When breaking my 2010 ford focus makes a loud knocking noise almost like someone is hitting the underneath of it with a sledge hammer. This happens at speeds of 65mph and higher when braking. It has just started in the past 3 days.
I would pull the wheels and look for something loose on the brakes, such as a spring or self adjuster. Also look at the backing plate to see if it is tight.
Keep in mind it may be something covered by the car's warranty.
SOURCE: 2002 Ford Escort front brake rotors - removal
the first thing i will recomend you, is ti buy the new rotors first,
sisnce you did not mention if you allready have the new ones
and see if they are slide out type rotorss or one piece rotor assy
with the lugn nuts, sometimes they just slide out but sometimes you need to remove the center big nut in order to remove them.
SOURCE: Ford F150 2004 4x4 passenger side rear wheel noises
You can try the bearings but I think if you take off the rear rotors and look at the emergency brakes you'll find the problem. You might want to ride the emergency brake a little in lieu of removing the rotors to confirm the problem. Also some wheel covers make noise-drive without them and see if it helps.
SOURCE: Loud engine knocking on 2001 Ford Focus
Sounds to me like a very common problem has occured to your neighbor. If this is a SOHC engine, one of the valve seats in the number 4 cylinder has fallen out. I'm sure it has damaged the head and the piston. Stop trying to run it or you might blow a hole in the cylinder wall or break a rod or both.
SOURCE: i need a diagram for putting rear brakes on a 2001 ford focus.
look at the otherside, you only do one side at atime.
SOURCE: rear drum brake noise on my 2003 ford focus
either the brakes need to be replaced or there is alot of junk built up inside. Either way rear drums need to be taken off, cleaned and shoes inspected for wear.
Testimonial: "thanks."
606 views
Usually answered in minutes!
×