Question about 2006 Ford Focus
2006 Focus-metal to metal knocking sound from the front driver's side comes and goes, but can be silenced by touching brake pedal. The sound will continue when letting off the brake pedal. Knocking sound has been going on for over two years. Over half a dozen mechanics have driven and looked at the car with no answers. Ford dealership said wait until it breaks ( was under warranty at the time ).
Saw your other post and thought you just let it go for 2 years.
did they change the rotors? an imperfection in the rotor can cause it to make a noise, you would think that the first mechanic would have changed out the rotors and pads to rule it out, i doubt it would be the caliper because it is not close enough, did they check the bearing and axle?
Posted on Oct 27, 2012
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Posted on Jan 02, 2017
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.
Posted on Aug 07, 2009
SOURCE: 2005 Ford Escape Hissing sound
The power brake booster has a bad valve. I can't suggest where to find a new valve for it, but you can buy a rebuilt replacement. They are usually not hard to put on.
Posted on Jul 02, 2009
this can be a serious problem, sounds like one of your engine valves, has the car overheated recently? if your valves bent, you need to take the engine apart hope i helped
Posted on Jul 27, 2009
Go to Orielly auto parts and rent their OBD scanner. If you takethe vehicle to them they wont charge you for the scanner. The dealer will charge you $100 or more to check it for you. Depending on how loud the knock is I would not recomend driving the vehicle until you scan it. Once you scan it write down the codes and Oriellys can translate them for you also.
Posted on Sep 28, 2009
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.
Posted on Jul 26, 2012
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