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#1
03-03-2007, 07:48 PM
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Aging Motor Mounts?
I have a '99 C280 with 201,000 miles and have noticed recently that the motor vibration has become more significant. While not broken, can motor mounts "harden" and in effect, transfer vibration and noise to the chassis and the passenger compartment?
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#2
03-03-2007, 08:07 PM
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Yes.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#4
03-04-2007, 10:07 AM
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Motor mounts typically collapse over time. The rubber "sandwich" tears or collapse, allowing motor vibrations to transmit to the frame. Usually, there are two motor mounts. You may also want to inspect the transmission mount for the same condition.
__________________
1995 S600, 1 of 618 (sold) "Speed is just a question of money...how fast you wanna go?" LONG LIVE THE W140! Visit my Web Page at www.v12uberalles.com
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#5
03-04-2007, 10:09 AM
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#6
03-05-2007, 08:17 AM
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There are two mounts. I dont have any experience on your models car so I cannot say how difficult it will be to get at them. I have always had to use tools that are optimized for hard to get at spaces to get the bolts out. Typically they are not the easiest things to replace.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#7
03-07-2007, 01:38 PM
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BPH - take a look at this thread on mounts:
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#8
03-07-2007, 02:36 PM
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BPH- I replaced the motor mounts on my 90'420 SEL 171,000 just last month and they were as flat as pancakes, after they were replaced the engine rose an inch! Before hand the car would vibrate so much in park I felt like a milkshake! No vibration what so ever now. There are three- two for the engine and one for the transmission.
__________________
"It's normal for these things to empty your wallet and break your heart in the process." 2012 SLK 350 1987 420 SEL
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