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  #1  
Old December 21st, 2011, 01:57 PM
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Kenneth Elliott
1994 D90 AA yellow (NAS)
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Acceleration Thump

Hello to all.
I recently acquired my first D90.
I have a Thump that occurs during acceleration. Especially in 1st and 2nd gear in traffic. I can feel it in the floorboard.
I have looked at all the U joints, haven't had a chance to check out motor and tranny mounts as of yet.
does anyone have an idea as to what may be causing this?
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  #2  
Old December 21st, 2011, 02:05 PM
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J. Andrew
95 D90 NAS SW #384
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Check out the A-arm ball joint. If the boot is damaged it should be swapped out.

Other things include any of the bushings (radius arms) etc.

B/c you're new to your 90 here's the picture
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  #3  
Old December 21st, 2011, 02:46 PM
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Jamie Austin
1992 110 Td5 CSW & 1989 MB G-Wagen
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^^^^ What he said;

A frame ball joint,

or Trailling arm joints eitehr end (although these usually give a "crab" steering effect with gas on/off)

Any of the front arm bushings

But my money is on the A frame one.
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  #4  
Old December 21st, 2011, 07:38 PM
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Kenneth Elliott
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Damn, sure enough.
A-frame.
Thank you.
Most of the bushings aren't looking too hot, and my shocks are all leaking.
Does anyone know if there is a polyurethane bushing kit i can up date to?
Suspension options? I keep reading about safari guard, but seen no where to buy.
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  #5  
Old December 21st, 2011, 08:55 PM
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Mike
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You have a bunch of options in poly bush sets. Check all the vendors here on the boards or Ebay UK
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  #6  
Old December 21st, 2011, 11:52 PM
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95 D90 NAS SW #384
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Quote:
Originally Posted by Keebler View Post
Most of the bushings aren't looking too hot, and my shocks are all leaking.
Does anyone know if there is a polyurethane bushing kit i can up date to?
Those were likely the original bushings, so despite the rubber's bad rep, they are pretty durable, and I think the ride's better FWIW
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