93 EX Accord
Bought this car about 3 months ago- drove it for a month and it was fine. One day both the BRAKE light and the ABS light came on in the dash. I drove it for about 2 miles until the pedal locked and I could barely stop; took it to a mechanic and he said it was the ABS pump. At that point I could drive the car for 3 days until it locked up (the brakes came on and I could floor it and eventually the car would stop and would not move in drive- BRAKES ARE ON). Once it locked up, it would take about 6 hours for the pressure to release then I could drive it again for 3 days. This went on and I took it into the shop a couple weeks ago- since then, I have replaced the module control (part that the abs reservoir sits on with all the valves) and the master cylinder. The master that goes on the EX (with abs) did not fit because the 2 ports coming off were not the same size; the one that was taken off the car was stock, no one had messed with it- and the 2 ports were the same size. The only master that has the same size ports is the one for the DX (without abs). They are the same except for this one thing. So the DX master is on my EX car. The rod was adjusted and the cyl shimmed out. He has the brake booster but doesn’t see how changing it is going to fix the problem. I also bought the abs pump, but the abs is working fine now. Once the master was changed, it seemed to be fine, it was taken out and driven about 10 miles and didn’t lock up, I let it run for about 10 minutes in the driveway and came back to it and the pedal was hard as a rock. The only way it will release is if you crack the line from the master cylinder. It’s the front brakes, not the back. Once you release the pressure, it will move and drive, but if you put it in drive then into neutral, the car won’t continue to roll, it just stops.
More than a few people (Honda guys too) have looked at this and no one can figure out what the hell is wrong. Any ideas?!!

Thanks.

 

What code did it throw when the light came on?