'90 245 wagon brakes

[AND Books]

i've driven v's since my first 544 in the 60s... been through them
all. now, i just bought a 1990 auto wagon w 87K and all is well except
the front brakes oscillate. i've checked pads, calipers, disc (as best
i could) and found all ok and thought it would work out... after 2K
miles, it's still chattering (no sound), and i can't figure out why!
ok, after 2months tonight i looked, and it is *not* abs, although that's
how it feels... the discs are ungrooved & polished, the pads are at
least 80%, the calipers push-in smoothly (no blockage)... what's left?
it's not seemingly from only one-side... there's no problem stopping,
but it is not right... now that weather permits me to look at it better
i'm not sure what to look at or for. At first it seemed like the long
resting car just rusted-up the disc... which i cleaned & checked, but
after 2000 smiles it's still pulsating when i brake. any suggestions?

thanks,



--

 

[Perry Noid]

Warped rotors?... should be relatively cheap to replace them and see if that
solves the pulsation problem.

 

[Duane]

Pulsing brakes. The never ending quest for solutions. Prior to blaming a
rotor read:

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml

Then look elsewhere. I have had "pulsing" brakes at one time or another on
both my autos. The 85's went away after I changed the pads, polished the
rotors, and "broke in" the new pads with several increasingly harder near
stops from 60 to 5 followed by a rest of two hours after the last stop.

My 90 when I bought it had that "problem" but it still stopped and steered
without difficulty. I changed the pads once they were worn, "polished" the
rotor, and "broke in" the pads. This reduced but did not eliminate the
vibration when braking. Under hard pressure, there was no vibration or
pulsing. Only noticable under normal everyday stop pressure.

With 250,000 miles I finally changed the front end bushings, tie rod ends
and strut tubes and mounts. Only now do I not have any pulse in the pedal.
For mine it was a border line right front tie rod end that was causing the
pulse.

Duane