1500 RPM Jerk
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Joined: Feb 2008
Posts: 80
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E55 AMG, C32 AMG
1500 RPM Jerk
I know this topic has been discussed umpteen times, but my car (2002 C32 w/ warranty) never jerked before. Couple of months back, the jerk started and was very mild. I let it go for 2 months hoping that it was probably some adaptation issue and would fix by itself.
Since it never got any better, I took it to the dealer, and they found glycol contamination. They replaced the radiator and flushed the transmission. In a week, the jerk was back again. This time the dealer replaced the torque converter and while at it they replaced the rear main seal since that was leaking as well.
My question is that whether I should be more fussy and try to get them to replace the transmission as well? My advisor says that with the updated TSB, only the torque converter needs replacement. I remember seeing the contamination value but don't remember on the top, but it was relatively low and was just above the threshold. Do you think that would have already affected my transmission?
BTW I have driven it for a couple of days after the new converter, and there is no jerk whatsoever, but I guess I have to give it some time. Any thoughts will be appreciated.
Since it never got any better, I took it to the dealer, and they found glycol contamination. They replaced the radiator and flushed the transmission. In a week, the jerk was back again. This time the dealer replaced the torque converter and while at it they replaced the rear main seal since that was leaking as well.
My question is that whether I should be more fussy and try to get them to replace the transmission as well? My advisor says that with the updated TSB, only the torque converter needs replacement. I remember seeing the contamination value but don't remember on the top, but it was relatively low and was just above the threshold. Do you think that would have already affected my transmission?
BTW I have driven it for a couple of days after the new converter, and there is no jerk whatsoever, but I guess I have to give it some time. Any thoughts will be appreciated.
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Joined: Jul 2006
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From: Maine
Not an AMG :(
I know this topic has been discussed umpteen times, but my car (2002 C32 w/ warranty) never jerked before. Couple of months back, the jerk started and was very mild. I let it go for 2 months hoping that it was probably some adaptation issue and would fix by itself.
Since it never got any better, I took it to the dealer, and they found glycol contamination. They replaced the radiator and flushed the transmission. In a week, the jerk was back again. This time the dealer replaced the torque converter and while at it they replaced the rear main seal since that was leaking as well.
My question is that whether I should be more fussy and try to get them to replace the transmission as well? My advisor says that with the updated TSB, only the torque converter needs replacement. I remember seeing the contamination value but don't remember on the top, but it was relatively low and was just above the threshold. Do you think that would have already affected my transmission?
BTW I have driven it for a couple of days after the new converter, and there is no jerk whatsoever, but I guess I have to give it some time. Any thoughts will be appreciated.
Since it never got any better, I took it to the dealer, and they found glycol contamination. They replaced the radiator and flushed the transmission. In a week, the jerk was back again. This time the dealer replaced the torque converter and while at it they replaced the rear main seal since that was leaking as well.
My question is that whether I should be more fussy and try to get them to replace the transmission as well? My advisor says that with the updated TSB, only the torque converter needs replacement. I remember seeing the contamination value but don't remember on the top, but it was relatively low and was just above the threshold. Do you think that would have already affected my transmission?
BTW I have driven it for a couple of days after the new converter, and there is no jerk whatsoever, but I guess I have to give it some time. Any thoughts will be appreciated.
By all means, if you think you can get a new tranny out of the dealership / warranty, go for it. I highly doubt that's going to happen though (especially given the content of the TSB).
Seeing that locking up of the torque converter appears to be the culprit in many of the 'jerk' cases, you may get lucky. Perhaps the jerk is permanently gone now.
That said, a lot of C32 owners just live with it - seems like your jerk isn't too severe.
It's difficult to say whether the glycol contamination has already affected your transmission - too many variables in play. Sending the transmission fluid off frequently for analyses will give you a better idea.
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
i think there also a tranmission software update back in 03/04. See if updating to the newest firmware might help. also make sure your car is in S mode. The jerk for me only comes when its in W mode.
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N/A
Took my 02 C32 to the dealer today for the tranny jerk issue. They said they are going to test for glycol contamination in the tranny fluid. We'll see what happens. I experience a mild tranny jerk and it is intermittent at 1500 rpms. I'll advise of their diagnosis.
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Heard from the dealer and no glycol in the tranny fluid. Good news, I guess, and they are still diagnosing the source of the jerk. Any ideas as to why i experience the jerk when there is no glycol issue? I 'm just trying to get ideas so i can prepare a response when they say nothing else is wrong. Anything else I should get them to check?
Thanks.
Thanks.
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04' C32 AMG & 90' TT 300ZX
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03 g35 coupe...........02 c32 Sold
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Got the final synopsis from the dealer re: my tranny jerk and they are going to replace the torque converter. 2200 dollars and I am finally thankful that I bought the aftermarker extended warranty. I pay 100 deductible and they cover everything else including a rental for 5 days.
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From: Ashburn, VA
2004 C32, 2006 Honda CBR1000RR, 2007 Harley NightRod, 2013 Harley Road Glide Custom
Got the final synopsis from the dealer re: my tranny jerk and they are going to replace the torque converter. 2200 dollars and I am finally thankful that I bought the aftermarker extended warranty. I pay 100 deductible and they cover everything else including a rental for 5 days.
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Joined: Dec 2008
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From: MD
2007 C230 and 1985 Monte SS
Is this jerk you guys talk about like a bit of deceleration on the 2-3 shift? Mine jerks a little bit like that, enought to make it uncomfortable when the engine is coldish.
I told the dealer about it (mine's an '07 C230) and they said that they couldnt get it to do it, even though I left it there overnight. I'm thinking that I'm going to have to take off of work to go there one morning and take them for a ride after leaving it there overnight...
I told the dealer about it (mine's an '07 C230) and they said that they couldnt get it to do it, even though I left it there overnight. I'm thinking that I'm going to have to take off of work to go there one morning and take them for a ride after leaving it there overnight...
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The jerk is gone. I will advise if it comes back. I have read that some of the others who have had tranny/torque converter replaced experienced no jerk initially but it came back. Mine hasn't yet so we'll see. I have also noticed a much smoother shift throughout the range in all gears. So, i'm happy for now.
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From: Philadelphia, PA
2005 Silver E55
I'll bet that everyone that experiences the "Jerk" issue is using crappy cheap gas. Am I right? Think really hard about where you filled up last. Here is an experiment for all of you. Next time you need to fill up, go to an Exxon or a Shell station. Buy a bottle of Fuel Injector cleaner and poor it into your tank before you fill up with 93 Octane. I bet you that your "Jerk" will be completely gone while you run through that tank of gas. Then go to the cheapest guy in town, and fill up with 93 Octane, and I bet the "Jerk" resurfaces... I was able to completely eliminate the Jerk by using high quality gasoline only in my 2002 C32 with 78k miles on the odometer. 
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2002 C32 ///AMG
I concur. My dealer 'worked with me' (they didn't have to really do any of this since the contamination level came back negative - props to them) and swapped out the radiator, torque converter and flushed the transmission. I ended up with a new TCU from the motherland with the latest firmware loaded at the dealership. Problem has not come back and this was 18 month ago, maybe longer. I was pretty skeptical that all the above would solve the issue especially after reading all the come back occurences folks have had on the forum.
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05 CLK55
I'll bet that everyone that experiences the "Jerk" issue is using crappy cheap gas. Am I right? Think really hard about where you filled up last. Here is an experiment for all of you. Next time you need to fill up, go to an Exxon or a Shell station. Buy a bottle of Fuel Injector cleaner and poor it into your tank before you fill up with 93 Octane. I bet you that your "Jerk" will be completely gone while you run through that tank of gas. Then go to the cheapest guy in town, and fill up with 93 Octane, and I bet the "Jerk" resurfaces... I was able to completely eliminate the Jerk by using high quality gasoline only in my 2002 C32 with 78k miles on the odometer.
So even 93 octane isn't good enough for our motor? What type of gasoline are you using on your C32 now? Thanks!
Has anyone tried using Fuel Injector Cleaner before? I am really new to this stuff, but I will look it up on the internet. Can anyone else with experience tell me how this thing works mechanically? Thanks!
Super Member
Joined: Mar 2007
Posts: 594
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From: Miami, FL
1991 Toyota MR2, 2002 C32 AMG
Just to bring this up as an alternative, I switched my transmission fluid to one that Neihouma recommended and the jerk is completely gone. Here is the link to the fluid I used: http://www.redlineoil.com/products_g...8&categoryID=8
I hope this helps.
I hope this helps.
Super Member
Joined: Dec 2008
Posts: 526
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From: MD
2007 C230 and 1985 Monte SS
I'll bet that everyone that experiences the "Jerk" issue is using crappy cheap gas. Am I right? Think really hard about where you filled up last. Here is an experiment for all of you. Next time you need to fill up, go to an Exxon or a Shell station. Buy a bottle of Fuel Injector cleaner and poor it into your tank before you fill up with 93 Octane. I bet you that your "Jerk" will be completely gone while you run through that tank of gas. Then go to the cheapest guy in town, and fill up with 93 Octane, and I bet the "Jerk" resurfaces... I was able to completely eliminate the Jerk by using high quality gasoline only in my 2002 C32 with 78k miles on the odometer.
But regardles... the jerk would be on all shifts if it were gasoline related, would it not? i.e. not just the 2-3.
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Joined: Aug 2007
Posts: 93
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From: Philadelphia, PA
2005 Silver E55
ptirado961,
So even 93 octane isn't good enough for our motor? What type of gasoline are you using on your C32 now? Thanks!
Has anyone tried using Fuel Injector Cleaner before? I am really new to this stuff, but I will look it up on the internet. Can anyone else with experience tell me how this thing works mechanically? Thanks!
So even 93 octane isn't good enough for our motor? What type of gasoline are you using on your C32 now? Thanks!
Has anyone tried using Fuel Injector Cleaner before? I am really new to this stuff, but I will look it up on the internet. Can anyone else with experience tell me how this thing works mechanically? Thanks!
