Car shakes, when over 4000RPM in P gear?
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From: LA/OC
E320
Car shakes, when over 4000RPM in P gear?
Hi,
My car shakes when the engine run over 4000RPM in P or N gear.
My service adviser said it is normal to keep the engine run low RPM when the gear is in P/N gear.
What do you think? Does your car do the same?
Thanks in advance for your input!
Ben
My car shakes when the engine run over 4000RPM in P or N gear.
My service adviser said it is normal to keep the engine run low RPM when the gear is in P/N gear.
What do you think? Does your car do the same?
Thanks in advance for your input!
Ben
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From: LA/OC
E320
The engine mount was replaced one month ago.
After it, I can still feel the shake on steer wheel when I wait for the red light.
The SA said the shaking is normal.
Three days ago, I push the gas to run the engine over 4000RPM when the car was in Parking gear, the whole car shakes. It made me feel something wrong. Then, the SA said MB has designed like it. If the engine run over 4000RPM, the gas will be cut, which cause the shake.
Ben
Last edited by Ben'z; Apr 28, 2007 at 11:36 AM. Reason: add more info
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From: HK (but constantly travelling)
98 W210 Advantgarde
Hmmm, maybe its something else then.... The thing is, how can he tell you its normal when the shakes didn't exist before? I'd suggest getting a second opinon or do a computer diagnostic for peace of mind.
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From: LA/OC
E320
That's why I didn't know what would happen before.
How about yours?
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MBWorld Fanatic!
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From: HK (but constantly travelling)
98 W210 Advantgarde
Oh wait, sorry, my bad - I missed the P part! Yes, the fuel cut-off kicks in after 4000rpm causing the car to "choke", it is normal for most, if not all Benz's...sorry for the confusion hee, hee....
Last edited by Whitey; Apr 28, 2007 at 11:44 AM.
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ML
BTW, why in the world did you rev up that high with no load. It's a pretty scary noise!!!!!
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From: West Virginia
2001 E320 RWD - Brilliant Silver/Ash: 100,000+
I fail to see any reason to rev your car to 4000 RPM in either Park or Neutral. Maybe it is good that you did, just to see what it would do. Under certain circumstances, the conditions that you described might indicate an underlying problem, but otherwise, why did you even do it?
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From: West Virginia
2001 E320 RWD - Brilliant Silver/Ash: 100,000+
Don't do that
Junior Member
Joined: May 2005
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From: Torrance, CA
W211 E55 AMG
shakes? of course it shakes, it's telling you that the beast wants to come out and play 
i rev it only twice over 4000 RPM on Park.. it was fun, but i doubt you're suppose to drive hard in a benz. unless it's an AMG
i rev it only twice over 4000 RPM on Park.. it was fun, but i doubt you're suppose to drive hard in a benz. unless it's an AMG
Member
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From: Los Angeles, CA
G63 W463
the cut off is normal, but if u want to rev past 4000 drive the car above 10 mph and put the gear from D to N and slowy push down, u can now rev beyond 4000 rpms. Its fun to it it once in a while, but dont get used to it. Be careful.
, and it just happened and made me scary... thought something wrong with the engine.
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From: the Netherlands
'01 W210 E320 CDI
I noticed you drive a Diesel too. Here in the Netherlands during the mandatory annual road/safety/emmisions test, they FULLY rev up Diesel engines UNLOADED!!! to measure sooth output. There is a lot of debate on this since on some cars the distribution failed thus destroying the entire engine. They should dyno the car and then measure it...
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From: Santa Clarita, CA
1987 E300 TD
I would be scared to redline my RPM gauge in park or neutral.......That sounds crazy though! I want to dyno my car by a professional, and see how he goes about doing it. If he screws it up, it won't be my fault. ha
Newbie
Joined: May 2007
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Achieving 5000-6000 RPMs under Loaded vs. Parked engine is not the same. Over-reving limiter saves your engine (read valves, pistons, rings etc) from harmful exertion forces imposed on the engine when it is reaching that many RPMs in second or two. I thanked MB for making it me proofed
