vsix

Heres the problem:

My car is idling like it has little misfires....it just feels like that.
The clk is shaking slightly like an old muscle car. Checking the enginebay for leaking motormounts, I found out that my harmonic balancer pulley is wobbling, not that much but all in all very suspicious. Now Im not sure whos the real troublemaker, maybe even the tensioner or just the harmonic balancer.

Car is shaking on idle as its out of balance. No misfires...like mentioned just feels like that.

Had the checkengine light popping up but it was just a cause of the shaking, sparkplug wires came loose.

Please be so kind and help me with the partnumbers and the price for the mentioned.

Allready got an estimate from the dealer for the harmonicbalancer 287,00 Euros without taxes, Im courious whats the price for those parts in the states, or even from another supplier, maybe I could order it from the states and still save money.

CLK 550 coupe 2007

Thanks !

betrezra

Run das star for codes. I suspect mas or motor mounts.

edit..... make sure it's not the pulley wobble VS the HD.
You can often see the rubber coming out of a bad HD if going bad.

vsix

Did star at the dealer and like I said it was just a sparkplugcable that came loose. No codes.

Whats an MAS? Did you ment MAF? Will check tomorrow again for MMs.

Rudeney

My 5.5l V8 engine "lumbers" a bit at idle, too. I had the engine mounts replaced when they did the timing gear repair, and it didn't help much. It seems worse on very hot days when the engine temp climbs up to around 100C, right before the cooling fan kicks into high gear. My harmonic balancer is dead straight. I suspect it's just the result of a large engine in a fairly small chassis.

vsix

See it the same way V8 is a V8, it should lumber a little bit.

As for the HB:

dead straight?

Mine def. wobbles will change that out in a few weeks. Then I will start to slowly swap the coils and sparkplugcables with new ones.

That should be it ....cant be something serious...

Rudeney

Yes, my HB does not wobble one bit. I know back in my W163 days, that was a common failure and the symptom was the wobble. I think there was actually a TSB to replace it an the W112/W113 engines. The rubber would fail and the pulley would just self-destruct, and often take the oil pan with it.

vsix

Rodney those TSBs you mentioned, do they exist for the clk 550, too?

If so, will such an TSB work at a german stealership? ...you remember I still have the unregular starting problem wich is pointing to the fuelpump so any saved money is worth alot to me.

Thanks man!

Rudeney

I don't think so. I believe they fixed the problem back in 2003/2003 with the M112/M113 engines - they were using a rubber compound that deteriorated too quickly. Having sad that, the rubber in all harmonic balancers will eventually deteriorate and fail, but it should last 10+ years.

vsix

Hmm okay...

Now for final clarification would you say that even if the car has been beaten hard by the previous owner 10+ years should be an realistic estimate?

Could it be that JUST the enginemounts are worn out? Visual inspection was okay.

Gonna load up a vid tomorrow, so we all see the same and can better diagnose.

Rudeney

Well, I won't guarantee 10 years, but the defect on the ML's harmonic balancer was causing it to fail very early - in a year or two. A harmonic balancer should last a long time. But, for some reason, the motor mounts on MBZs just don't last long. I think they have pretty much become a maintenance item to be replaced every 3-4 year.

vsix

Have a hard time with I phone, havent got a clue how to implement it over icloud to my ipad...new technology lol

Anyway heres the vid. :-)

You see the wobbling HB? If not Im gonna save the hassle and money replacing it and keep on investigating...motormounts, fuelpump, cp, fuelfilter...

Rudeney

I really don't see much wobble there! Looking at it relative to the other pulleys and the belt, it looks like it's very stable.

vsix

Okay but you do see its shaking, right? Or would you consider that as normal. If so Ill be contacting tomorrow the dealer and wont order the pulley, will just focus on maintenance and new motor mounts!

Rudeney

I'm just not seeing a lot of movement in that video. Looking at it in relation to the pulley right above it, I see just very small amounts of movement. I think that's normal. Remember, the harmonic balancer is mounted in rubber so it can move and absorb engine vibrations.

vsix

Got it!
Thats what I wanted to know :-), feel much better now, will focus on the mentioned and keep you updatet!

W211_350WagoN

Does this look bad? It has a wobble and not sure if it's realated to a vibration at stop lights

Petersamios

Hello everyone, I own a 2005 w211 E55 Amg Mercedes and I have been told that I have to replace my harmonic balancer and I only have 72000 km . I have had the car serviced by only Mercedes dealership and I have had many problems with it. Now after reporting that I have a slight noise in one of my pullies after recently changing all of my pullies that my harmonic balancer needs replacing. I have been quoted something like $4200 for the job and I am not too happy about it. After looking on line I see that it is a common problem and say that my model may not be covered under the recall. But also saw that you can check via your VIN number of your vehicle and that some of my year are still covered according to the vin number. So if someone could please check for me my vin number it would be greatly appreciated and post the answer for me to see the outcome please.
My VIn number is
WDB 211076.2A.840743
Thanks