Brakes pulsating!?! - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Tool Pants · 01-25-2005, 10:31 PM

Sure sounds like ABS to me.

Perfectlap · 01-25-2005, 10:54 PM

ok the ABS kicking over sand and snow makes sense since I have no grip to begin with. But does the ABS usually kick in during sudden dry surface braking? and is ABS unaffected by the clutch engagement?
I'm wondering how this is going to feel like when Autocrossing/track, I'm used to stopmping on the brake and locking up often. With ABS It feels like the car just doesn't want to stop quickly!
A few times recently the ABS kicked in and I wasn't really going that fast.

Is this often traction control initiated ?

gardjea · 01-26-2005, 02:47 AM

Had the same issue with my 986 S ... when breaking with a road surface no perfect ( kind of small waves) the ABS was reacting in a strange way . With my new 987 it seems that thy corrected this issue .
JMG

Perfectlap · 01-26-2005, 02:21 PM

I've driven many cars and none ever felt this way (like a rock was stuck in the rotor). Does the PASM bypass ABS? Or is there any way to switch off the ABS and allow locking up? I'm only interested in doing this when driving competitively.

By the way does anyone know of a good link that explains the Porsche ABS?

Jeannot · 01-26-2005, 02:25 PM

PASM? You talk on a 987 here or are you talking 986?

Perfectlap · 01-26-2005, 02:37 PM

PASM for 986

JonnyBGood · 01-26-2005, 05:17 PM

I think what you're describing is the ABS. This year in the snow is the first time I"ve had it do that to me and really only when I KNOW the wheels are trying to lock up.

It does feel wierd though. Its an uneven pulsing as if the wheels are going to fall off. I have had other cars and this is the first one that seems to feel uneven when it pulses.

I don't think I'd worry about it. I definately think its the ABS