SMF

Hi,
maybe some of you had similar problem or ideas what is wrong
I have 94 carrera 2
I think that from the beginning I had problem with ABS. No warning light but strong breaking and wheels are locked.

From time to time small action from ABS but at the and always locked.
Today i picked up a car form Bosche service - they cleaned and chcecked resistance of all sensor, they checked computer for errors but everything is fine

Month ago I had wrong sizes of front tyres /215/40/ and warning light turned on - so something is working
Now correct size of tyres. Right now is raining and I made few test from 100 km/h - all the time same result - locked wheels. / of course when is dry there is the same problem .../
any ideas?
Thanks in advance

M.

JFScheck

How are the rotors? I have seen two front warped rotors cause this same issue on an ole' track car of mine...

SMF

ok right now I now ABS Pump or ABS brain... how to check which is wrong...

Geoffrey

You plug a Bosch Hammer or PS2 Tester into the diagnostic port and run the tests. That will show you if there is a problem with any of the 4 wheel speed sensors, any of the 3 or 4 valves (depending on which system you have) in the ABS pump itself, or the alternator, the ignition power, the constant power, the brake light switch, feeds to the ABS brain and the ABS dash warning light.

SMF

According to Bosche service everything is fine... I read itf ABS brain is wrong there want be codes in his memory.... But on other hand ABS brain is somohow working - it noticed wrong size of tyres and came on...