BRAKES DRAGGING !@$%
Replaced the following OEM, brakes, calipers, brake clips, lines, master cylinder, checked amd valves are great, the only two things that are left is the proportionary valve or the brake pedal pin Etc. I have 02 Honda Civic I don't have abs. can drive the car for 3 minutes and the brakes lock up I can relieve the pressure from the brake bleeder (tells me that the caliper and brakes are good) then im back on the road for another 5 or 10 minutes then the same thing 😔😔😔
Thx
QUESTION.. aside from burning the car which I'm about one or two steps away would anyone suggest something that makes sense and is logical
NOTE: There are maybe 2 things left that I can check, In route to go and get them locked again to try something else, if you or you know anyone that has experienced this exact issue please let me know what options I have left thank you

I've been trying to fix this for the past 3 months now exhausted and weary

 

Sometimes the master cylinder and booster are not matched. The (FSM) Helms manual I have shows to check the rod length before installing the new master cylinder. Sounds like the Booster's push pin is too long and is not allowing the master cylinder to release pressure, so it just keeps building and building up. Does the number on the side of the master cylinder match the number on the side of the old one?

I swapped out a booster on my car once, and missed the keeper pin going through the brake pedal. (it was behind it instead) This kept the brake pedal from completely releasing by a half inch, and gave similar results of the brakes locking up.

 

I don't have a FSM for a 2002 Civic, and the only FSM I have on my computer is for a '06 pilot. There is a note after replacing the master cylinder to:

So look for a FSM for your '02 civic and see if there are any end notes. There might be a Check brake pedal height note like there is for the pilot that makes a difference.

 

You seem to eliminated many things, so we need more test and observation to tell where this is coming from.

Can you perform this check, so that the members can give more specific advise

1. Removes the entire brake caliper, so that you can press the piston
2. Press the brake pedal (inside the car). Maybe 3-5 times, but don't push the entire piston out
3. Uses tool to press the piston back into the caliper

Tell us whether:
1. the piston is moving out in #2
2. how easy to press the piston back