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E34 (1989 - 1995)

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  #1  
Old 09-28-2012, 10:20 AM
WC5150 WC5150 is offline
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Location: Norwalk,CA
 
Join Date: Sep 2012
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Mein Auto: 1995 525i
Question Vibration when accelerating?

It seems when i accelerate from a stop, I get a bad thumping/vibration,that can be felt around the center/rear of the car. After 20-30mph,it goes away,and dives smooth again! Could it be a driveline problem? I dont think its a trans. issue,cuz it shifts fine.No slips at all! Any thoughts?
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  #2  
Old 09-28-2012, 10:40 AM
robertobaggio20 robertobaggio20 is offline
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Sound like your guibo. Have the car jacked up, shut the engine down, and rotate the centre shaft back and forth with your hands. If there is alot of free play, that confirms it.....hm actually that would be the universal joint and not the guibo I believe. Look at the guibo visually. It may be obviously worn and damaged as well.

If your U joints are screwed, please purchase a rebuilt one. A good used one can be purchased from the yard if you know how to inspect it. Replacing the centre shaft is not a simple task so it might not be advisable if cutting corners only means you'll need to do the work once again down the line.
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  #3  
Old 09-28-2012, 02:04 PM
Lapin 229 Lapin 229 is offline
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Location: Jersey Shore
 
Join Date: Feb 2012
Posts: 112
Mein Auto: 1995 e34
Check your Center shaft bearing
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  #4  
Old 09-28-2012, 03:57 PM
WC5150 WC5150 is offline
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Location: Norwalk,CA
 
Join Date: Sep 2012
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Mein Auto: 1995 525i
Cool Okay! Thanx.

Thanks For the feed back! I will try all..... By the way,has anyone upgraded thief 525i with "Angel Eye" projector headlights? I bought some and was wondering if there is anything to watch out for when installing them?
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  #5  
Old 09-30-2012, 04:49 PM
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1995i540 1995i540 is offline
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Location: New York
 
Join Date: Apr 2007
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Mein Auto: 1995 540I/6
If it's your guibo you can see it right away no need to turn anything, when you are under the car jack up your engine slightly from left and right side (use board/common sense) and see if mounts allow out of spec movements, do the same for transmission mounts. In these cars the culpit for vibration is usually motor mounts. Also check your fan clutch for seizing. The diff bushing will be PITA to fix but you can visually inspect it as far as I can recall.
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