My father is on the road as I type this with a problem that just came up. The brake pedal got hard and the brake light comes on when he applies the brakes but goes out after it returns all the way. Any suggestions on what it could be. He said that it will stop, he just needs to be real careful.
My '96 f350 7.3 did the same thing. It was working fine I drove to the store then came out and the brake was hard. Then it was fine then hard again......turned out to be my vacuum pump. $100 fix now it brakes fine.
Hope this helps!
It sounds like the vacuum boost is missing; he needs to stop, turn off the engine, press ******* the brake pedal and note whether it sinks a little once the ngine is running.
If it does, then the vacuum motor for the brake boost is OK; if not - I have no other answers.
If it has ABS and it has failed, there would be a specific warning light for that, one you see when first turning the ignition on along with the other warning lights.
http://howtobyme.blogspot.com/2011/12/sometimes-abs-light-comes-on-while.html
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Brake Fade Issue?
http://whoisbyme.blogspot.in/2012/07/brake-fade-issue.html
Brake System Troubleshooting?
http://technoanswers.blogspot.com/2011/11/brake-system-troubleshooting.html
Car Brake lines have no pressure?
http://schematicsdiagram.blogspot.com/2011/12/car-brake-lines-have-no-pressure.html
Car Brakes Dragging?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-dragging.html
Car Brakes grabbing?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-grabbing.html
Car Brakes Making Noise?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-making-noise.html
Car Brakes Pulling?
http://repairhelpcenter.blogspot.com/2011/12/car-brakes-pulling.html
Pulsating Brake Pedal?
http://repairhelpcenter.blogspot.com/2011/12/pulsating-brake-pedal.html
Spongy brake pedal?
http://repairhelpcenter.blogspot.com/2011/12/spongy-brake-pedal.html
Hard Brake Pedal?
http://repairhelpcenter.blogspot.com/2011/12/hard-brake-pedal.html
Fading Sinking Brake pedal?
http://whoisbyme.blogspot.in/2012/06/fading-sinking-brake-pedal.html
Brakes make Grinding noise?
http://repairhelpcenter.blogspot.in/2012/06/toyota-corolla-brakes-make-grinding.html
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These will help.
thanks.
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The ABS light is not on at all. The brake light comes on only when the brakes are applied. Once the pedal returns to its orignal placement the light goes off. Thanks for all the input sofar I will pass it on to him. Please keep the ideas coming. I hope to have more information tomorrow once he reaches his destination. He is in the area of I-75 and the Kentucky line.
I have a 1996 F350 7.3 Power Stroke Diesel that I went out of town in this week end. After leaving it parked for 24 hours, I got in it to return home and the brake peddle was very hard like it had no power assist. After driving for about 10 minutes, all seemed normal. I stopped to eat for about 30 minutes and the brake peddle was very hard again. After driving again for a little, all seemed normal again. Please help me as I am disabled and this is very dangerous. Thanks Charles
Is the indicator the ABS light? need more detailed information please
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