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Old 10-10-2010, 11:25 PM   #1
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Strange noise when turning left-right

Dear Forum Members,

First of all I would like to thank you guys for all the support and advices you are providing. I have to admit, if this forum didn't exist I would have sold my Boxster long ago, or would have gone banckrupt trying to find out various problems. But you guys here are very helpful. So thank you....

The new problem which appeared quite recently is a noise coming from a front side, when I make left or right turn. The strange thing is that, it does it only when you make a hard turn, like U turn or 90 degree turn, and accelerate.

When I drive normally, change the lane, or slow speed turning no problems. But if I am turning left or right from the stop, kicking down the throttle the strange sound come out.

I will try to describe what I mean by strange sound. It sounds like bad bearing but more kicking noise... like db db db dbdb... as soon as I straightn the car, the sound goes away.

I spotted, that sounds is coming out when the car leans a bit, I mean when one makes turn a bit hard to the left, the load goes to the right tire and thats when the sounds comes up. It also sounds like, the tire is coming of the wheel, and it is just an wheel on the ground for few seconds. But checked. and this does not seems to be a problem.

I had a car to the shop to check it at least three times. Everthing is tight and all works great. there is nothing suspecios. I have checked balance of the tires, and the specialist told me, that something is wrong with my tires. Despite the fact the look great, they can not get balanced. They are difformated.

Could this be the reason for the sound? Or should I check something else?
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Old 10-11-2010, 04:54 AM   #2
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it's your engine mount. this is a common problem & generally hard to diagnose because it sounds like so many different things.

the rubber center separates & the motor shifts a little when you turn. when it shifts, it makes a very rubbery db db db db db sound like you describe.
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Old 10-11-2010, 06:23 AM   #3
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Thanks for feedbck.

So, do i understand it right, the sound is not from the front but from the back?
Should it be replaces? or it is normal? If needs to be replaced How critical it is? Is it like I should stop the car before I replace it, or can i use it for a while before i order the part and get it delivered? It could easily take a month or two. Any suggestion on the part number?
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Old 10-11-2010, 06:49 AM   #4
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you can continue to drive the car. what year is it so we know which part number you'll need?

also, it is possible to fix the old engine mount with liquid polyurethane.
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Old 10-11-2010, 11:12 PM   #5
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Thanks alot. Of course I will check it at first, and see whether a simple solution would help.

It is 1998, 73 000 km. 2.5 engine. manual.
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Old 10-12-2010, 12:14 AM   #6
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Thats a typical indicator of a bad cv joint. When you turn the wheel all the way you push that joint to the limits and itll make noise.
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Old 10-12-2010, 01:40 PM   #7
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Quote:
Originally Posted by elmorm
Thats a typical indicator of a bad cv joint. When you turn the wheel all the way you push that joint to the limits and itll make noise.
That sounds like the problem I'm having, elmorm. A few times I get a big loud clunk apparently from the right front wheel area when turning the wheel left, but only when the wheel is fully locked left or close to fully locked.
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