I'm bringing this up once again in the hopes that one of you will be able to help me. I have a 2002 wrx wagon with a 4eat and ~115K miles. I purchased the car used and it has constantly had the problem of not being able to stop properly when the car is cold, and an almost constantly spongy pedal.
this means that when the car is in D, and I stop for the first time after starting the car, i need to shift it into neutral in order for the brakes to stop my car. If I leave the car in D then I need to leave quite a bit more distance in front of me if I wish to stop in time. This is because the pedal goes to the floor and the brakes will not be able to stop the car from "powering through" them, I'm not to sure how else to describe it. However when I shift it into neutral the car stops and rests just fine, and the RPMs jump up in order to warm up the car. After a few minutes when the car warms up it stops just fine.
This has happened the exact same way in all four seasons, with the following setups, over the past few years.
Setup one: Bone stock. stock pads, stock rotors, fluid etc...
Setup two: Drilled Brembo Rotors front and rear, metal matrix track pads, SS brake lines and Super Blue Fluid.
Setup Three (Current): Stock rotors, Hawk HPS pads, SS brake lines, Super Blue fluid.
When switching to the current setup, I had a professional subaru mechanic do the brakes for me. He installed the rotors and pads and did a full brake bleed. When he was done, he found that the old drilled rear rotors were so warped that they couldn't even be turned.
I never felt any kind of vibration when I was driving on that setup. Not sure what that means.
At any rate, Im at a loss. Two days ago I had to make a panic stop and I felt the pedal bounce off the floor. Since then I have not been driving my wagon and I have been considering the various scenarios.
I am not leaking fluid anywhere.
The brakes have been bled and no kind of air is found.
The calipers show no sign of drag.
The pads are about a month old and have around 1500 miles on them, they also show even signs of wear.
Short of installing a new MC/BB or somehow finding a 5/6MT to swap in, I am at a loss.
Any advice would be great.
Thanks in advance.