What does a brake sensor do?

My f150 makes a grinding noise when i push on the gas? Can you use 10w30 oil in a lawn mower that takes sae30? What could be the reason for a clunking sound in the right front end of the car while making left turns even when the axles are found to be fine? When did power steering become standard on cars? What is a clutch safety switch? How do you replace the brake pads on a 2004 Dodge Durango limited with anti lock brakes? What are the vehicles that fit L34631 oil filter? Flywheel in internal-combustion engine? Need info on installing heat shield or insulating starter for a 350 GM motor How do you keep the solenoid from arcing against the motor and shorting out the battery? Why is my car not taking recommended amount of coolant? Where does cabin filter goes for 1997 villager? I changed my timing chain because it broke and had the timing lined up and new spark plug and wires and car still wont run it fires but wont run Its a 1991 Olds cutlass supreme? What is the problem when you get sparks at the positive terminal of the battery when you try to start your tractor though the starter does not turn over and the tractor does not start? How do you replace a battery on a 2000 Porsche Boxster? What should you do with used motor oil? How do you get into your 2001 BMW 530i with a completely dead battery? What causes a clicking noise from drive wheels when accelerating? My 2006 dodge magnum is making a ticking sound? What is the correct timing order for a 1979 F150 302 engine is it different then the 351 winsor? Is hand-painted hyphenated?