trombone

Recently I noticed a new and annoying noise generated by my S430 2002.

It is a very deep sounding vibration coming up when the engine revs over 1500.

No need for the car to run, it is the same when I stop the car, put the gear in N and rev up the engine.

The higher the revolution the more prominent is the vibration.
The seat and the steering wheel slightly picks it up too.

I checked all the pullies, no wobbling, all seem tight.
Opening the hood I'm not getting any hint to the source, actually I hardly hear it.

Exhaust is not thundering, looks and sounds flawless.

Maybe some of you have a clue where to look at. I have been searching the forum quite a while, found nothing related.

Thanks for any input.

DNA47

mount?

trombone

Thanks for the tip.
I have an appointment to lift the car so I can check all the mounts.
In a few days we will know.

gorbys

Check your engine and transmission mounts

DRTYLNDY

I would also check the harmonic balancer. If my memory serves my right there was a recall years ago on my S500 balancer. Good luck.
Johan

trombone

Here is the result: all three mounts had to be changed.

Thanks for the good advice.
Everything under the belt was checked including the harmonic balancer, all OK.

DNA47

Glad you found the cause. How much did you pay?

trombone

This time I gave up the good habit of DIY and let the dealer's service do it :$1,350.00.
I needed the fix fast, it requires lift, and my mechanic could not squize me in before next week. If I waited for him I could probably save about 3- 4 hundreds with cheaper parts from AutohausAZ, but my guy estimated 9-10 hours labor, the dealership did and charged 7 hours.

E.A.

Feels like a new car all over again huh. Its one of those times you really get a "seat of the pants" feel for where your money went, when you replace the engine and trans mounts in these cars. (or any benz for that matter)

EA

joeobowyer

I have an appointment to lift the car so I can check all the mounts.