Hi all,

I am hoping you can help me. My 1997 E320 has a vibration which seems to be coming from the rear of the car between speeds of 35-45 mph. If I speed up as soon as it starts the vibration goes away. My initial thought is drive train. It seems more noticable when there are several people in the car. Does this sound like a U-joint? Or flex disc problem? I can I tell?

Thanks,

__________________
Brandon



2008 S550
1957 Dodge D100
1967 VW Microbus 21 Window
2001 Suburban
2004 Beach cruiser bicycle
-----------------GO DUKE!-----------------

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776

If you down shift into a lower gear manually is the vibration still there?

IF not then possibly the torque converter lock-up is happening at that speed!

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MB,

If I shift it over to 4th it will do it also but I'll have to slow down just a bit. The vibration isn't too bad, in fact if you go from 0-60 It will never happen. It only occurs when driving around 35-40 mph really. If you speed up or let off the accelorator when it occurs the vibration immediately goes away. It's almost like a sweet spot on the accelerator. I checked the pressure in all of the tires yesterday and one of the rear wheels was low about 10pds after filling it up the vibration seems a little less noticable. However I've had many tires out of balance in my day and this just doesn't feel like one...I could be wrong I guess. Any thoughts?

__________________
Brandon



2008 S550
1957 Dodge D100
1967 VW Microbus 21 Window
2001 Suburban
2004 Beach cruiser bicycle
-----------------GO DUKE!-----------------

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776

It seems as if this is occuring mostly at 1500 RPMS no matter what gear. Could this possibly be the center bearing?

__________________
Brandon



2008 S550
1957 Dodge D100
1967 VW Microbus 21 Window
2001 Suburban
2004 Beach cruiser bicycle
-----------------GO DUKE!-----------------

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776

Anybody??

__________________
Brandon



2008 S550
1957 Dodge D100
1967 VW Microbus 21 Window
2001 Suburban
2004 Beach cruiser bicycle
-----------------GO DUKE!-----------------

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776

I had driveshaft-related vibrations. They were rather speed-related than RPM-related. In your latter post you say it happens at 1500RPMs. Is this also true while standing and reving up in neutral? Is the noise rather rattling or humming?
Motor mounts, transmission mounts, cat heatshield, cat inside, differential mounts may be other components to be checked besides the ones that have been mentioned already.
Good luck, Bruno