15-20 MPH Vibration on Acceleration

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9kman - 16 Jun 2005 21:49 GMT

1987 300E. On acceleration there is a vibration between 15 and 20 mph
which feels like going over rumble strips. Light and hard acceleration
produce the same symptom. The vibration seems to get worse as the car
gets driven longer. For instance, when cold, the problem is really not
noticeable. After 45 minutes of driving it is very noticeable. Except
for this vibration, the car accelerates beautifully.

I have recently replaced all of the rear control arms, all 4 coil
springs, a ball joint, a tie-rod end, the steering idler arm bushings
and all 4 tires. I also had a recent alignment. The car runs straight
and smooth as fast as I care to go.

Based on the symptom getting worse as the car is driven longer, my
thought is that this is a rubber part failing. I would appreciate any
thoughts of where to start looking and how to identify whether or not
the various parts are failing.

Thanks,

Robert

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Stratman - 16 Jun 2005 21:53 GMT

> 1987 300E. On acceleration there is a vibration between 15 and 20 mph
> which feels like going over rumble strips. Light and hard acceleration
[quoted text clipped - 16 lines]
>
> Robert

Prop shaft rubber doughnuts?

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T.G. Lambach - 17 Jun 2005 00:00 GMT

I'd start the search at the drive shaft's flex joints, then the motor
mounts and last the rear axles' spider (CV) joints. The axles can be had
rebuilt if that's the cause.

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mogaka - 20 Jun 2005 20:59 GMT

hey change the overvoltage relay located at the back of the battery. Its
has a red plastic on top. I had the same problem

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loose cannon - 21 Jun 2005 16:37 GMT

> 1987 300E.

There's your problem. Dig into those deep pockets and get a new car
instead of fixing the old piece of sh.t over and over.

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Loose Cannon - 22 Jun 2005 20:25 GMT

Insane MPD bigot and irony-impaired coward "IBenGetiner"
<Lappcatt@AOL.com> AKA "JYoung" <youngopinions@aol.com> currently

> There's your problem. Dig into those deep pockets and get a new car
> instead of fixing the old piece of sh.t over and over.

Shall we add 'Mercedes envy' to your laundry list of untreated pathologies,
sockpuppet boy?:

"I have a 1985 Honda Accord. It seems to be using small amounts of
radiator fluid and I can't find out why. It did overheat a few months
ago, but not all the way. No water is in the oil or anything. It uses
about a cup a week. If it were a cracked head gasket, wouldn't it be
getting worse by now? Wouldn't it be performing poorly? It seems to
run great. Any help would be greatly appreciated..."
From: Lappcatt@aol.com (IBen Getiner), forger and AOLoser.
Newsgroups: alt.autos.honda
Subject: Accord using fluid
Date: 16 Feb 2005 20:34:01 -0800
Message-ID: <396a5984.0502162034.3ba1fe40@posting.google.com>
NNTP-Posting-Host: 64.12.116.132

Too funny.
Speaking of the "old piece of..." <BFG>

In any event, why not pick a nick a stick with it, troll (Oh, those telltale
NNTP's)?:

From: "loose cannon" <looseaint@aol.com>
Newsgroups: alt.auto.mercedes
Subject: Re: 15-20 MPH Vibration on Acceleration
Date: 21 Jun 2005 08:37:43 -0700
Message-ID: <1119368263.462790.62910@g49g2000cwa.googlegroups.com>
NNTP-Posting-Host: 64.12.116.11

From: "IBen Getiner" <Lappcatt@AOL.com>
Newsgroups: rec.music.beatles
Subject: Re: One of the first heavy metal songs
Date: 29 Apr 2005 02:36:12 -0700
Message-ID: <1114767372.699445.248970@g14g2000cwa.googlegroups.com>
NNTP-Posting-Host: 64.12.116.11
From: "J Young" <youngopinions@aol.com>
Newsgroups:
seattle.politics,tx.politics,soc.culture.jewish,talk.abortion,ca.politics
Subject: Saying "No" to affirmative action
Date: 11 Jan 2005 22:11:32 -0800
Message-ID: <1105510292.017272.67700@f14g2000cwb.googlegroups.com>
NNTP-Posting-Host: 64.12.116.11
From: fattuchus@yahoo.com
Newsgroups: rec.music.beatles
Subject: Re: Was John a Bi-sexual?
Date: 20 Mar 2005 09:28:36 -0800
Message-ID: <1111339716.114166.91820@g14g2000cwa.googlegroups.com>
NNTP-Posting-Host: 64.12.116.11

LC~ Imitation is...

"I own a paintball gun and frequently participate in war games and I KNOW.
You don't, so SHUT IT!"
From: Lappcatt@aol.com (IBen Getiner), bringing the intellectual equivalent
of a paintball gun to his skirmishes.
Message-ID: 396a5984.0404171111.273046ae@posting.google.com
NNTP-Posting-Host: 64.12.116.134

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