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#1
10-17-2011, 07:04 PM
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Vibration 40 mph in a 280 SE 108 Body 6 cylinder
Can feel a vibration about 40 mph, wheels balanced, driveshaft has been rebuilt (thought that was it, u joints were notchy and carrier bearing was shot) any ideas? Not there before 40, can feel it throughout the car.
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#2
10-17-2011, 07:34 PM
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I know you did it, but 90% of vibrations are wheels and/or tires. Check again? Inside tread separation?
__________________
- Brian 1989 500SEL Euro 1966 250SE Cabriolet 1958 BMW Isetta 600
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#3
10-17-2011, 09:54 PM
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Replace that bad carrier bearing and see what happens.
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress.
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#4
10-17-2011, 11:28 PM
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First and foremost: How's your flex disc?
Bad engine and/or trans mount? Bad bearing in the axle or hubs? Put it on a lift, check all 4 wheels for play & operational smoothness. Check to see if the engine mounts are shot or not. I assume you replaced the bad carrier bearing, but your post isn't clear - just says it was bad. Do that if you haven't!
__________________
Current: 2021 Charger Scat Pack Widebody "Sinabee" 2018 Durango R/T Previous: 1972 280SE 4.5 2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi" 1999 Chrysler 300M - RIP @ 221k
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#5
10-17-2011, 11:48 PM
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driveshaft was sent out has new u joints, carrier bearing, and flex disc.
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#6
10-17-2011, 11:59 PM
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Oh, I see, the carrier bearing was shot. There's an off chance that the driveshaft shop put it together out of phase and/or got the balance wrong. Another possibility is that the tires are balanced, but are out of round, or have a road force imbalance.
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress.
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#7
10-18-2011, 12:11 AM
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same vibration that was there BEFORE I sent the driveshaft out to be rebuilt
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#8
10-18-2011, 01:18 AM
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If the vibration is more apparent while under acceleration, then itīs probably somewhere in the drive train. It itīs a tire problem, the vibration will be the same with or without acceleration.
__________________
 Don't Chrome them; polish them
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#9
10-18-2011, 11:21 AM
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Check and/or just replace subframe mounts and motor mounts, and transmission mount and rear axle mount (inside trunk).
These are all critical I have found. All or none. and everything the others have suggested, too
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