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Hy! i have just joined the forum, and i have a problem with my brakes...
I have a '93 Accord Coupe with disc rear brakes but it does not work. At all...
I took apart both calipers, cleaned everything, the piston slides pretty easy. the fluid is not leaking. the front is okey but at the back it still nothing. My handbrake also is useless, it can fix the car but that is all.
I think the problem is with my brake master cylinder, but correct me
it has ABS if it influences...
THANKS!!
Yes, it does. But the weird thing is that the brake can not be hard when the engine is running. That is why i think, the problem is with the main master cylinder... and the oil is not leaking anywhere. there are no bubbles when we bleed the rear system. but if the master cylinder is bad, than it could not move the pistons or i do not know...
Update...
I used The handbrake a lot down the hills and it seems that discs are much more clean. And because of the piston is mowing mechanically when i use the handbrake. The problem is with the oil system i think.
Does anyone know what the dual proportioning valve does? Does it control the power between the front and the back somehow? Can it cause that there is no brake pressure at the rear wheels?
the rear brake challenge is still not completed...
I bought new pairs of rear brake pads and i resurfaced the discs, changed the inside of the callipers (rubber things) replaced everything but still nothing. As i mentioned before, can the dual proportioning valve cause the problem? Front is okey but it is not healthy to use only the front. Or should i bleed the whole system first? And what about the ABS? Does it influence only the rear brakes? I am so lost in this now... I do not know where to start. I would appreciate some useful advice...
I painted the whole calliper black but it still does not works :D
u probably need to adjust the leveler that is under the center console. and check the cables under the car and at the caliper
If I read the whole thread correctly, I think that he is having problems with the normal operation of the rear brakes, plus also with the emergency brake, and not just with the emergency brake.
Princetom - it sounds like you replaced the rubber bellows/boots on the ends of the sliding pins. Do the sliding pins move easily? When were they last greased? Also, is the whole brake system original, or were things added? What I'm getting at, is are the rear disk brakes original to the car, or were they an upgrade? If they were an upgrade (from rear drums to disc brakes), then I've rear that you need to make sure that the proportion valve was also changed - I believe that everyone suggests a 4040 valve. There is a lot of upgrade info in the thread https://honda-tech.com/suspension-br...egras-3044628/ which is at the top of the brake/suspension forum which may be helpful. Also, has the car had this issue for a long time, or did it just start having the problem? - Jim
You are right i have problem with the e-brake and the normal brake operation as well...
It is problem since i have bought the car, tried to fix it but nothing worked. My accord has originally disc brake at the rear and nothing has been upgraded. Original disc and calliper.
It was greased a week ago when i changed the rubber things, it was clean as a new one. But i had no o rings on the pins, but the pins and the piston as well slide smooth. Could it be the problem?
I think i have original proportioning valve.
I checked, and for a 93 Accord 2dr EX with a KA5MT (but I'm not sure exactly what trim model and trans you have), the rear brakes per Honda Automotive Parts don't have any rubber bushing on one of the sliding pins like some other models do. So when you bleed the rear brakes with the engine off, do you get a good amount of fluid coming out? When you mention that 'But the weird thing is that the brake can not be hard when the engine is running', are you saying that the pedal is soft/mushy with the engine on, or does the pedal slowly sink all of the way to the floor? It seems strange that if the master cylinder (or maybe the booster) is bad, that it would affect only the rear brakes, and not the front. If you have someone to help you, then it would be interesting to have the rear of the car on jackstands, and with the engine off, to spin each rear wheel and have someone press the brake pedal to see how well each of the rear brakes are working - maybe there is a problem with just one of the calipers instead of with both of them. Good luck!! - Jim
a little update...
my brakes, rear brakes, e-brake can work properly. if the e brake is loosen up, and i pump the pedal couple of times. after that i tight the e-brake mount as it is ordered. the brakes will be perfect and the handbrake can slide the car even on tarmac.
BUT! As the time is passing, the brakes are getting softer and softer so the ebrake.
the brake fluid does not leaking. Can the abs system influence the brake system? or can somebody tell me something about it?
sincerelly...
03-11-2015, 11:27 AM
4gen Accord rear disc brake problems
