vmx128

I got service A done recently, and ever since, (I think) I am noticing a slight high frequency vibration from the engine area (during idle) even after the car is warmed up and operating at 200+ F oil temp. I can feel the vibration it in the cabin through the steering wheel and the gas pedal. The vibration almost feels like something is buzzing/grinding somewhere in the drivetrain. There also seems to be a very faint noise at the same frequency that is usually drowned by the loud engine.

I can only feel this virbration during idle. I can also feel a vibration with the same frequency by touching the area under the front fender. Also, when the engine is idling, it is not rock solid stable. It seems to vibrate slightly.

Since I am very very sensitive to these things, I am wondering if this is really something new or my mind has just latched onto it and I can't stop noticing it. I already checked the oil level and it is not been overfilled.

This is driving me crazy , and since I am embarking on a 800 mile round trip to AZ on Friday, I want to make sure there is nothing wrong with the drivetrain. Maybe I am going crazy!

Any suggestions/feedback on this matter would be appreciated! Should I stop by the dealer to have it checked? I emailed the SA and he was somewhat dismissive and said everything is ok unless some warning light comes on.

The car currently has 3900 miles on it.

exdes

check engine oil level..

vmx128

I did. This is what the dipstick looks like. One difference from before the service is that the dealer replaced the oil with 5w-40. I assume the car ships with 0w-40.

Case1906

For your sanity, have it checked out.

jacob502

It is not normal. I think your experiencing with the same problem that I had. I'm %50 sure this is a an idle valve propblem (which the computer wont read until your engine wont start). does your RPM tend to be lowered when this is happening?

Some dealers are not wise enough to identify this.

vmx128

Thanks for the input. The RPM seems to be pretty low when this happens. I think it hovers between 500-600rpm. Can you tell me a bit more about this problem, how serious it is and how you got it fixed? Thanks!

AMGFTW

They put too much oil into the car. Too much oil will definitely cause the vibrations you are talking about. Take it back to them and have them fix it asap.

Also 5w-40 is fine. AMG changed their recommendation for oil from 0w-40 to 0w-40 or 5w-40. Both of my local dealers only carry 5w-40 now. I have been running it in my car with no issues.

GHAZAN

He posted a pic of his dipstick and said its not overfilled, so why still suggest it. Sounds weird but it could be anything without any more descriptions or codes thrown it's hard to say...

BTW idle RPM at 600 is normal after the initial warm-up above 1k it drops to around 5-600 unless it's really move or bouncing, but it doesn't sound like it

jacob502

No problem. I'm pretty sure it is the idle-to-air control valve. Try to take it to the dealer and replace it through warranty (they propabley wont since they cant identify it). It doent cost much in the gulf, I dont know about the US MB dealers, but I replaced mine and it solved the problem.

Another reason, which I doubt in your case, is a weak throttle, which can be identified instantly through a DAS.

Or it could be a problem with the alternator, which can also be identified through an electric diagnosis.

Anyhow, take it to the dealer, and see what they say about it.

P.s., if thier computer doesnt read anything, then just replace the control valve and hopefully the problem will be solved

vmx128

Yeah, it doesn't look like they overfilled it. I just went for a drive and noticed a couple of things:

The engine idles at 217F when it's 64F outside. Does this sound normal? I let the car sit in idle for 5-10 mins.

Also, the vibrations I mentioned above peak when I rev the engine to around 800 RPM and then either go away or is drowned by the loud engine.

vmx128

Thanks a lot for the detailed info. I'll take the car to the dealer tomorrow.

AMGFTW

Listen dickweed there is no need to cop an attitude to look cool on here.

I read his topic from my phone, didn't see the picture since it was not in the original post, and replied with a suggestion based on my previous experience working on cars over the years.

khmergod

Vmx, idling too long at a time is not good for any vehicle. Most recommend not more than 5mins at a time. Good luck fixing the problem.

Mort

I think my car runs oil temperatures of ~ 102*C when idled for a while. I warmed mine up during the winter to keep the engine lubricated and that is the oil temp I saw. 102*C = 215.6*F. So I would say 217*F is a normal operating oil temperature for our cars.

MB-BOB

Check your PMs for your infraction, please

vmx128

Went to the dealer to have the car checked out, and as expected, everything is normal according to them. I was told that the vibrations change as the engine breaks in. He even told me that my engine vibrates less than some other 63's he has seen.

I wish my mind had not latched onto this slight grinding/vibration at around 800rpm. Now I can't help but notice it every time I get in the car!

black-clk500

For real?
Or are you kidding?

SonnyakaPig

I don't understand the infraction. I think this particular issue could easily have been self-moderated.

It was a misunderstanding and an incorrect assumption on AMGFTW's part.

IMO, GHAZAN made a valid point--I thought the same thing. Of course, from AMGFTW's perspective, whether GHAZAN made a good point was moot, because without him having seen the picture, he figured GHAZAN was being abrasive, which he wasn't, IMO.

Mods, please give us some credit. Of course, if these are the rules, then my opinion is moot.

GHAZAN

point was he didn't need to say "d**kweed" but he could've still been abrasive...fine with me

SonnyakaPig

And my point was that you or someone else would have likely said what you said directly above. I agree with your point.

black-clk500

This is the grade school stuff that I referenced in another thread.
Calling someone d,ckweed is not that offensive IMO.

This just reminds me of a teacher stepping in when to little boys have wrds.
C'mon mods we're all grown men here, I think this could have been handled between them, no need to step in.
So touchy here, jeez--time to go drink some boost

AMGFTW

Just remember kiddies its easy to act cool on the internet lol

We are all grown men here. I made a mistake and didn't need some e-warrior looking to boost his online ego by trying to make me look like a fool.

And Ghazan no need to PM me after reporting my post getting me an infraction rubbing it in my face. Just so everyone can see how idiotic you are this is the exact PM I got from him:

Title: sucka

GHAZAN

hahaha god i crack myself up no hard feelings AMGFTL?

Sorry OP, Im out of this one

VCA_AMG

Geez, it's a bit too tense in here. AMGFTW, take a breath man. We are all here to relax...hair-trigger defense mode not required for the interwebz.

mac911

Just so you guys know, the 5w40 Mobil 1 Formula M is less rich in additives than the Mobil 1 0w40. I've ran oil analysis to see this.

The M1 0w40 is what the factory uses for AMGs (regular Mercedes get a Shell believe it or not).

Every Porsche leaves factory with 0w40 Mobil 1 even most race Porsches.

0w40 Mobil 1 goes BEYOND Mercedes requirements because it meets so many major manufacturer specs. The 5w40 Formula M is more tailored to just squeak by the Mercedes specs.

I take in the 0w40 myself. Probably more significant to do so if you take your oil to the full 10,000 a year.