Recently I noticed one of my front breaks squeaks/squeals as I break and come to a stop at slow speed - I think the right front brake is the culprit. Also at these slow speed stopping the car causes a noticeable lunges forward, especially if I depress the break down more, it then does a front nose dip stop and then the car rocks back or rebounds - I do not like that !!! it is not a graceful stopping motion. Is this worn front break pads ?. I have been driving it a little hard the last month.

Anyone experience this ? ideas - suggestions please ?

 

If you have 40,000 miles on the front brakes then maybe.

Otherwise most likely you need to tune up the brakes with a series of very hard braking events.

Give it a try and let us know.

 

Sounds like you have 2 separate problems -- the transmission lurch issue, and the squealing brakes issue. There is a TSB for the brakes to put on a newly designed anti-squeal spring, and somewhere on here I read about the transmission lunge that has been a problem since the S-Type, which was the predecessor of the XF.

Here it is: http://www.thelurch.com/lurching_zf_transmission.htm

https://www.jaguarforums.com/forum/x...-fixed-127680/

 

I try the breaking etc. The squeak is not all the time just usually when the car has been on a run. But I do have over 40,000 Miles on the car !

 

bollocks, I find that with brakes as they get old, some will get noisey. I would say to pull the wheel(s) off and check the pad thickness. If they are getting close, might as well be ready to put on new pads. When doing the pads, make sure to take a wire brush to where the pads touch the caliper (be careful of the rubber boot on the pistons, don't want to be ripping that) to remove any dirt/rust that may have built up. Just before inserting the pads, apply some "pad adhesive" (available at your local auto parts store, like $5 for a bottle that will last you 100 brake jobs, doesn't take much) to where the pad touches the caliper. Once applied, get the pads on the car and reassemble the caliper. Once the bolts are tight on the caliper, depress the brake pedal to push out any excess pad adhesive (you only want a very micro thin layer, so, a good press on the brake pedal will get you this). From here, reassemble the wheel and move on to the next one.

What I have found is that with age, the pads will get a bit of play in them and they will bounce/vibrate, resulting in the squeal that you are hearing. The pad adhesive prevents this from happening and keeps the pads from gently rubbing on the rotors as you are driving down the highway and the vibrations as you are braking. Removing the pads later is not that much more difficult. A gentle push on the pads and they come right off.

 

Okay I am going to change/inspect the Front bake pads for sure. A simple question I need answered is what is the best front Pads to buy !!! I drive hard ! what that means is I am heavy on acceleration and quick to brake on all types of driving. I do mainly long distance at high speed, but around town I like to show off. I have read a lot forum threads about ceramics EBC etc, but I cannot get a consensus on the actually pads to buy - too many opinions out there.

 

been riding on that sound for the past week, annoying.

got my rotors and pads, installed them, solved the noise.

no lunges when stepping on the brake!


YAY

 

Why - so what was the problem ?

I still have it and have been meaning to take it in to a shop ?

Front brakes ?

 

Did you read that TSB post from the second guy for a possilbe tranny issue?

My problem was the pads itself.. By replacing them and my rotors as well.. The squeak disappears.. But there is still noise cause i havent passed the break in period yet.. Though the noise is faint..


Yeah man takr that to the shop?!!!! Why havent you still.. Your at 40k you should have warranty still for the lunge issue.. I just wish i took advantage of the 50k warranty.. Oh well

 

I dont think it is the Lurch ! I do think it might be the clip on the brakes and worn pads...

Interesting enough I am on business and busting around in a Challenger and notice I get the same type of breaking effect and the NOISE (this rental has 36K) when I hit the breaks hard it dips forward and then drops back.

 

Just to add to the list of possibilities, there is the possibility of friction material delaminination.

When a brake pad is worn, the friction material may delaminate from the backing plate under hard driving. The brake pad will then vibrate and squeal as a whole when under stress.

The tech article noted that the delamination can be very difficult to see but can usually be spotted by cleaning off all the brake dust and trying to slip a feeler gauge between the friction material and the plate.

 

Would this apply even if you replaced rotors and pads?
Like would the back plate still produce contact and or noise?


Say you dont replace the brake pins.. Could they also play a part in being the culprit?