XF Rear End Rattle Driving Me Nuts! - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

Extreme_2020 · 04-14-2003, 21:55

Hey Guys..

ive had an annoying rattle in my XF disk brake rear end for a while now. It seems to be a metallic rattle, and when i press the brakes it dissapears...now ive had the brakes checked by 2 different mechanics, had them pulled apart, and all the pins lubricated and cleaned, and it still does it. One mechanic sugested some bushes somewhere in the rear end could be causing it...or wheel bearings perhaps?

Thanks for the help!

MADXF · 04-15-2003, 00:59

When does the sound occur?

Do you have electric boot release?
Cause mine was rattling at one stage, took me ages to work out what it was.

Also, might be an idea to get a mate in the boot and go for a drive round the block to pinpoint the sounds location.

cs123 · 04-15-2003, 04:40

Is it the handbrake cable rubbing on the lower arm? I seem to remember something similar on my XE and I'm sure I fixed it with some cable ties.
There is also a chance it is the pads just rattling, some anti squeal on the pad backing plates may help.

Jack the car up on stands and tap the disks with a rubber mallet, it may help reproduce the noise.

Extreme_2020 · 04-15-2003, 07:36

Nah..no electronic boot release (im thinking bout fitting one actually...sick of getting out to open the boot! :-)

hmm...the brakes have all been checked twice!...although they may have not applied such anti rattle compounds to the brake pads...

the sound occurs most of the time...although if im on a very flat road it dosent do it...but as soon as the brakes are pressed it dissapears...then comes back!

Its got me stumped!

04-15-2003, 15:45

It is common for the pads to rattle on XE-XF rear disc calipers, put a little bit of silastic between the pad and piston, that shut it up.

Extreme_2020 · 04-15-2003, 21:18

Thanks Guys!

Ill put some sillastic on and see how i go...

kinda makes sense...as when i press the pedal the brakes the piston would push against the pad and stop the rattling...

Extreme

50LtCapri · 04-17-2003, 22:28

Also check the mounting pins for the calipers. These can wear and the whole caliper is loose and will rattle. The rattle in this case will also disappear under braking.