Pulsating brakes

[Dilly02]

Hi Guy's,

 

Had my 350z for about 6 months now and since I've had it its had sort of like pulsating brakes??? Its like I'm lifting my foot on and off the brakes but I'm not. I don't think it's a warped disc as it doesn't feel as if its coming through the steering. I've checked the pads they are fine but am replacing soon anyway with ferodas. Just curious as to what it could be, has anyone else had this problem?

[Bodyboarder81]

I still would be looking at the discs mate , maybe looking into getting them skimmed if they are in good condition ?

[brillomaster]

I don't think a warped disc would come through the steering, but it would certainly judder under braking. How old are the discs? might be worth replacing them if they're getting on a bit and developing a lip.

[ZMANALEX]

If your rotors and pads are in good shape, then pad deposit or perhaps abs sensor are two that spring to mind.

[Jay Kay]

check the back of the discs, I bet they are rusty even if the front of them that you can see through the wheel is nice and silver. If so a skim should sort them.

[Dilly02]

So I've replaced the pads and even did the discs too, its not as bad but its still there, I'm gonna let the brake pads wear in and see how it goes, if it was the abs would it just be sensor replacement? a

 

I guessed that if it was a warped disc or lip it would happen every time I used the brakes but it varys sometimes it's fine sometimes it awful.

Edited December 3, 2015 by Dilly02

[ZMANALEX]

Your issue could be an ABS sensor and they are easy to swop out, however you will require a proper diagnoses so you know what one is potentially faulty.

Edited December 3, 2015 by ZMANALEX

[Ebized]

Suggest you pay a visit to Marcus (trader on here and has helped sort out brakes for many members on here) - he's not far from you, and he will sort out your issue - see his website:

 

http://www.discskimmers.com

[Rob332]

Sounds like a faulty ABS sensor, or one of the teeth on the pick up ring is damaged/ broken off.. A competent garage should be able to measure the signal at each wheel station and diagnose on which one the fault lies.

[MJC]

I've just had the same issue- turned out to be the front wheels and not been balanced correctly. Sometimes there was no issue with braking, although some times i had an

'ABS-like' judder. Sometimes the unbalanced wheels counter acted, sometimes they didn't. Cheap fix and all sorted.

[samsniss350z]

As Rob332 says, I had this trouble with one of my S14's and it was soon sorted. Not so sure about MJC's diagnosis as this would be felt without using the brakes especially at speed.

[gstraw]

Visit Marcus. Don't change anything else until he had seen it

 

 

Sent from my iPhone using Tapatalk

[Raymie103]

Make sure the surface on the hub contact area is extremely clean before you fit the new discs, ive seen so many new discs fitted on hubs that haven't been cleaned properly and you will still have a vibration due to run out because the surface area is not clean. Just removed mine tonight as the previous owner fitted new discs and had brake shudder, the surface area is corroded and not cleaned up hence the vibration. Worth a check!

[Ewen@Clark Motorsport]

Make sure the surface on the hub contact area is extremely clean before you fit the new discs, ive seen so many new discs fitted on hubs that haven't been cleaned properly and you will still have a vibration due to run out because the surface area is not clean. Just removed mine tonight as the previous owner fitted new discs and had brake shudder, the surface area is corroded and not cleaned up hence the vibration. Worth a check!

 

Very good advice there, this is so often overlooked!