Mc.Queen 964

Hi guys,

Last week I leave my car in the workshop to change pads and spark plugs, now, I hear a HIGH noise when I brake, like "YIIIIIIIIIIIIIIIIIIIIIIIIII", and If I take a corner to the left, like a "Yii Yii Yii Yii", Second noise is not new, I though that it was a bearing, but my mechanic said that it was pads.. But first noise is new.. and I don't know what I could do..What could it be?, the noise comes from left front caliper..
,
On Monday I will go to my workshop..

Rocket Rob

What type of pads are you running? Street pads are quieter than track-oriented pad compounds. And have your checked your backing plates for corrosion?

Rocket Rob

Found a thread about caliper corrosion. https://rennlist.com/forums/964-foru...ion-clean.html

Mc.Queen 964

I put Textar ones, like Porsche originals

Steven C.

Ok in order:

1. New rotors or did you clean the old ones well with brake clean?
2. Did you re-use the anti squeal shims behind the pads or use new ones? They glue to the back of the pads and hold it in place to prevent the noise. Get new ones or re-glue the old ones to the back of the pads with a brake anti squeak goo.
3. Did you clean and re-grease the contact surfaces of the pad to the caliper with high temp grease?

This order of pocedure will prevent squeals 99% of the time.

Mc.Queen 964

I don't know, my mechanic did that, but he know about Porsche.

I didn't change my rotors..And anti squeal shims are the old ones..