Squeak in front on humps

[ach]

I have my 993 4S quite recently and we are now in process of getting to know each other...
Can anybody tell if this is normal to hear sounds that I can describe as squieaks from the front (it seams like sound comes from very close to weendshield area but from outside) when I drive on or out the humps (pedestrian "plateaus" for example).
It seams that the sound comes from suspension... could it be "tired" silent-blocs or old rubber parts in shock absorbers?
When I drive on normal even a bit rough roads the car goes really smooth and silent though...

 

[Mark Elder]

I have something similar. Only notice it going (very) slowly over large speed bumps (as front of car drops off the bump) and quite fast over something similar to a hump back bridge (although it's not one) on my regular journey from home to airport. I'd assumed it was a suspension thing (I'd have described it as being a bit further away than just the other side of the windshield).

 

[RichardLW]

Proably the bushes in the front suspension arms and maybe the roll bar bushes too - spray them with WD40 or a silicon type thing and it ought to stop. Mine did exactly the same, as do many others, until the above was done - and I replaced the roll bars so the bushes got done anyway. And the cold weather doesn't help either.

 

[fergusond]

my C4 does the same, it has new suspension and roll bar bushes etc, i believe it might be the wish bone rubber bushes which I may take to bits later in the year and replace. I've never tried spraying these things with WD40, may depend what penertration you will achieve as they are quite long. Let us know what you find.

David

 

[leesweeney]

ORIGINAL: ach

I have my 993 4S quite recently and we are now in process of getting to know each other...
Can anybody tell if this is normal to hear sounds that I can describe as squieaks from the front (it seams like sound comes from very close to weendshield area but from outside) when I drive on or out the humps (pedestrian "plateaus" for example).
It seams that the sound comes from suspension... could it be "tired" silent-blocs or old rubber parts in shock absorbers?
When I drive on normal even a bit rough roads the car goes really smooth and silent though...

Mmm. I thought it was just my car that did this. Given the other respondees who have all had the same sound without catastrophic effects I guess it can't be that serious.

 

[RichardLW]

they all do this squire - its a feature innit...

 

[nickgardner]

front anti roll bar bushes probably, especially if it does it at low speed when both wheels hit the bump at same time (sleeping policemen etc). I'm told if you take them out and vaseline them it goes away but I just live with it

 

[ach]

Thanks a lot to all who responded... It seams this is not a unique thing. I will try to spray the bushes and will let you know the result.

Andrew

 

[craig2105]

ORIGINAL: ach

Thanks a lot to all who responded... It seams this is not a unique thing. I will try to spray the bushes and will let you know the result.

Andrew

I'll be doing the same. I always thought it might be the roof (mine's a Targa) and it seems to be worse now the temperature has dropped a bit. Will be interesting to see if the WD40 trick makes a difference.

Craig

 

[dr fletch]

yep, mine too...let us know...

 

[Sundeep]

ORIGINAL: MoC2S
Hi Andrew

Spraying may not be sufficient .. the front antiroll bar bushes are prone to get road crap in them, really need removal, clean, regrease .. [:-]

cheers, Maurice

ditto to Maurice, you need to underneath and give it a good clean, steam clean is you can as those squirrels can get everywhere !

 

[Heuer]

My car just returned from an OPC service with the comment "noisy front and rear anti-roll bushes" on the service report. It must be a 993 'feature' as it never occurred to them to try and fix it!

Be wary of using silicon because if (God forbid) you need any bodywork done in the future it will make a re-paint difficult.

 

[Johnny C]

Avoid using WD40, as it's only water-deterrant for a while (WD40 means water-deterrant 40 days I am told). After that it breaks down and you either redo it or use something like vaseline

 

[Pickled Piper]

As per the previous posters. the WD40 is only a means of diagnosing and a very short term fix.. The proper way to resolve the problem is to remove the bushes, clean and then lubricate them, If they are the original bushes you may find they are hardened and deformed out of shape.

pp

 

[ach]

So finally I greased the bushes of the roll bar (losen them first)...Indeed, the squeak disapeared!!!
The car runs very smoothly now. []

Thanks again for good advice!

Andrew