ABS and shocks questions

straight5 · Friday 29th May 2009, 11:27

Just wanted to run two questions by people.
Something is making a "psst" noise when I go over speed bumps etc. I think it is coming from the front passenger side shock absorber. Sounds like air being forced through a small space. Is this a sign that the shock is leaking?
What are the standard shocks on an S60 T5 and what is the usual cost?
The other problem I have is (I think) that the ABS is intermittent under heavy braking. I even have found when braking really hard that it has made a distinct banging noise. Is this likely to be a fault with the ABS modulator? If so what is involved in repairing/replacing that?

Any advice would be gratefully received.

**flyingbrick** · Friday 29th May 2009, 12:12

Hello bud.

The banging under braking could be your front link bars. They seem to be a common fault on all volvos. Not sure about the hissing noise don't think it will be coming from your shocks mate.

**S60-MBS** · Friday 29th May 2009, 12:48

The Hiss when going over bumps is pretty normal I think,I have heard it from car from day one,Its just the shocks compressing and releasing.The cars undergone so many checks nothings been reported as unusual so far.

straight5 · Friday 29th May 2009, 18:50

Hi Flying Brick, no its definately to do with the ABS. When Im braking really hard and the ABS kicks in, you can feel through the brake pedal as the ABS puts the brake on and off. Sometimes if I brake hard enough but not every time, I can feel the pedal move with a sudden jerk in time with the bang. I recently had all the suspension checked out as I had to have one of the front struts replaced for a different knocking that had initially been a suspected front link. So Im almost certain thats all ok.
On the psst noise you could be right S60-MBS, I bought the car in December and never noticed it until recently, but maybe not coincidently its obviously been the weather for driving with the windows down recently.

**Dangerous Dave** · Friday 29th May 2009, 21:38

I used to get the hiss whenever I went over a bump, but I've got new shocks on now, and it doesn't do it anymore.

straight5 · Saturday 30th May 2009, 20:06

After a bit of testing which involved alternating going over speed bumps on just the left or the right, I have found the noise is only coming from the left. So I think therefore that if the right shock doesnt do it, that it must be a bit leaky on the left one. Anyone got advice on shocks. ie cost of etc. Is it worth using the opportunity to upgrade, or are T5 ones pretty good anyway. Certainly handling feels sharper than my father in laws D5. How much improvement could I see with new standard shocks over old standard shocks anyway?