i was comming home today and noticed it is very hard to press the break peddle.

did the break celynoid just go out?

or is there someting that i can look for first?

they break light is on. but nothing on the computer codes. i am wondering of that is out on it

1990 xj6 soverion with only 38,000 miles
the 4.0 l engine in this one.

any help will be greatly appreciated

 

Your brake master might need to be repaired , mine did the same almost . When I pressed the pedal it was hardly being released plus was very hard to press sometimes .

 

Hi, When you say the brake warnng light is on, which one do you mean?

Press the VCM button to view the message.

Basic Test for boost pressure.

Engine off.
Press brake pedal 4 to 5 times to lose the vacuum.
Hold pedal down and start engine.
You should feel the pedal give a little.
Release pedal and let the car run for a few minutes.
Switch off.
Press pedal, you should hear a hiss type sound.
Repeat 1 above, the pedal should now be harder.

There are a couple of inline fuses above the Inertia switch (situated behind the left footwell kick panel).

Post up your findings.

 

My first guess would be the accumulator ball.

 

question.....when I do the above directions and pump up the pedal, it appears pumped up pretty much already even before the car is started. Then with my foot on the brake pedal, I start the car and the pedal does not go down at all. I get "anti-lock failure" and "low brake pressure" on the VCM. Any clues?