Hi, I have a C4S and recently (500 miles ago) had West End Alignment install a new set of PSS9s. My problem that I have is when traveling slowly (parking lot speeds) over bumps or dips I hear a clanking noise coming from the right front coilover. It doesn't happen all the time. When stopped, I repeatedly pushed down the front end of the car and it appears that the small "helper" spring of the coilover is making the noise. I applied a fiml coat of grease on this spring, as well as WD-40 but both do not rid the noise. Is anyone experiencing this and what was your remedy? Thanks.

 

Need to look at some other areas - swaybar links and such. In this case there are other suspension parts that can make that noise that are older than your PSS9s.

 

I'll check it out further. Thanks.

 

Same kind of problem having here!!!
I have also just recently (like 800km) ago installed the Pss9, only difference with you is that mine is a 996C2, right front sounding when slow speed passing bump!
plz keep me update!
Thx!!

 

Yea mine does it also - and I have swapped out to H&R swaybars
I have checked all links, steering linkage etc...it is not any of this. I think it is a bump stop issue and a speed bump or dip causes the top of the strut to bump/or the mounting point. I have not seen any damage or anything negative caused by this...it is unnerving and irritating.

 

I'm nearly certain that the clanking/clunking sound is coming from the smaller spring. But if it is in compression why the movement and sound? I'll look into it further later this week with a wll informed Porsche friend/mechanic. Here's a recent pic of my ride...

 

Check your

- bearing washer
- top nut torque
- seating of springs

Might have to add something (washer) to where the spring seat meets the upper housing.

Google PSS9's and noise...every car forum has threads on it.

If your installer is any good they can figure it out.

Came across these items that may help the helper and main spring rotate easier (thrust sheets):
http://www.swiftsprings.com/products..._products.html

 

As above - the better Coil Overs come with thrust sheets.

 

Good info, I didn't know about those. B4 I opt for those, I took a look at the front today. I tighten the upper sway bar to sway bar link nut as it was a bit loose. I torqued to 37 ft-lb based on my Boxster manual, does anyone know the torque for a 996 C4S?????

Additionally, I sprayed some motorcycle chain lube on areas of the springs that come in contact with metal, mainly the tops and bottoms of both the main and helper springs. Seemed to do the trick though I didn't drive it far since it takes awhile for the chain lube to become tacky.

Thanks for the responses.

 

I just installed the pss9 on my 997 and I am hearing this noise as well when I go over bumps and turns after going over bumps... Any suggestions?

 

I have JICs and get the deam noise at low speed braking, starting to put the stereo louder cause I cant find the deam source of the problem

 

Thrust washers fixed my JIC noises. They should come with them IMHO.

 

see here

 

One common issue with the PSS9 is the thrust bearing. Do a search and you'll find out that you need one.

What sway bar/links do you have in the front? A problem that sometimes occurs is noise from the sway bar/Tarett link combo.

-td

 

Do they make Coilovers that don't make some popping, clinking and spring noises????

I don't think I have ever owned a set that didn't.