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Squeaky over speed bumps

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1997 Boxster is squeaky on the drivers side when I go over a bump.

It only happens after the car has been driven for 30 minutes or so. Tried to jack

up car and have someone rock it to find source but it won't sqeak. Also jacked up

the front and placed a 6"x4" block under each front wheel..could not duplicate noise.

Does the front end require any lubrication? I did not see any nipples... :o

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Is it a squeak or a creak? a creak suggests outer track control arm bushes, if its a squeak it could be the inner rubber bush. I've had both of these noises on mine, temporarily cured the latter with some silicone spray, if the outer bush is worn then the arm needs replacing. I managed to get some lub into mine with a syringe been fine ever since..... about a year now, no problem with the MOT test etc.

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I think the inner bushes can be replaced but its probably just as cheap to replace the whole arm when replacing the outer ones, they need to be pressed in. Do a search on e-bay. But try lubricating first if its squeek!

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Squeak was coming from the lower control arm balljoint on drivers side. Disconnected balljoint and shot a wad of grease in it using a needle attachment for my grease gun. Balljoint was still tight. It is possible to sneak the needle alongside the stem of the balljoint without damaging the rubber. You must disconnect it first.

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