E63 Hesitation
#101
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E63,,,not any more,,,BMW X5 50i
I understand on what you are saying, however, there has to be something that will cause this to happen. Back in the carb days...if the engine hesitates, it was either timing, or the carb.....why can't it be those today. IMHO I really think it boils down to emmissions....can't advance the timing too much or add fuel to compensate for the lag.....we are getting the engine flashed, and the transmission flashed which is no more than playing with the fuel A/R and timing....and the other strange thing is that I don't get the hesitation in any gear except 1st and MAYBE second if I am turning the corner and give it a little gas...off idle is where it is happening....damn I wish someone was smart enough with instruments to figure this out.......!!!!
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old daily driver '07 E63(gone); new dd '14 750xi; 2013 Viper GTS
I understand on what you are saying, however, there has to be something that will cause this to happen. Back in the carb days...if the engine hesitates, it was either timing, or the carb.....why can't it be those today. IMHO I really think it boils down to emmissions....can't advance the timing too much or add fuel to compensate for the lag.....we are getting the engine flashed, and the transmission flashed which is no more than playing with the fuel A/R and timing....and the other strange thing is that I don't get the hesitation in any gear except 1st and MAYBE second if I am turning the corner and give it a little gas...off idle is where it is happening....damn I wish someone was smart enough with instruments to figure this out.......!!!!
#103
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It definately is only off idle in first for me, never happens if I hit d/s then downshift to 1st with the stick shift.. Try it , car leaps out everytime unless you accelerate wildly , brake then depress wildly again...My car shift at 6800-7k everytime when WOT and 2nd gear is great , 3rd and 4th ...1st gear is what needs training and the most aggresive pedaling
#104
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E63,,,not any more,,,BMW X5 50i
It definately is only off idle in first for me, never happens if I hit d/s then downshift to 1st with the stick shift.. Try it , car leaps out everytime unless you accelerate wildly , brake then depress wildly again...My car shift at 6800-7k everytime when WOT and 2nd gear is great , 3rd and 4th ...1st gear is what needs training and the most aggresive pedaling
#106
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E63 P30, CL500 Sport
This is really interesting...... ![Popcorn](https://mbworld.org/forums/images/smilies/popc1.gif)
My hesitation is never from 1st to 2nd and never in sport mode. My car's hesitation happens from 2nd to 3rd only on comfort mode and only if I'm pressing the gas pedal very slowly![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
If different people are getting different hesitation points, this could mean that this "hesitation" is related to ECU adaptation based on each driver's style of driving.
![Popcorn](https://mbworld.org/forums/images/smilies/popc1.gif)
My hesitation is never from 1st to 2nd and never in sport mode. My car's hesitation happens from 2nd to 3rd only on comfort mode and only if I'm pressing the gas pedal very slowly
![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
If different people are getting different hesitation points, this could mean that this "hesitation" is related to ECU adaptation based on each driver's style of driving.
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2016 S550
My hesitation is only in Sport mode, from 1st to 2nd when the car is cold. I do not have any hesitation in Comfort mode when the car is cold and the Sport Mode hesitation reduces significantly once the car is up to temperature.
By the way, my hesitation only began when the transmission was recently re-flashed. Prior to the re-flash, my car always started in 2nd (Sport or Comfort) unless I had been driving aggressively and now starts in 1st when in Sport Mode and 2nd when in Comfort Mode.
Is this some form of protection for the transmission until the car is up to temp?
By the way, my hesitation only began when the transmission was recently re-flashed. Prior to the re-flash, my car always started in 2nd (Sport or Comfort) unless I had been driving aggressively and now starts in 1st when in Sport Mode and 2nd when in Comfort Mode.
Is this some form of protection for the transmission until the car is up to temp?
Last edited by MikeAg; 12-03-2007 at 02:36 PM.
#108
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e63 amg 2007
Hesitation
My car only hesitates from idle to first. Only does so when coming to a quick stop and then immediately accelerating. It does not matter if I am in comfort or sport mode and does not matter if car is hot or cold (although seems to be worse when car is cold).
I refuse to believe that I have to train my car not to do that. If that is the case, how did I train it to do that in the first place? Is being an aggressive driver causing my car to hesitate? That does not make any sense.
As I mentioned in a post several months ago, my problem started when Mercedes gave me my first software upgrade, at around 6,000 miles. They have not been able to fix the problem in the two times I have brought it in since and deny they are responsible for the problem (although they do admit it hesitates and will "keep me updated with any software updates").
I refuse to believe that I have to train my car not to do that. If that is the case, how did I train it to do that in the first place? Is being an aggressive driver causing my car to hesitate? That does not make any sense.
As I mentioned in a post several months ago, my problem started when Mercedes gave me my first software upgrade, at around 6,000 miles. They have not been able to fix the problem in the two times I have brought it in since and deny they are responsible for the problem (although they do admit it hesitates and will "keep me updated with any software updates").
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E63 P30, CL500 Sport
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Good luck......
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#111
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E63,,,not any more,,,BMW X5 50i
My car only hesitates from idle to first. Only does so when coming to a quick stop and then immediately accelerating. It does not matter if I am in comfort or sport mode and does not matter if car is hot or cold (although seems to be worse when car is cold).
I refuse to believe that I have to train my car not to do that. If that is the case, how did I train it to do that in the first place? Is being an aggressive driver causing my car to hesitate? That does not make any sense.
As I mentioned in a post several months ago, my problem started when Mercedes gave me my first software upgrade, at around 6,000 miles. They have not been able to fix the problem in the two times I have brought it in since and deny they are responsible for the problem (although they do admit it hesitates and will "keep me updated with any software updates").
I refuse to believe that I have to train my car not to do that. If that is the case, how did I train it to do that in the first place? Is being an aggressive driver causing my car to hesitate? That does not make any sense.
As I mentioned in a post several months ago, my problem started when Mercedes gave me my first software upgrade, at around 6,000 miles. They have not been able to fix the problem in the two times I have brought it in since and deny they are responsible for the problem (although they do admit it hesitates and will "keep me updated with any software updates").
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old daily driver '07 E63(gone); new dd '14 750xi; 2013 Viper GTS
Second...I have never run the car in cold temps. Most of my runs have been over the summer, just a few in cooler temps. Forecast is however calling for very windy and cold conditions. Atco is in southwest NJ. Will find out later today if it is a 100% go.
#113
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GT3
Well, mine still hestitates and now the speed controller has failed. I'm getting the run around on how they don't see the hesitation I'm talking about. I'm also getting tired of their "this is a high performance vehicle" speech. They are completely denying any type of responsibility for this hesitation. Thing that really pisses me off is I never had the hesitation until the new trans went in
And even on trans two now the speed controller failed. Is anyone with CLK 63 BS' having any of these issues we're having?
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#114
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E63,,,not any more,,,BMW X5 50i
Well, mine still hestitates and now the speed controller has failed. I'm getting the run around on how they don't see the hesitation I'm talking about. I'm also getting tired of their "this is a high performance vehicle" speech. They are completely denying any type of responsibility for this hesitation. Thing that really pisses me off is I never had the hesitation until the new trans went in
And even on trans two now the speed controller failed. Is anyone with CLK 63 BS' having any of these issues we're having?
![Frown](https://mbworld.org/forums/images/smilies/frown.gif)
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#115
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I am now being told from the main rep it is a design feature built into the ecu
BS has a whole new meaning here
New speed sensor is in and we'll see how long before the next trans failure. Not sure I want to live with the hestitation
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#116
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E55
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E63,,,not any more,,,BMW X5 50i
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#119
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Yeah, I'm in the process of building a strong case. Only bummer is I love everything about the car other than the hesitation/problems and I have no idea what to replace it with
The other problem with lemon law at this point is they are saying the hesitation isn't considered a problem. They are saying it has to be a hard failure. They are probably just hoping I'll go away, but not gonna happen. I'm confident it will act up again....
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![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
#120
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E63,,,not any more,,,BMW X5 50i
Yeah, I'm in the process of building a strong case. Only bummer is I love everything about the car other than the hesitation/problems and I have no idea what to replace it with
The other problem with lemon law at this point is they are saying the hesitation isn't considered a problem. They are saying it has to be a hard failure. They are probably just hoping I'll go away, but not gonna happen. I'm confident it will act up again....![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
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![nix](https://mbworld.org/forums/images/smilies/nixweiss.gif)
#121
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E-ZGO 53hp., 1999 E 430 sport, 2004 E 55, 2008 Tahoe LTZ on 24"s
"DESIGN FEATURE"
...........I got their design feature........you're right about BS having a whole new meaning.......I never had a trans failure so I can't comment on that...however...I am scheduled to have the MB rep. see and drive the vehicle,,sometime soon,,my guess after the holidays. I can't believe that all E63 are not effected....or maybe we are the lucky ones that MB chose at no cost to have that "design feature"![Roll Eyes (Sarcastic)](https://mbworld.org/forums/images/smilies/rolleyes.gif)
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Design feature
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#122
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Mine hesitates all the time too, by acting up I meant another failure of some sort. My tech spent alot of time on the trans and the car runs very hard and strong now. The hesitation is still the same. They told me to take it to Renntech and have them fix it. I asked them if they were paying and why I should have Renntech fix their mess
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#123
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E63,,,not any more,,,BMW X5 50i
Mine hesitates all the time too, by acting up I meant another failure of some sort. My tech spent alot of time on the trans and the car runs very hard and strong now. The hesitation is still the same. They told me to take it to Renntech and have them fix it. I asked them if they were paying and why I should have Renntech fix their mess![Smilie](https://mbworld.org/forums/images/smilies/smile.gif)
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#124
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Has anyone talked with Renntech to see if they think or have fixed this hesitation problem. My tech also said the software that seems better is 06 of 07. Have no idea what it means, but it sounded good
Maybe Rentech can help and if it's reasonable I would rather fix it then move into another car....
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