on any modern car - whilst it sounds nasty (mostly the mic on the phone doing odd stuff - quite normal sadly) the engine isn't exactly jumping about - can you feel a miss at the exhaust outlets ?
you need decent quality code scanner - can't do much without one on any modern car - whilst it sounds nasty (mostly the mic on the phone doing odd stuff - quite normal sadly) the engine isn't exactly jumping about - can you feel a miss at the exhaust outlets ?
Senior Member
Joined: Jun 2015
Posts: 257
Likes: 100
From: South Padre Is, Texas
2007 S600, 911 & XJ8
XX:
Read this "War Story":
https://mbworld.org/forums/s-class-w...s-misfire.html
It's worth a try... My problem has never returned in 4 years...
Regards... Mark
Read this "War Story":
https://mbworld.org/forums/s-class-w...s-misfire.html
It's worth a try... My problem has never returned in 4 years...
Regards... Mark
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
XX:
Read this "War Story":
https://mbworld.org/forums/s-class-w...s-misfire.html
It's worth a try... My problem has never returned in 4 years...
Regards... Mark
Read this "War Story":
https://mbworld.org/forums/s-class-w...s-misfire.html
It's worth a try... My problem has never returned in 4 years...
Regards... Mark
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
XX:
Read this "War Story":
https://mbworld.org/forums/s-class-w...s-misfire.html
It's worth a try... My problem has never returned in 4 years...
Regards... Mark
Read this "War Story":
https://mbworld.org/forums/s-class-w...s-misfire.html
It's worth a try... My problem has never returned in 4 years...
Regards... Mark
Trending Topics
Senior Member
Joined: Jun 2015
Posts: 257
Likes: 100
From: South Padre Is, Texas
2007 S600, 911 & XJ8
XX, as said, worth a try... My next vote would be VT.
Here's something I wrote in the other thread:
I’ve dealt with a failing coil pack (CP) before and that gives you random misfires, (at least it did in my case). As I understand it, the V-12 has left and right, wholly self-contained, coil packs. But, they can't be powered by 12V DC, so there’s a single Transformer (VT), that raises the voltage for both CP’s. And, it sits smack-damn in the middle of the absolutely Hottest part of the engine. But, the VT, although in one box, uses totally independent circuits for left and right CP's. So, the VT fails either left or right, but not both L&R. CP’s, on the other hand, fail independently. And, I won’t take credit for it but came to the same conclusion as Rupp Clark with v12icpack.com, IT’S FLIP A COIN whether the CP or VT is bad when you lose one cylinder bank, like I did. And, even Xenrty won't tell you which it is...
On the other hand, I think a total CP failure -- as opposed to a random misfiring CP-- is rarer than a one side VT failure....
Regards... Mark
Here's something I wrote in the other thread:
I’ve dealt with a failing coil pack (CP) before and that gives you random misfires, (at least it did in my case). As I understand it, the V-12 has left and right, wholly self-contained, coil packs. But, they can't be powered by 12V DC, so there’s a single Transformer (VT), that raises the voltage for both CP’s. And, it sits smack-damn in the middle of the absolutely Hottest part of the engine. But, the VT, although in one box, uses totally independent circuits for left and right CP's. So, the VT fails either left or right, but not both L&R. CP’s, on the other hand, fail independently. And, I won’t take credit for it but came to the same conclusion as Rupp Clark with v12icpack.com, IT’S FLIP A COIN whether the CP or VT is bad when you lose one cylinder bank, like I did. And, even Xenrty won't tell you which it is...
On the other hand, I think a total CP failure -- as opposed to a random misfiring CP-- is rarer than a one side VT failure....
Regards... Mark
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Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
XX, as said, worth a try... My next vote would be VT.
Here's something I wrote in the other thread:
I’ve dealt with a failing coil pack (CP) before and that gives you random misfires, (at least it did in my case). As I understand it, the V-12 has left and right, wholly self-contained, coil packs. But, they can't be powered by 12V DC, so there’s a single Transformer (VT), that raises the voltage for both CP’s. And, it sits smack-damn in the middle of the absolutely Hottest part of the engine. But, the VT, although in one box, uses totally independent circuits for left and right CP's. So, the VT fails either left or right, but not both L&R. CP’s, on the other hand, fail independently. And, I won’t take credit for it but came to the same conclusion as Rupp Clark with v12icpack.com, IT’S FLIP A COIN whether the CP or VT is bad when you lose one cylinder bank, like I did. And, even Xenrty won't tell you which it is...
On the other hand, I think a total CP failure -- as opposed to a random misfiring CP-- is rarer than a one side VT failure....
Regards... Mark
Here's something I wrote in the other thread:
I’ve dealt with a failing coil pack (CP) before and that gives you random misfires, (at least it did in my case). As I understand it, the V-12 has left and right, wholly self-contained, coil packs. But, they can't be powered by 12V DC, so there’s a single Transformer (VT), that raises the voltage for both CP’s. And, it sits smack-damn in the middle of the absolutely Hottest part of the engine. But, the VT, although in one box, uses totally independent circuits for left and right CP's. So, the VT fails either left or right, but not both L&R. CP’s, on the other hand, fail independently. And, I won’t take credit for it but came to the same conclusion as Rupp Clark with v12icpack.com, IT’S FLIP A COIN whether the CP or VT is bad when you lose one cylinder bank, like I did. And, even Xenrty won't tell you which it is...
On the other hand, I think a total CP failure -- as opposed to a random misfiring CP-- is rarer than a one side VT failure....
Regards... Mark
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
XX, as said, worth a try... My next vote would be VT.
Here's something I wrote in the other thread:
I’ve dealt with a failing coil pack (CP) before and that gives you random misfires, (at least it did in my case). As I understand it, the V-12 has left and right, wholly self-contained, coil packs. But, they can't be powered by 12V DC, so there’s a single Transformer (VT), that raises the voltage for both CP’s. And, it sits smack-damn in the middle of the absolutely Hottest part of the engine. But, the VT, although in one box, uses totally independent circuits for left and right CP's. So, the VT fails either left or right, but not both L&R. CP’s, on the other hand, fail independently. And, I won’t take credit for it but came to the same conclusion as Rupp Clark with v12icpack.com, IT’S FLIP A COIN whether the CP or VT is bad when you lose one cylinder bank, like I did. And, even Xenrty won't tell you which it is...
On the other hand, I think a total CP failure -- as opposed to a random misfiring CP-- is rarer than a one side VT failure....
Regards... Mark
Here's something I wrote in the other thread:
I’ve dealt with a failing coil pack (CP) before and that gives you random misfires, (at least it did in my case). As I understand it, the V-12 has left and right, wholly self-contained, coil packs. But, they can't be powered by 12V DC, so there’s a single Transformer (VT), that raises the voltage for both CP’s. And, it sits smack-damn in the middle of the absolutely Hottest part of the engine. But, the VT, although in one box, uses totally independent circuits for left and right CP's. So, the VT fails either left or right, but not both L&R. CP’s, on the other hand, fail independently. And, I won’t take credit for it but came to the same conclusion as Rupp Clark with v12icpack.com, IT’S FLIP A COIN whether the CP or VT is bad when you lose one cylinder bank, like I did. And, even Xenrty won't tell you which it is...
On the other hand, I think a total CP failure -- as opposed to a random misfiring CP-- is rarer than a one side VT failure....
Regards... Mark
Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
As I wrote to you earlier, you have two separate problems. You have a bad VT. I understand you replaced it a few months back, but was it an OEM, was it ebay (always a bad idea). I would call Clark and order a new VT. He is calling it a Boost Box but it is a VT. I still have my old OEM VT and I am in Washington DC if that is close to where you are. Swapping a VT is a 15 minute job; so I would start there. Also, once you do the swap, I am pretty sure you need to clear all the codes on restart. Then take it for a spin and see if it still goes into limp mode. I am betting this will solve your problem. You may also have a coil pack problem on either side, but this will help you to diagnose it further. Clark can also rent/sell you CPs if you end up with more codes after the VT install indicating which CP or both CPs is the offender. Keep us posted.
A well maintained S Class is the finest motorcar in the World.
A well maintained S Class is the finest motorcar in the World.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
As I wrote to you earlier, you have two separate problems. You have a bad VT. I understand you replaced it a few months back, but was it an OEM, was it ebay (always a bad idea). I would call Clark and order a new VT. He is calling it a Boost Box but it is a VT. I still have my old OEM VT and I am in Washington DC if that is close to where you are. Swapping a VT is a 15 minute job; so I would start there. Also, once you do the swap, I am pretty sure you need to clear all the codes on restart. Then take it for a spin and see if it still goes into limp mode. I am betting this will solve your problem. You may also have a coil pack problem on either side, but this will help you to diagnose it further. Clark can also rent/sell you CPs if you end up with more codes after the VT install indicating which CP or both CPs is the offender. Keep us posted.
A well maintained S Class is the finest motorcar in the World.
A well maintained S Class is the finest motorcar in the World.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
As I wrote to you earlier, you have two separate problems. You have a bad VT. I understand you replaced it a few months back, but was it an OEM, was it ebay (always a bad idea). I would call Clark and order a new VT. He is calling it a Boost Box but it is a VT. I still have my old OEM VT and I am in Washington DC if that is close to where you are. Swapping a VT is a 15 minute job; so I would start there. Also, once you do the swap, I am pretty sure you need to clear all the codes on restart. Then take it for a spin and see if it still goes into limp mode. I am betting this will solve your problem. You may also have a coil pack problem on either side, but this will help you to diagnose it further. Clark can also rent/sell you CPs if you end up with more codes after the VT install indicating which CP or both CPs is the offender. Keep us posted.
A well maintained S Class is the finest motorcar in the World.
A well maintained S Class is the finest motorcar in the World.
Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
Very possible. Did you clear the codes before restart and get a new code. The codes will indicate which cylinder failed. If it is only one or two codes on the same side, order the rental coil pack from Clark. The rental coil pack will come with new silicon plug inserts. And the old inserts could also be the problem. I would still also upgrade the VT to his Boost Box, but it is really easy for me to spend your money!!
My S600 had very poor maintenance at the Embassy that owned it. I got it at 55K miles. I had to replace both coil packs and the VT; and it has run very nicely since. I now have 90K miles on it and I am planning to replace both coil packs and the VT as a purely maintenance preventive this year. Remember, these cars were originally purchased by rich people and typically not well maintained. You will need to bring the car back to good spec using non-Chinese parts. Once you do the work; it will all be worth the cost and hassle.
Keep us posted.
My S600 had very poor maintenance at the Embassy that owned it. I got it at 55K miles. I had to replace both coil packs and the VT; and it has run very nicely since. I now have 90K miles on it and I am planning to replace both coil packs and the VT as a purely maintenance preventive this year. Remember, these cars were originally purchased by rich people and typically not well maintained. You will need to bring the car back to good spec using non-Chinese parts. Once you do the work; it will all be worth the cost and hassle.
Keep us posted.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
Very possible. Did you clear the codes before restart and get a new code. The codes will indicate which cylinder failed. If it is only one or two codes on the same side, order the rental coil pack from Clark. The rental coil pack will come with new silicon plug inserts. And the old inserts could also be the problem. I would still also upgrade the VT to his Boost Box, but it is really easy for me to spend your money!!
My S600 had very poor maintenance at the Embassy that owned it. I got it at 55K miles. I had to replace both coil packs and the VT; and it has run very nicely since. I now have 90K miles on it and I am planning to replace both coil packs and the VT as a purely maintenance preventive this year. Remember, these cars were originally purchased by rich people and typically not well maintained. You will need to bring the car back to good spec using non-Chinese parts. Once you do the work; it will all be worth the cost and hassle.
Keep us posted.
My S600 had very poor maintenance at the Embassy that owned it. I got it at 55K miles. I had to replace both coil packs and the VT; and it has run very nicely since. I now have 90K miles on it and I am planning to replace both coil packs and the VT as a purely maintenance preventive this year. Remember, these cars were originally purchased by rich people and typically not well maintained. You will need to bring the car back to good spec using non-Chinese parts. Once you do the work; it will all be worth the cost and hassle.
Keep us posted.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
Actually since I was going to do spark plugs and valve cover gaskets anyway. I might as well take off the coil packs. Would I be able to see if anything is wrong? Maybe those inserts you mentioned.
Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
I think you are making a very good decision about changing the valve cover gaskets and the spark plugs, Typically what happens is a valve cover leaks oil into the spark plug and or coil pack, killing that cylinder and frequently the coil pack too. So if you are genuinely serious about the car, I would go whole hog: do the valve cover gaskets both sides, do the spark plugs with 24 iridium plugs, rent/buy Clark's coil packs (if you rent both sides and don't need one, he will refund you the core less a rental fee), buy his Boost Box VT, replace the downstream O2 sensors with Bosch OEMs, clear the codes; and report back here. I know it is not inexpensive. But it is an S600 and it like a fickle mistress will give you tremendous happiness at astounding cost. Make a decision about whether you can afford it. I did; and I have been very happy.
Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
I don't get a cut of Clark's stuff, but I have been very happy with his products all around. He has a consuming obsession with quality.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
You can examine the silicon inserts after you remove the coil pack. It is possible that a hole was burned electrically through the insert(s). Such damage would be highly visible. If you buy Clark's stuff, he will provide new silicon inserts as part of the coil pack.
I don't get a cut of Clark's stuff, but I have been very happy with his products all around. He has a consuming obsession with quality.
I don't get a cut of Clark's stuff, but I have been very happy with his products all around. He has a consuming obsession with quality.
Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
He has a web site www.v12icpack.com and he has a bunch of youtubes (look under Clark Rupp and v12icpack.com). He is based in California. Some of his old YTs trace the problem Mercedes had with the original design of the coil pack and the problem of individual coils in a single cassette). He outlines his fix only to be frustrated by Chinese parts suppliers and poor quality years ago. So he redesigned the specs and had his coils made for him to spec. This guy is the real deal. He will also take calls, you can find his email and phone number on the website.
Keep us posted.
Keep us posted.
Member
Joined: Jun 2023
Posts: 190
Likes: 76
From: Portland, Oregon
2009 S600 V-12
It's me again. I have a 2009 s600. Same issue as before. The brakes do work now I got that fixed but I still do have the passenger side cylinders misfiring. There's not really much outside information on that one but I will be taking apart the intake for that side of the engine. Maybe I connected something wrong or not well enough. If you have any questions then let me know.
I would try to gather as much data as possible before ripping into something.
Johnny
Last edited by johnnyrocket52; Jul 30, 2023 at 02:59 PM.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
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2009 S600
For the history, recently whenever I would start the car it would run fine until it warmed up and it would start misfiring from cylinders 9, 11,12 and 2 intermittently. Which is why I already have the things for the spark plugs. The car also has kind of bad valve cover gaskets which is also why I already have the parts for those as well. This time I took it on a longer drive about 4 hours in total. Whenever I got back there wasn't anything wrong immediately. The only thing that was a little weird is after stopping to turn around and come back, it didn't start the first time. And on the way back, the temperature Guage was reading about 20° lower than normal. So I got back home and didn't notice anything out of the ordinary so I stopped the car. The next morning I come to start it and now it was misfiring from the passenger cylinders and the brakes weren't working. The brakes turned out to be the vacuum hose that runs from the intake manifold to the brake booster had melted. There is a different thread on here about that specific issue. Other than that. The work I've done to the car is just replace the voltage transformer about 3 months ago, as well as the alternator and the battery a little before that. The current error codes are ones for cylinders 1-6 misfire as well as multiple random misfires. I've tried two voltage transformers and neither made a difference.
Member
Joined: Jun 2023
Posts: 190
Likes: 76
From: Portland, Oregon
2009 S600 V-12
For the history, recently whenever I would start the car it would run fine until it warmed up and it would start misfiring from cylinders 9, 11,12 and 2 intermittently. Which is why I already have the things for the spark plugs. The car also has kind of bad valve cover gaskets which is also why I already have the parts for those as well. This time I took it on a longer drive about 4 hours in total. Whenever I got back there wasn't anything wrong immediately. The only thing that was a little weird is after stopping to turn around and come back, it didn't start the first time. And on the way back, the temperature Guage was reading about 20° lower than normal. So I got back home and didn't notice anything out of the ordinary so I stopped the car. The next morning I come to start it and now it was misfiring from the passenger cylinders and the brakes weren't working. The brakes turned out to be the vacuum hose that runs from the intake manifold to the brake booster had melted. There is a different thread on here about that specific issue. Other than that. The work I've done to the car is just replace the voltage transformer about 3 months ago, as well as the alternator and the battery a little before that. The current error codes are ones for cylinders 1-6 misfire as well as multiple random misfires. I've tried two voltage transformers and neither made a difference.
In forum it has been discuss to replace the CPs at 60-70k miles. I did both sides with along with the spark plugs with the upgraded CPs from Clark Rupp. Big improvement in engine acceleration response.
I read in the forum and Clark Rupp’s website, the VT mounted on top of the hottest part of the engine can go bad and take out left/right or both CP’s. The VT can get hammered by CPs going bad. Then after replacing the bad CP, the VT takes a dump and takes out your new CP!
So I ordered and replaced the stock VT with the upgraded Boost Box from Clark, which has fused left/right supplies, meaning your CPs are protected from being murdered from VT (aka Boost Box) failing. The Boost Box also has industrial grade components, Mercedes put hobby components, and is mounted away from the heat of the motor like the firewall. I don’t get any kick back either, but the replacements of these high failure components with the mods Clark offers just makes sense for reliability sake.
And the prices make it hard to beat.
johnny
Last edited by johnnyrocket52; Jul 31, 2023 at 01:44 AM.
Thread Starter
Junior Member
Joined: Sep 2021
Posts: 71
Likes: 9
2009 S600
I’m very new to this world class car. I just got a 2009 77,000mi with a complete blacked out service history. My focus is to go through the high failure items and get them baselined. This is my daily driver.
In forum it has been discuss to replace the CPs at 60-70k miles. I did both sides with along with the spark plugs with the upgraded CPs from Clark Rupp. Big improvement in engine acceleration response.
I read in the forum and Clark Rupp’s website, the VT mounted on top of the hottest part of the engine can go bad and take out left/right or both CP’s. The VT can get hammered by CPs going bad. Then after replacing the bad CP, the VT takes a dump and takes out your new CP!
So I ordered and replaced the stock VT with the upgraded Boost Box from Clark, which has fused left/right supplies, meaning your CPs are protected from being murdered from VT (aka Boost Box) failing. The Boost Box also has industrial grade components, Mercedes put hobby components, and is mounted away from the heat of the motor like the firewall. I don’t get any kick back either, but the replacements of these high failure components with the mods Clark offers just makes sense for reliability sake.
And the prices make it hard to beat.
johnny
In forum it has been discuss to replace the CPs at 60-70k miles. I did both sides with along with the spark plugs with the upgraded CPs from Clark Rupp. Big improvement in engine acceleration response.
I read in the forum and Clark Rupp’s website, the VT mounted on top of the hottest part of the engine can go bad and take out left/right or both CP’s. The VT can get hammered by CPs going bad. Then after replacing the bad CP, the VT takes a dump and takes out your new CP!
So I ordered and replaced the stock VT with the upgraded Boost Box from Clark, which has fused left/right supplies, meaning your CPs are protected from being murdered from VT (aka Boost Box) failing. The Boost Box also has industrial grade components, Mercedes put hobby components, and is mounted away from the heat of the motor like the firewall. I don’t get any kick back either, but the replacements of these high failure components with the mods Clark offers just makes sense for reliability sake.
And the prices make it hard to beat.
johnny
