Occasional sputter on startup
12-08-2009, 09:54 PM
#1
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Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Occasional sputter on startup
2005 SL600 w/ 20K miles
Situation:
Car cold - Perfect start, idle is up and comes back down after 20 seconds or so.
Car warm but sitting for less than an hour - Perfect start, jumps to life and idles where it's supposed to.
Car warm but sitting for 1 - 3 hours - Car sputters to start. Sounds like it it's missing in a cylinder or two, for only a brief second. I can either blip the throttle and all is well, or I can just let it work itself out, which only takes a second or two.
Car has zero performance issues.
Any V12TT guys ever experience this? Any ideas? First thought is something in the spark chain, but with only 20K miles, I have a hard time believing that. And the fact that it only does it after warm and sitting for more than an hour, but less than when it cools off. If the car sits for an hour or less, it roars to life as expected.
Of course, my times listed above are only estimates as I haven't pulled out the egg timer yet.
Situation:
Car cold - Perfect start, idle is up and comes back down after 20 seconds or so.
Car warm but sitting for less than an hour - Perfect start, jumps to life and idles where it's supposed to.
Car warm but sitting for 1 - 3 hours - Car sputters to start. Sounds like it it's missing in a cylinder or two, for only a brief second. I can either blip the throttle and all is well, or I can just let it work itself out, which only takes a second or two.
Car has zero performance issues.
Any V12TT guys ever experience this? Any ideas? First thought is something in the spark chain, but with only 20K miles, I have a hard time believing that. And the fact that it only does it after warm and sitting for more than an hour, but less than when it cools off. If the car sits for an hour or less, it roars to life as expected.
Of course, my times listed above are only estimates as I haven't pulled out the egg timer yet.
Last edited by Benz-O-Rama; 12-08-2009 at 09:57 PM.
12-09-2009, 08:34 AM
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Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Yep, straight 93 100% of the time.
I also found this:
https://mbworld.org/forums/sl-class-...g-problem.html
Someone also had the sputtering problem and I'll get the other phenomena stated by the OP occasionally, where the car will increase/decrease engine speed by a couple hundred RPM. However I never get a CEL.
In his last post in that thread, he states the fix was an ignition control module. Thoughts?
I also found this:
https://mbworld.org/forums/sl-class-...g-problem.html
Someone also had the sputtering problem and I'll get the other phenomena stated by the OP occasionally, where the car will increase/decrease engine speed by a couple hundred RPM. However I never get a CEL.
In his last post in that thread, he states the fix was an ignition control module. Thoughts?
Last edited by Benz-O-Rama; 12-09-2009 at 09:42 AM.
12-09-2009, 08:34 AM
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2010 E350
Mine has done it a couple of times. Checked with my scanner and it was one and somtimes a couple of cyl miss fires. I believe it may be a sign that a coil is going bad.
12-09-2009, 10:52 AM
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Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Interesting....
I never noticed the RPMs fluctuating until I got the exhaust work done. Now that I can hear the exhaust note, it's no longer being masked.
The occasional sputter on startup has happened since I've owned it. I've PMd the OP in that other thread asking for a part number.
I never noticed the RPMs fluctuating until I got the exhaust work done. Now that I can hear the exhaust note, it's no longer being masked.
The occasional sputter on startup has happened since I've owned it. I've PMd the OP in that other thread asking for a part number.
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12-10-2009, 08:46 AM
#8
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I NEVER had this issue until after I did an ECU tune. I have spoken with Jerry about this issue, and he is looking into it.
I am guessing at a possible heat soak issue do to the tune. Just a guess on my part.
Again, NEVER cold, but after 1-2 hours. I will wait for Jerry's diagnoses
I am guessing at a possible heat soak issue do to the tune. Just a guess on my part.
Again, NEVER cold, but after 1-2 hours. I will wait for Jerry's diagnoses
12-11-2009, 02:04 PM
#10
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I had the same issue and it started getting really bad. Coils were going bad and from what my tech told me it is a commmon problem witht he V12's, got to a point where it was misfiring a lot and had to replace both coil packs. An expensive repair but had to do it since I was selling her to a customer.
05-20-2010, 12:35 AM
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2005 SL600, 2007 Cadillac Escalade ESV, 1999 Jeep Wrangler Sport
Did you ever figure out what the problem was? My 2005 SL600 is at the dealer right now for the same prob. Drove fine Monday morning all over town, parked it for an hour, cranked it and the whole car started shuttering. Check engine light came on. I put fuel in it (93 always) and the shaking stopped, but CEL is still on. Did I mention car only has 24,000 miles? Ugh! Codes indicated cylinder misfires, etc.
05-22-2010, 12:17 AM
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His mama. Traded y0 mama in because she was squeaking.
Holy thread revival!
Ignition module (the square box in the middle...ish) of the engine.
Had mine replaced with the updated version with the aluminum case. Never had a problem after that.
Ignition module (the square box in the middle...ish) of the engine.
Had mine replaced with the updated version with the aluminum case. Never had a problem after that.
06-07-2010, 12:04 PM
#13
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2005 SL600 w/ 20K miles
Situation:
Car cold - Perfect start, idle is up and comes back down after 20 seconds or so.
Car warm but sitting for less than an hour - Perfect start, jumps to life and idles where it's supposed to.
Car warm but sitting for 1 - 3 hours - Car sputters to start. Sounds like it it's missing in a cylinder or two, for only a brief second. I can either blip the throttle and all is well, or I can just let it work itself out, which only takes a second or two.
Car has zero performance issues.
Any V12TT guys ever experience this? Any ideas? First thought is something in the spark chain, but with only 20K miles, I have a hard time believing that. And the fact that it only does it after warm and sitting for more than an hour, but less than when it cools off. If the car sits for an hour or less, it roars to life as expected.
Of course, my times listed above are only estimates as I haven't pulled out the egg timer yet.
Situation:
Car cold - Perfect start, idle is up and comes back down after 20 seconds or so.
Car warm but sitting for less than an hour - Perfect start, jumps to life and idles where it's supposed to.
Car warm but sitting for 1 - 3 hours - Car sputters to start. Sounds like it it's missing in a cylinder or two, for only a brief second. I can either blip the throttle and all is well, or I can just let it work itself out, which only takes a second or two.
Car has zero performance issues.
Any V12TT guys ever experience this? Any ideas? First thought is something in the spark chain, but with only 20K miles, I have a hard time believing that. And the fact that it only does it after warm and sitting for more than an hour, but less than when it cools off. If the car sits for an hour or less, it roars to life as expected.
Of course, my times listed above are only estimates as I haven't pulled out the egg timer yet.
I NEVER had this issue until after I did an ECU tune. I have spoken with Jerry about this issue, and he is looking into it.
I am guessing at a possible heat soak issue do to the tune. Just a guess on my part.
Again, NEVER cold, but after 1-2 hours. I will wait for Jerry's diagnoses
I am guessing at a possible heat soak issue do to the tune. Just a guess on my part.
Again, NEVER cold, but after 1-2 hours. I will wait for Jerry's diagnoses
Turns out that this issue is VERY common with ALL V-12 MB's
The cure, New CP sensors. It is a common fix for the V-12 that the dealers ALL know about.
#1 symptom, HARD starting after the the CP sensor gets hot, aka let it sit for an hour or so.
It has NOTHING to do with ANY tune.
PS: The car now starts ANY time, and at ANY temp.
CHECK your crank position sensors now guys
06-07-2010, 12:09 PM
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His mama. Traded y0 mama in because she was squeaking.
How do you propose we check our own CPS's?
Take it out, ask it how it's feeling, talk about it's feelings, make sure it's happy?
My issue was the ignition box. CPS was squared away and good to go.
Take it out, ask it how it's feeling, talk about it's feelings, make sure it's happy?
My issue was the ignition box. CPS was squared away and good to go.
06-07-2010, 12:40 PM
#15
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Get real my friend, just explain the hard starting to the rep, and they have it on file as a COMMON problem.
Tough crowd
06-07-2010, 12:42 PM
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His mama. Traded y0 mama in because she was squeaking.
Introduce myself first? Damn... I knew I was missing a step. LOL
I understand what you were doing, and it's great. I mean, that's the whole idea of these forums.
But just because it's a common problem, it may not be his problem. My V12's never had this "common" problem. See where I'm going with this?
I understand what you were doing, and it's great. I mean, that's the whole idea of these forums.
But just because it's a common problem, it may not be his problem. My V12's never had this "common" problem. See where I'm going with this?
06-07-2010, 12:59 PM
#17
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Introduce myself first? Damn... I knew I was missing a step. LOL
I understand what you were doing, and it's great. I mean, that's the whole idea of these forums.
But just because it's a common problem, it may not be his problem. My V12's never had this "common" problem. See where I'm going with this?
I understand what you were doing, and it's great. I mean, that's the whole idea of these forums.
But just because it's a common problem, it may not be his problem. My V12's never had this "common" problem. See where I'm going with this?
Sometimes, the common/easy issues are the answers to harder problems
I don't remember stating that the CPS is the cure for what ails you
I was simply stating that it fixed mine.
Good luck
06-09-2010, 09:02 PM
#18
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Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Well, after experiencing it a few more times I took it to the stealer.
Turns out that this issue is VERY common with ALL V-12 MB's
The cure, New CP sensors. It is a common fix for the V-12 that the dealers ALL know about.
#1 symptom, HARD starting after the the CP sensor gets hot, aka let it sit for an hour or so.
It has NOTHING to do with ANY tune.
PS: The car now starts ANY time, and at ANY temp.
CHECK your crank position sensors now guys
Turns out that this issue is VERY common with ALL V-12 MB's
The cure, New CP sensors. It is a common fix for the V-12 that the dealers ALL know about.
#1 symptom, HARD starting after the the CP sensor gets hot, aka let it sit for an hour or so.
It has NOTHING to do with ANY tune.
PS: The car now starts ANY time, and at ANY temp.
CHECK your crank position sensors now guys
