I am having a hard time figuring out a soft brake pedal issue. I have already replaced the master cylinder with an OEM part. I have bled the brakes two seperate times. After bleeding the system the brakes have plenty of pressure for a month or so. Then the pedal gets soft again. The master cylinder is full each time, yet I can get some air out of the lines. There are no signs of leaks around the brake calipers or the lines.

 

in the master cylinder, is there a rubber seal?

 

http://techinfo.honda.com/Rjanisis/pubs/SB/B07-041.PDF


You may need to follow the instructions on this page if the direct link doesn't work. https://acurazine.com/forums/3g-tl-2004-2008-93/3g-tl-technical-service-bulletins-tsbs-3g-garage-j-016-a-613659/

This is for TSB 07-041.

 

thanks bearcat, didnt know this.

was working on my car one day last week, and I messed with the master cylinder's rubber seal.
As I went to drive a few days later, my brake pedal went to the floor. I knew I had air in the lines.

the rubber seal had become too large, looked like the pressure enlarged it, and it wouldnt sit correctly.

I ordered a new one, should be here any day.
Also, I jacked up the car and took off all the brake lines as I'm anticipating SS lines from excelerate.

At least, I know about the TSB, if my troubles dont stop.

 

The seal is fine. I have found out that the VSA modulator has given some of the 05/06 TLs problems by letting air into the system. Who knows?

 

yes, that is what the TSB stated.