503C43 ////AMG

slight vibration only at takeoff? will happen in 1st or 2nd??

AussieC43

Yeah vibrations in 1st and 2nd, but not so noticeable when cruising at 110km/h. Thought initially it may be the supercharger playing up but that was ruled out, jumped on this forum and found this post and the mechanic went through the car and found the transmission mount cracked.

Not guaranteed a fix, hopefully getting it back tomorrow, but its the only thing that was found.

Fingers crossed

503C43 ////AMG

PLEASE POST YOUR RESULTS AS SOON AS YOU GET YOUR CAR BACK!!!!! I pray this is the solution to my problem.

brentwinter

I have a 1989 300CE with 80K miles. I had the same issue with vibration and a thumping noise in the transmission tunnel area under the center console. It was bad when taking off from a stop in both 1st and 2nd gear. After shifting out of 2nd gear it smoothed out and the thumping disappeared. It also had a rattle that appeared to be coming out of the transmission. I had already had the front flex disc replaced and was focusing on the center bearing. As it turns out, a bolt was out of the new front flex disc and it was causing the thumping noise. The rattle was from the bolt that fell out of the flex disc. It had fallen into the cross member causing the rattle. It appeared to be very bad, but I guess I was lucky to only have it be a flex disc bolt. I replaced all the bolts with a new bolt kit.

503C43 ////AMG

I have replaced my center support bearing, checked the u joints and replaced the rear flex disc. I checked the front flex disc and it seemed fine (no cracks) but maybe I should replace it anyways....

503C43 ////AMG

I have been living with this vibration for over 2 years now Against my better judgement I am going to replace the motor and tranny mounts.

I just wanted to confirm there are 2 motor mounts and 1 tranny mount correct?

Should I go with the E55 motor mounts over the C43 mounts? Anyone have experience with this?

importfan21

Yes, those are the correct amount of mounts. I did some research on the E55/C43 mounts and I concluded that the E55 had 3 different kinds of mounts (depending chassis number). Only 1 of those mounts (earliest chassis) will fit the C43 (it's the same exact mount, actually---Lemfoerder brand). The other 2 mounts have slightly angled tops which will not fit the C43.

Dills13

Hi I have a 2000 clk auto with exactly the same problem, I am getting a vibration radiating up through the centre console in 1st and 2nd gear and only ever happens for a short amount of time at the same speed but the vibration can be controlled to a degree with how aggressive I accelerate the slower i pull away the less the vibration if i pull away with some speed it feels like the centre console is going to drop out of the car!!. I also have a strange tinny sounding rattle every time i accelerate when above 40mph or so, almost sounds as if some coins behind climate control are rattling.

I have revved the engine in neutral and have no rattles, vibrations or noises. I have been told every time it could be the flex disc's but after reading your posts im sincerely hoping its not the tranny. Have you had any luck with diagnosis yet? as I am at a loss.

503C43 ////AMG

It sounds like you have the same issue as I do. I do not have any rattling from behind the climate control. I can tell you replacing your flex disc will not solve this problem as I have replaced mine twice and I still have the same issue.

I am at a loss as well, it pretty much has to be the drive line or tranny but due to the symptoms I am leaning towards tranny I am going to replace my motor mounts and tranny mount but I am not banking on this solving the problem.

Maybe someone in the know could chime in here and shed some light on this??

MarcusF or Ausmbtech I am looking in your direction

MarcusF

If it's not motor mounts, the trans mount, the fan clutch or the flex discs, I'm as lost as everyone else.

Dills13

Yeah from other threads in the forum I have seen that others have had this exact problem resolved by the tranny mounts or the flex discs.

I think its certainly related to all of these things but just depends on the heart of each individual problem. I really do hope yours is not a tranny problem also.

My car is booked in with a MB specialist next wednesday and I am hoping they will find the route of the problem. I will post back on here after that if they have solved the problem. Is yours an Auto or Manual. The only reason I ask is how smooth are the changes? Mine in the Auto box are still so very smooth so I am hoping the transmission is fine.

Dills13

Seems like alot of us are having the same problem, Im booked in to see an MB Specialist next week, so once I have had that done if they find the source of the problem I'll post back on here so as to give you guys some idea what it could be.

503C43 ////AMG

I just reviewed the pre purchase inspection I had done and it states "fan clutch has play". How would I be able to tell if the fan clutch was the culprit?

Please do, I have been dealing with this for over 2 years. After reading Marcus' list have them check the fan clutch cause I have checked everything else on that list.

cm60k

Many reasons cause that damn vibration, fan clutch could be one of those many reasons,, i changed everything related of that vibration( Flex disc -

Center bearing - Engine & Tranny mounts - all Rear bushings..etc), vibration still appears,, then i noticed teki teki sound comes from the fan clutch, i saw

some white greasy comes out from the clutch..., i remove the clutch & removed the center pot( which covers the white paste), and put a grease inside

to mixed with the paste, that well makes the clutch to move more tightly, im soo surprised, vibration gone...,, no one have to do this , new fan clutch

well do the trick, but remember; fan clutch is one of the reason, should to check everything around to make sure nothing else could bothering.......

ZAYED,,

503C43 ////AMG

I looked up how to remove the fan clutch in the WIS and it lists 3 tools to use: 113 589 00 01 00, 001 589 72 21 00, and 113 589 00 40 00. I looked them up and they cost about $700 for all 3

Do I need these tools to remove the fan clutch??

DRBC43AMG

Jason, I found this:http://www.benzworld.org/forums/r129...placement.html

cm60k

Yes, soo narrow space in our W202 to use the regular 36mm spanner,, need to use a special MB tool like you mentioned, or customize it,,

http://www.benzworld.org/forums/w210...lutch-diy.html

http://www.samstagsales.com/mercedes.htm#clutch

ZAYED,,

ohlord

C43 autohausaz 63 bucks each. Have you checked and replaced your shifter bushings?The vibration that will shake and annoy you to fits.
And no you don't need 700 bucks worth of tools to remove the fan clutch.
I have the aftermarket tools for sale,also if you check which you have either the 16 or 17mm upper motor mount nut,I have the right tool that makes removal of that nut a piece of cake.
What kind of vibration has been plaguing you for 2 years? When you did your driveshaft did you make sure to mark it and keep it in the same marks when reinstalled after bearing r/r ? thus maintaining factory balance

cm60k

Another good fan clutch repair:

http://www.benzworld.org/forums/w163...ch-repair.html

ZAYED,,

cm60k

W202 fan clutch removal & new replacement, with a little nervous guy:



I think its C230, im not sure.....

ZAYED,,

Dills13

Just to keep you up to date the my CLK was booked in for this Wednesday but has now been pushed back to the 6th June so I will update when I finally get it looked at. Just bought myself a copy of MB EPC/WIS also so looking forward to getting under the car finally to sort it out.

tri-star tech

I would put a transmission mount and motor mounts in it without even thinking about it. I see this all day long at work. Open you hood and power brake the engine while looking through to see the engine. If it moves around a lot your mounts are shot. The transmission mount usually sags and the rubber center rests on the bottom of the mount. It's 2 16mm and 2 13mm bolts that hold it in. Pull it out and look. Most of the time you can see where it was rubbing. If you drive hard it make the mounts wear out extremely fast.

My car needs mounts right now too. I'm going to see if S55 mounts will work.

503C43 ////AMG

Today I did a cold start and immediately rev'd up to 1600 RPM to see if I could feel the vibration. The vibration was there but not as severe but I would attribute that to no load on the engine as I was in park.

So if I am in park and can still feel the vibration this would rule out the transmission and transmission mount, right?

Could it still be the fan clutch?

It really starts to sound more and more like engine mounts...

If the engine mounts were the issue would you only feel it @ low RPM? I have never felt the vibration higher than 2000 RPM and never in any gear higher than 2nd.

whipplem104

It is the transmission mount. Very common. When I get cars in the shop I put them in neutral and rev them up just to check for the up sell. The mount sags as mentioned. You may need engine mounts but if they have not ruptured and leaked the fluid out they are still ok. The trans mount is very easy to replace. Do it first and see if it fixes your problem, which it will. !st time I ever saw this was on a s class about 10 years ago. We all stood around and could not figure out what was going on because the car was in park on the lift and if you raised the rpms to about 17-1800 rpm it would shake the car really bad. S class and C class are the worse about this but they all do it. Harmonics of some kind. The mount is like 60.00.

importfan21

You are correct; it is not (shouldn't be) the trans mount. Doubtful it's the fan clutch. My motor mounts are bad and the whole car shakes/vibrates at idle but when I get on it it goes away.