SL/R230: 2005 Mercedes SL600 engine shuts off or LH bank misfires
#1
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2005 Mercedes SL600
2005 Mercedes SL600 engine shuts off or LH bank misfires
Hello,
I am hoping someone can help me with this problem. It's a gorgeous mars red 2005 mercedes s600 with the twin turbo V12 engine. Car has lots of power when it's cold. Here is what I and my mechanic noticed:
- starts up in the morning great. 100% power, everything is great. Let it idle for half hour, engine shuts off on it own.
- if you restart it, it again runs fine, but it will shut off after a while if you let it sit at idle.
The car has just over 100k miles and when I first got it, it had a CEL with a misfire on all cylinders on left bank: 7,8,9,10,11,12. We thought of course that the coil pack needed to be replaced so we bought a brand new one. The new coil pack is causing the same issues. I took it on a test drive after we put in the new the coil pack and it was BLAZING fast. For a couple of miles! And then it started misfiring and struggling to do 60mph!
We are really miffed on why the engine shuts off on its own too...
Please help,
Val
I am hoping someone can help me with this problem. It's a gorgeous mars red 2005 mercedes s600 with the twin turbo V12 engine. Car has lots of power when it's cold. Here is what I and my mechanic noticed:
- starts up in the morning great. 100% power, everything is great. Let it idle for half hour, engine shuts off on it own.
- if you restart it, it again runs fine, but it will shut off after a while if you let it sit at idle.
The car has just over 100k miles and when I first got it, it had a CEL with a misfire on all cylinders on left bank: 7,8,9,10,11,12. We thought of course that the coil pack needed to be replaced so we bought a brand new one. The new coil pack is causing the same issues. I took it on a test drive after we put in the new the coil pack and it was BLAZING fast. For a couple of miles! And then it started misfiring and struggling to do 60mph!
We are really miffed on why the engine shuts off on its own too...
Please help,
Val
#2
Junior Member
Anybody my 04 SL600 V12 has a similar problem, it started after gas fill up, now has just enough power to get to 75mph but it's very weak & misfiring
#3
Super Member
I have also problems with the engine.
After I install a tune the engine light have flash al the time.
Really don't now what the problem is.
Last time I let the engine idle run and after 1/2 hour it's shut down the whole right cylinder bank. I read the fault codes and it told me to change the ignition module. I bought this expensive module and change it. Start the engine and after few seconds the right cylinder bank shut down again. ( Have not read the fault codes)
Now I have the cold air intake project so I had no time to look it closer again.
For me it's impossible that al the coils 7-12 are gone at the same time.
So any idea what the problem is?
#5
Junior Member
Strange I got no codes, no check engine lights, stop misfiring, so would the ignition module give me codes or lights ???
Last edited by stykshooter; 05-23-2015 at 07:51 PM. Reason: more detail added
#6
Member
I had same problem with my CLK it would randomly shut off, I would have to turn key to off and restart car. I bought a SL.
But I did not get codes with SDS, I really believe it was the Ignition Switch.
But I did not get codes with SDS, I really believe it was the Ignition Switch.