I have a 1985 300cdt and after the car warms up good the brake pedal starts going to the floor and I have to start pumping the brakes. When the car is cold the brakes work perfect. I have already replaced the brake pads and bled them, and replaced all the fluid. Does anyone have any suggestions?

 

It sounds like you might be losing hydraulic brake fluid pressure. If it were my car, I would perform a brake hydraulic pressure test to make sure the master cylinder seals are not blown, and also check for fluid leaks along all the brake lines and hoses from the master cylinder to the wheels.

When you changed your pads, how did you compress your wheel cylinders?

Charles