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Old 05-17-2023, 01:17 PM   #1
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Boxster Wiggle

Ok guys, here is one for you guys. My 2000 Boxster 2.7, 185,000 miles, has a tracking issue in the rear. When going down the road in a straight line 50 mph and above, the rear end darts back-and-forth almost like you were driving on some kind of grooved pavement.  itís not like the car is fishtailing, itís just a wiggle.  iíve had the car up on Jackís and been all over underneath. I see nothing loose or out of place. Iíve pushed and pulled and tugged on everything. Iíve checked every nut and bolt on all of the suspension sway bars, etc., nothing loose. Wheel bearings are good, shock mounts are good. Iíve had it on jackstands with the rear tires hanging free i.e. no weight. Iíve had it on jackstands and then jacked up each tire so that it is holding weight and checked it for anything loose.  I changed my tires, Michelin pilot sport, and put my sticky track tires on. It still does the same thing.  the only thing that I can figure is it may be the steering rack. I donít feel any play in the wheel. I donít feel any play while driving and the rear end is wiggling. Recently change the front motor mount  so that is good. I have never changed the two transmission mounts. This has got me stumped. Iíve owned the car for 13 years and put 100,000 miles on it. Iíve never seen or felt anything like it. has anybody got any  bona fide ideas. Please, no jokes, Iím way past that. thanks in advance.

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Old 05-17-2023, 07:16 PM   #2
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Have you had the alignment checked?
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Old 05-18-2023, 01:02 AM   #3
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No, i have not checked the alignment. Iíll do that. Thanjs
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Old 05-18-2023, 02:13 AM   #4
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You don’t mention if any of the suspension has ever been replaced. You’ve. potentially got a bunch of 23 year/185k mile old rubber bushings front and rear.
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Old 05-18-2023, 03:31 AM   #5
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Thanks Tom, you are right. I have not replaced any suspension parts except the sway bars. Rather than just replacing everything, where should I start. Obviously the rear. Then what? This could get expensive.
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Old 05-18-2023, 09:37 AM   #6
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Quote:
Originally Posted by Pastor T View Post
Thanks Tom, you are right. I have not replaced any suspension parts except the sway bars. Rather than just replacing everything, where should I start. Obviously the rear. Then what? This could get expensive.
I'd get the alignment -- that almost seems like one side or the other has some toe -- could be in or out. One of the control arms could be bent ever so slightly --- or maybe while still tight, something knocked something and added some tow, but otherwise appears fine (i.e. tight) -- until you drive it.
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Old 05-19-2023, 10:14 AM   #7
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Thanks, I think you may be on the right track. I'll move in that direction.
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Old 05-28-2023, 12:19 PM   #8
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Alignment and suspension such as bushings and control arms etc would be my guess.

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