Question about 1992 Ford F250
My abs and brake light wont go out on my 1992 ford f250 could my master cylinder cause this i already changed my abs censor on the rear end and lights still stay on i already disconnected my battery for 15 min. but that did not work can you help me thanks
When u power up the vehicle ABS does a self test(light stays on a few seconds then cuts off) and if it see's a problem will shut off and illuminate the ABS lamp. It will also do a second test on iself when you reach a speed of around 12-15 mph,it will run the pump for a few seconds to check pressure and look at the speed sensors,if it see a problem here it will again shut down and illuminate the ABS light.
Now if the red brake lamp is on then it will shut down because it thinks you have a hydraulic concern and will not try and run ABS if this is the case.
If red brake lamp is on most likely if you have good brakes it is a problem with the float sensor in the master cylinder reservior,maybe its bad or just stuck,or just low on fluid.
Posted on Feb 12, 2009
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