I'm not sure where to put this question first off. But since it's a brake problem i'll start here. I've also done alot of searching but thus far i've come up short.
02 wrx wagon with 4EAT Approx. 117,000 miles, Daily Driver, never tracked.
Goodrige steel lines
Hawk HPS pads
new stock rotors
ATE superblue fluid
Agency lightened crank Pulley
Grimspeed air/oil separator
My brakes have always been weak from a cold start so much so that I have to throw it into neutral in order to completely stop until the car warms up. I have gone through several iterations of brake pads (Stock pads, Brake Pro's Metal Matrix, Hawk HPS) and it has always done this. If I leave the car In drive while i'm stopped and the engine is cold, the brakes dont have enough bite to keep the car from slowly rolling forward even if the pedal is fully depressed. Then when I do let off the brakes they release with a loud, CLUNK. it can be especially heard on the rears.
I had all four rotors replaced as well as new pads put on and the entire system was bled with new fluid two weeks ago and my mechanic, a subaru specialist, told me that my rear rotors were extremely warped, so much so that they could not be machined, a phenomenon he had never seen. Especially considering that the rotors were only two years old.
The other odd thing is that, this doesn't just happen in the winter. It happens all year round. So it's not just a cold thing. I've had the master cylinder checked and apparently there are no issues there.
The only thing I can think of is that for some reason my tranny isn't shifting into neutral when at a complete stop. I'm not sure if it's even supposed to do that but I can tell you that once it's warmed up, the car has the ability to stop better, but it still needs to be tossed into neutral if I need to stop quickly, like a panic stop.
SO i'm at a loss as to how to procede. Advice would be preferable, but opinions would be useful.
Thanks in advance,