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Car Forum / Mercedes-Benz Cars / October 2006

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engine viberation

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GG - 23 Oct 2006 04:56 GMT
My 1991 300E 200,000 miles is viberating in drive at idle with brake
set. Smooths out above 1000 rpm. This problem has been worsening for
the past few months.
T.G. Lambach - 23 Oct 2006 05:20 GMT
When was it last tuned up?

How old are the ignition cables?

Has each cable's ohm resistance been checked?

Has any fuel injector cleaner been added to the fuel?
GG - 23 Oct 2006 23:07 GMT
> When was it last tuned up?
>
[quoted text clipped - 3 lines]
>
> Has any fuel injector cleaner been added to the fuel?

The ignition wires are original.
I keep it tuned up and serviced by the book, and us injector cleaner
every month.
How much resistance should my meter read when i test the wires?

Thanks for your help
Guenter Scholz - 24 Oct 2006 14:54 GMT
the wires should read a fraction of an ohm resistance... it's just copper
wire.

cheers, guenter

>> When was it last tuned up?
>>
[quoted text clipped - 10 lines]
>
>Thanks for your help
me - 23 Oct 2006 12:40 GMT
> My 1991 300E 200,000 miles is viberating in drive at idle with brake
> set. Smooths out above 1000 rpm. This problem has been worsening for
> the past few months.

Check your engine mounts.
Tiger - 23 Oct 2006 15:59 GMT
I agree on engine mounts.
GG - 23 Oct 2006 23:09 GMT
> I agree on engine mounts.

How can I determine if the mounts are defective?

Thanx for the help
Tiger - 24 Oct 2006 00:35 GMT
They measure by the amount of sag or compression. If it never been changed
before, it is pretty much bad.
 
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