In my ongoing saga of this car's brakes (07 XKR), I finally bled the brakes with a Motive power bleeder.

All went well, I thought, except now I have some nasty clicking or clacking when braking at very low speeds, related directly to depressing the pedal. This happens when stopped as well- the further I push into the pedal, the clicks keep coming. I can even feel the noise "feeding back" in the pedal. It only happens when the pedal is hard- pushing it harder. I don't know what I could have done wrong with the powerbleeder, but this car's brakes have just been a curse to me.

No sound at all at speed. No sound at all when the pedal is "soft".

Here is a video of me slowly depressing the "firm" pedal (after stopped, in reverse) and the sound it makes

 

Not had on my Jag but on another car recently (March).

It mainly manifested itself on reverse esp if I left the E-brake on and was down to the inside of one of the pads (UK drivers side rear) being down to the metal. All the other pads inside & out were fine and legal

Am going to guess not your issue as you'd have examined them when bleeding?

What age are your pads/discs? and what kind of weekly mileage have you been doing since you noticed this?

 

Brand new rotors and pads all the way around, maybe 200 miles on them at most? It started just after today's brake fluid power bleed.

 

did the fluid tank get empty at any time during the brake bleed

 

No, it shouldn't have. It was supplied by the Power Bleeder. I did make a mistake and depressurize by the cap (stupid mistake, misread the directions) and excess brake fluid leaked down below the cylinder.

Pedal feel is good, brake performance is good, only now this creaking at low/no speeds when pressure is put on the pedal.

 

if the brake fluid tank got empty and air went into the system and into the abs pump you wont bleed it with out it being hooked up to diagnostic to force the abs to pump the air through that might be the sound of the abs pump that you are hearing

 

OK, I'll see what I can do with SDD

 

check out a few videos on you tube how to bleed abs pump when brake lines have been let go empty of fluid

 

The ABS is behind the left front wheel liner it you have someone to help you listen. When I played your video it sounded like a hammer banging.

if it is just a metallic creaking noise could it perhaps be the pads need lube? I generously apply high temp ceramic cream on pins, slides, pistons, pad backs, clips, etc.

I have used the motive power bleeder on all of our cars as well and it works perfectly.

 

How do you force this with Sdd? I can't find a function in the service function for this.

 

it should be in the abs setting section on the diagnostics look at this you tube vid for an idea how its done it should only need doing if you think air as got to the abs pump

 

I do not recall seeing this under service functions in SDD.

 

Yeah I don't think it's available in SDD, I have a cheap Autel HT-200 which can do a lot for Jaguar, but it doesn't let me do an ABS reset. I'll have to have someone else press the pedal so I can see if it is coming from the ABS pump or the calipers.

 

you could try this method but you only need to do this if you think air as got to the abs pump


BLEEDING TEVES BRAKES

TWO PEOPLE REQUIRED

START AT REAR LEFT, THEN REAR RIGHT (UNLESS JUST ONE REAR BRAKE NIPPLE) THEN FRONT LEFT, FRONT RIGHT.

ONE PERSON IN THE CAR, ENSURE BRAKE FLUID LEVEL IS FULLY TOPPED UP.

TURN ON IGNITION AND WAIT UNTIL BOTH ABS AND LOW PRESSURE LIGHTS HAVE EXTINGUISHED AND ALSO THE MOTOR PUMP HAS CUT OUT.

THEN, OPEN REAR LEFT BLEED NIPPLE AND HOLD BRAKE PEDAL DOWN, WITH IGNITION ON FOR 15 SECONDS – NO MORE

TIGHTEN BLEED NIPPLE, TURN OFF IGNITION, RELEASE BRAKE PEDAL.

WAIT ONE MINUTE AND REPEAT FROM RESTORING SYSTEM PRESSURE AS ABOVE FOR OTHER NIPPLE IF FITTED – THEN WAIT ONE MINUTE AT LEAST BEFORE MOVING TO FRONT BRAKES – THIS PREVENTS THE MOTOR PUMP FROM OVERHEATING.

AT THE FRONT, ENSURE SYSTEM PRESSURE IS CREATED AND THEN BLEED CALIPERS CONVENTIONALLY WITH IGNITION ON, USING SLOW STROKES AND GO THE FULL TRAVEL BUT DO NOT FORCE.

ONCE THE LEFT SIDE HAS BEEN DONE, AGAIN WAIT ONE MINUTE AND THEN RESTORE SYSTEM PRESSURE.

ENSURE BRAKE FLUID LEVEL IS CHECKED AND TOPPED UP AFTER EACH CALIPER IS BLED

 

OK after a two person look, the creaking is coming from the front left caliper. I'll have to disassemble to take a further look

 

The abs pump is behind the left front wheel liner

 

Well the solution was so moronic I don't even want to post it, I forgot to Loctite one caliper mount bolt and it was missing on the front caliper, causing an imbalance between the bottom bolt that was still there. So that would have to be the issue.

 

I bet your happy I know I would be

 

No shame in an oops.

 

Thanks for all the help, got it fixed and checked all the other calipers to be sure. I think I've finally gotten the brakes done on this car.