560SEC brakes come on while driving

[jordanlott]

Hi,
I own a great 1989 560SEC which i use as my main car now even though I own a couple of fantastic SAAB 9000´s.
It runs great but the brakes come on after a few minutes of driving. I can still drive but the front disks start to overheat.
The rear ones come on to. I have removed the wheel and the calipers release easy enough when pushed back so it does not seem to be a pipe blockage problem. Some times when I restart the engine the brakes release for a while but then come back on.Some times they release on thier own while driving.

Two issues that might give a clue;
The only other brake issue is that some mornings the pedal travels nearly to the floor before working but then pumps up quickly.
The three warning lights for ABS SRS and ( I forget the other initials ) sometimes come on shortly after starting and if I restart they go off.

It must be electrical I feel. Anybody got ant Ideas???
Thanks
Jordan

 

[television]

A low battery when you start will put the ABS lamps on, thats why a restart clears them.

Re the brakes, the servo or master cylinder must be faulty that is the only way your brakes could come on.

 

[42864]

I had exactly the same problem many years ago with a Vauxhall Ventura (mid 70's) the Servo is Faulty and needs adjustment, tricky to do as the tolerances are very fine, but the job itself does not take long.

 

[jordanlott]

Thanks for your promt help .
How do you adjust the sevo?
Thanks Jordan.
Its a good thing I have a 5.6 liter to drive with the brakes on or I would not get anywhere...............

 

[42864]

Jordan, ---Re; Adjusting the Servo, sorry I haven't a clue, I know that when mine went it was taken to the main dealers and fixed within the hour, I believe something to do with the push rod from the Master Cylinder to the Servo but I could and may well be wrong on that one. Sorry that I can't be more help.