Khalil ... 4/1/2013
1991 Lexus LS400 Base 8 Cyl 4.00L
It started by having to pump the brake before I slow down or stop, then even when stoping the brake will just go down an
took the car to two repair shops, one was so sure that the brake master cylinder must be changed, the other said there may be air buble in the system or leakage or also the master cylinder?
Sorry, I can't provide any answer to your question as I am having the same problem.