Spongey Brakes

[Neodeuccio]

I just want to make sure I'm on the right track with this one.

My brakes feel awful. They work pretty well, but no matter how hard I push, the peddle never really gets hard, just spongey. I flushed the fluid maybe 5 months ago, and I replaced the entire from brake system minus the lines at the same time. So I'm certain it's the lines... Easily fixed by a set of stainless ones, right? Any other ideas?

 

[mkiii222]

I'd go with the stainless lines and rebuild the calipers using the Toyota rebuild kit(~$20 per axle from the dealer).

The rebuild kit replaces all rubber parts on the caliper giving you a caliper that is just as good as new. I rebuilt mine when I replaced the pads/rotors and it made a huge difference. I still need to get new lines though.

 

[Syris]

Have you bled the brakes? you listed about replacing things but nothing about bleeding them other than flushing them.

 

[Neodeuccio]

I've got new calipers on the fronts, which I put on about 6 months ago. The rears are old. And yes, I bled the lines (to the best of my ability) when I flushed the system. I'll have to look into doing the rebuild... how much work is involved?

 

[Y.O. supra89T]

try replacing the master cylinder

 

[mkiii222]

I've got new calipers on the fronts, which I put on about 6 months ago. The rears are old. And yes, I bled the lines (to the best of my ability) when I flushed the system. I'll have to look into doing the rebuild... how much work is involved?

If you have new(or reman) calipers up front I wouldn't bother rebuilding them.
As for the rears it's about an extra 5-10 minutes when doing a complete brake job. All you do is pull the old rubber bits off, slap some lube(supplied in the rebuild kit) on the shafts, and throw it back together.
I would consider it a PITA if rebuilding was all that was being done, but as stated it's only an extra 5-10 minutes if the car is already in the air and has the wheels off.

 

[LilMissMkIII]

I had a similar issue, went away when i bled the brakes

 

[Y.O. supra89T]

i too had a similar problem
it turned out the master cylinder was leaking internally