Is the fluid level droping without it showing up on a wheel. If it is, probably leaking the back of the master cylinder. If the brake pedel pumps up, pump it a couple of times and hold pressure on it. It should slowly push to the floor. If it does, it's the master.
93 Camry fuel filter is right below the brake master cylinder
If you mean the brake master cylinder, then squealing might mean that you have a vacuum leak.
You should do that through the master brake cylinder.
If it only flickers it may be due to low fluid level in the master cylinder. Check your brake fluid reservoir.
When you work on brake system you want to remember to bleed the brake lines.
It's between the battery and the main brake cylinder.
In the clutch master cylinder next to the brake master.
Yes there is. It is located atop the transaxle, visible from an open hood, on the driver's side, almost directly below the brake master cylinder.
one of the two things, master cylinder or portion vavle is gone out
I believe the four cylinder has rear drums and the six has disc brakes.
Should be located at the driver's side firewall
Master cylinder should be located on the driver's side firewall