need help please tranny issue
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MBWorld Fanatic!
Joined: Jan 2010
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From: MICHIGAN
2001 E55 - 2008 CLS63 -2016 F-150
need help please tranny issue
I have yet to take into service being the weekend . As I gave it gas from the start I hear a boom and the car just coasted into neutral . When I came to a stop won't go in reverse or drive and when I went to put into park it made a grinding noise from reverse to park . So is my tranny toasted or could it be something else ?? Any help would be greatly appreciated !!!
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I have yet to take into service being the weekend . As I gave it gas from the start I hear a boom and the car just coasted into neutral . When I came to a stop won't go in reverse or drive and when I went to put into park it made a grinding noise from reverse to park . So is my tranny toasted or could it be something else ?? Any help would be greatly appreciated !!!
I am no expert here, but the "boom" you mentioned and it going to neutral is not a good sign. The grinding alludes to a faulty transmission too. Has it been serviced recently? Or has it ever been serviced? How many miles on it? The 722.6 is a very robust transmission, but all must be maintained. It's unfortunate that many neglect to change the fluid, I am not insinuating this is the case on yours. This is partly due to Mercedes claiming their fluid was lifetime a while back so people took their word.
Best of luck, I wish that I could offer up more insight.
Last edited by RPB; Jun 15, 2014 at 01:22 PM.
Thread Starter
MBWorld Fanatic!
Joined: Jan 2010
Posts: 1,073
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From: MICHIGAN
2001 E55 - 2008 CLS63 -2016 F-150
I agree, it is a shame that people in this particular section of the forum rarely respond or care to assist.
I am no expert here, but the "boom" you mentioned and it going to neutral is not a good sign. The grinding alludes to a faulty transmission too. Has it been serviced recently? Or has it ever been serviced? How many miles on it? The 722.6 is a very robust transmission, but all must be maintained. It's unfortunate that many neglect to change the fluid, I am not insinuating this is the case on yours. This is partly due to Mercedes claiming their fluid was lifetime a while back so people took their word.
Best of luck, I wish that I could offer up more insight.
I am no expert here, but the "boom" you mentioned and it going to neutral is not a good sign. The grinding alludes to a faulty transmission too. Has it been serviced recently? Or has it ever been serviced? How many miles on it? The 722.6 is a very robust transmission, but all must be maintained. It's unfortunate that many neglect to change the fluid, I am not insinuating this is the case on yours. This is partly due to Mercedes claiming their fluid was lifetime a while back so people took their word.
Best of luck, I wish that I could offer up more insight.
Thanks a lot man
I'm hoping it isn't a complete tranny swap but from the sound it made that's all I can think of as something blew up in there lol
Been long weekend with inlaws and a wedding so I had to let my car sit since Saturday night. Dropped it off yesterday to a Indi mechanic. He's pretty good with euro cars so I'm hoping hell be able to give me some good news .
As far as tranny service . Never been done since I owned it last 4 yrs 70k miles later
Car has high mileage and between the agressive driving basically I drive it like a grandma most time then comes the occasions where,somone wants to play but very rare . I guess it was due for something since I have barely any $$$ into it as far as repairing or having to spend a nice chunk so far
Well see later today
Last edited by MBFLO; Jun 17, 2014 at 08:27 AM.
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Joined: Sep 2007
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Thanks a lot man
I'm hoping it isn't a complete tranny swap but from the sound it made that's all I can think of as something blew up in there lol
Been long weekend with inlaws and a wedding so I had to let my car sit since Saturday night. Dropped it off yesterday to a Indi mechanic. He's pretty good with euro cars so I'm hoping hell be able to give me some good news .
As far as tranny service . Never been done since I owned it last 4 yrs 70k miles later
Car has high mileage and between the agressive driving basically I drive it like a grandma most time then comes the occasions where,somone wants to play but very rare . I guess it was due for something since I have barely any $$$ into it as far as repairing or having to spend a nice chunk so far
Well see later today
I'm hoping it isn't a complete tranny swap but from the sound it made that's all I can think of as something blew up in there lol
Been long weekend with inlaws and a wedding so I had to let my car sit since Saturday night. Dropped it off yesterday to a Indi mechanic. He's pretty good with euro cars so I'm hoping hell be able to give me some good news .
As far as tranny service . Never been done since I owned it last 4 yrs 70k miles later
Car has high mileage and between the agressive driving basically I drive it like a grandma most time then comes the occasions where,somone wants to play but very rare . I guess it was due for something since I have barely any $$$ into it as far as repairing or having to spend a nice chunk so far
Well see later today
Senior Member
Joined: Apr 2010
Posts: 478
Likes: 13
From: Chicago
2008 E63 AMG, 2018 VW Golf R
I have yet to take into service being the weekend . As I gave it gas from the start I hear a boom and the car just coasted into neutral . When I came to a stop won't go in reverse or drive and when I went to put into park it made a grinding noise from reverse to park . So is my tranny toasted or could it be something else ?? Any help would be greatly appreciated !!!
Member
Joined: Feb 2009
Posts: 94
Likes: 19
From: DC
2001 E55 AMG, 2009 C63 AMG
Did your car throw any codes ??
My trans blew up last fall when coolant got sucked into it because of a faulty radiator. So I feel your pain.
Not flushing in 70k is certainly not great for your trans, especially if the original fluid was still in there and you have even higher mileage. However it's generally not catastrophic.
Usually on the 722.6, the speed sensors go and you get erratic shifting and codes.
My trans blew up last fall when coolant got sucked into it because of a faulty radiator. So I feel your pain.
Not flushing in 70k is certainly not great for your trans, especially if the original fluid was still in there and you have even higher mileage. However it's generally not catastrophic.
Usually on the 722.6, the speed sensors go and you get erratic shifting and codes.
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Newbie
Joined: Jun 2014
Posts: 5
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2002 E55 AMG
It sounds like the center of your trans. has shrapneled. In the center the input and output shaft join together in a coupler with a bushing or bearing depending on your build date. It is a common failure and I know of a few reputable remanufacturing shops in my area of California, doesn't help you much in Detroit. Would say you should try to find a re-builder in your area that offers at least a 3 year warranty and replace the trans. Unless you know someone that is capable?
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