so i got my 00 py itr up and running and it seems as if my maser cylinder or brake booster is going out. my car jumps at idle when pressing the brakes as well. they feel very spongy and go to the floor.
Ive bled my brakes and even bend bleeded the mc and still the same result.
ive dont alot of researching and some say its the mc and some say the boost. i dont wanna take the car to a shop(duhhh), so what do u guys think? im looking for some up to date opinons as i dont wanna have to spend money on parts that arent goin to fix the problem.
THANKS IN ADVANCE guys!!

 

nobody???

 

What do you mean "jumps at idle"?

Bad MC, hydraulic lieak, or air in the lines will typically lead to spongy brake pedal or pedal to the floor.

Bad booster will result in the brake pedal feeling rock hard. Bad boosters will also sometimes make your idle very high.

 

at idle it idles just fine, as soon as i pump the brakes my idle goes up about 500 or so rpms.

 

It's normal for the rpm to change a little when you work the pedal.

I would say it's bad MC. Usually when it starts getting warm out, internal piston leaks start to show them selves as a mushy pedal. The problem can come and go as the weather changes. It's typically caused by fluid blowing past the piston seal and back up into the reservoir so you won't find a visible external leak. In bad cases you can actually watch the fluid level rise and fall as someone else pumps the brakes to the floor and back for you...

I've personally experienced this problem on 3 different Hondas.

 

Im leaning towards MC.

 

check your calipers, if they're oily and have grime, than you could have leak in the piston seals inside the caliper.

Push in the brake > fluid leaks > brake pedal comes back up > pulls in air.

 

problem was fixed with a new brake line, there was a small hole in one of the front lines.