The wife's 98 Forester S has a pulsing in the brakes, it not every time and normally not that hard of a pulse. I've pulled the tires and but a dial indicator mag base on the strut and tip on the outside of the rotor Les then 0.001 run out so rotors seem to be fine. It got front calipers and rotors spring of 09 and rear rotors and calipers (ouch) this fall.
I've checked the CV shafts they all seem good. Pass side inner has a ripped boot but its constantly lubed by and oil leak....
Check rear drive shaft it seems fine.
Rear dif is full.
Trans is unknown lube level (how do you check it?)
Last night I noted if I pressed harder it would go away...
I've sprayed down the rotors with Brakeleen and scotch brite no luck.
Only two things I can think of are.
1) Lower ball joint?
2) Overactive anti-lock brake.
Anyone got another place to look?
Thanks
44
They felt okay...no slop and car drives straight. Tire wear is okay getting low on tread but passable inspection wise.
Thanks.
44
Brake pulsation is generally caused by a build up of material from the pads. Rotors seldom "warp".
A slight pass on a brake lathe will probaly cure the problem.
My wife's '05 Saabaru falls prey to this as well. It seems to mostly go away after a flush/bleed of the system, as well as after 're-bedding' the pads (several hard near-stops from 50-60mph with gradual accel between). I've given up on trying to solve it completely.
4g63t
Reader
1/8/10 2:48 p.m.
Tony, there is a dipstick on each side of the bellhousing under the hood to check the lube for the transmission and front diff.
could it be the anti lock brake sensor? My girlfriends saturn vue has a problem where it eats anti-lock brake sensors, maybe its a similar problem?
Andrew
The lower front slider pin on my WRX has a small rubber seal on its inner end that frequently destroys itself. There must be some play at the pin that causes it. Maybe you have something similar going on in there.
