Transmission question
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Joined: Apr 2006
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From: Houston, Texas
Dora the Explorer
Transmission question
I have a 1993 300E 2.8 and whenever I brake harder than just a gradual stop, the trans seems to thud into gear. If I hit the brakes and then give it gas again before the thud happens, it's like the trans isn't in gear and the car shakes and makes all of this horrible noise before finally shifting into gear (with a loud thud) and accelerating. I don't know if this is a trans or diff problem, but the thud and the other noises associated with this all come from the rear end of the car.
The trans has no other difficulties. Other than this, it shifts smooth and wonderful.
Any thoughts?
The trans has no other difficulties. Other than this, it shifts smooth and wonderful.
Any thoughts?
Last edited by mgw_300e; Sep 8, 2006 at 05:05 PM.
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
Posts: 3,062
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From: Houston, Texas
Dora the Explorer
MBWorld Fanatic!
Joined: Jul 2005
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From: Boston
is a German Tank
I have a 1993 300E 2.8 and whenever I brake harder than just a gradual stop, the trans seems to thud into gear. If I hit the brakes and then give it gas again before the thud happens, it's like the trans isn't in gear and the car shakes and makes all of this horrible noise before finally shifting into gear (with a loud thud) and accelerating. I don't know if this is a trans or diff problem, but the thud and the other noises associated with this all come from the rear end of the car.
The trans has no other difficulties. Other than this, it shifts smooth and wonderful.
Any thoughts?
The trans has no other difficulties. Other than this, it shifts smooth and wonderful.
Any thoughts?
I would STRONGLY advise to all of you not to downshift too much until you get either of them fixed (there are 2, one front one rear)...keep the foot on the gas pedal and let the tranny do it's thing without much kickdown, this will prolong the life of the disks.
These things can become VERY dangerous if not taken care of...
Thread Starter
MBWorld Fanatic!
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From: Houston, Texas
Dora the Explorer
I did a search on this, but it would only seem to explain the thud, not the problem where it seems like it's not in gear all the way. Do you think it could be the flex discs + something else?
Yes, apparantly the front flex disc sits just below the airbag ECU and if it flies apart it can hit it and set off your airbags (time for a new dash board)
Yes, apparantly the front flex disc sits just below the airbag ECU and if it flies apart it can hit it and set off your airbags (time for a new dash board)
MBWorld Fanatic!
Joined: Jul 2005
Posts: 3,094
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From: Boston
is a German Tank
I did a search on this, but it would only seem to explain the thud, not the problem where it seems like it's not in gear all the way. Do you think it could be the flex discs + something else?
Yes, apparantly the front flex disc sits just below the airbag ECU and if it flies apart it can hit it and set off your airbags (time for a new dash board)
Yes, apparantly the front flex disc sits just below the airbag ECU and if it flies apart it can hit it and set off your airbags (time for a new dash board)
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MBWorld Fanatic!
Joined: Jul 2005
Posts: 3,094
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From: Boston
is a German Tank
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
Posts: 3,062
Likes: 0
From: Houston, Texas
Dora the Explorer
does anyone know what the diff gear ratio is on a 2.8 300E? I saw one on ebay with a 3.07 ratio.
http://cgi.ebay.com/ebaymotors/ws/eB...m=300027037346
I know you can tweak your torque with different final drive ratios, does anyone know a good ratio and what model used it?
http://cgi.ebay.com/ebaymotors/ws/eB...m=300027037346
I know you can tweak your torque with different final drive ratios, does anyone know a good ratio and what model used it?
Last edited by mgw_300e; Sep 11, 2006 at 11:24 PM.
