Hey Scotty! I just replaced the front rotors on my 2002 Camry 2.4L with 199k miles, and now my brake pedal is sinking to the floor every time I brake (old ones were after market and already had over 50k miles on them and were causing a shake when braking at high speed). I have checked the brake fluid reservoir, the caliper hoses, and the rotors themselves, and they seem to be properly installed. I though it would go away after driving for a bit, but I've already driven well over 50 miles and it's still happening, any idea on what it could be? Thanks!
Something is causing your brake pedal to sink, and it's not supposed to. The brakes should always remain firm. You have a leak somewhere. Look on the ground for leaks. If none are there, your brake master cylinder is leaking internally, or your ABS module is leaking internally. A leaking ABS module doesn't tend to happen on Toyotas, though.
Do you think an outside leak or an internal brake master cylinder leak happens overnight? Because my brakes felt super firm before. It wasn't until I changed the rotors that it suddenly started sinking to the floor (btw forgot to point out that my specific Camry doesn't have ABS).
Did you spot any leaks? It can happen overnight. My 1999 Ranger's brake line went out as soon as I started up, once. I hit the brakes to move the shifter column and it sank right away.
No, I didn't spot any leaks, and my brake fluid reservoir is still on the same level as it was before I changed them. I thought maybe I had twisted the brake hoses going to the reservoir and caused more resistance but they are both straight like they were before.
Master cylinder leaks can happen suddenly, it happened earlier this summer with my '86 Saab. One day I just got in it and the pedal sank to the floor. It had been fine with no symptoms the last time I'd driven it. Replacing the master cylinder with a new one fixed the problem. (I had replaced the master cylinder previously but it was about 20 years ago so I can't really complain.)