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14-08-2010, 03:44 PM
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Starter Motor
Join Date: Mar 2010
Posts: 28
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The front left wheel shakes under brakes, I've had a look under there and I can't see anything that's obviously worn.
The rotor doesn't seem to be warped and the brake pads look ok. Would it have anything to do with the bushes on the A arm? I'm not familiar with the hydro bushes. It's a 1997 Mondeo Wagon. |
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14-08-2010, 04:00 PM
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Just another mock-up..
Join Date: Sep 2006
Location: In an AU Fairlane somewhere...
Posts: 9,966
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could it possibly need a balance...?
might sound stupid, but, you may have lost one of the weights off the rim and that is causing the vibration... Does it happen when braking from a higher speed or at all speeds...?
__________________
Desire isn't driven by the heart, the mind or the wallet. Desire comes from another place. It's created by the smell of burnt fuel under full throttle and the look a car gives you when you're washing it alone at night... see my car here: Built my own TL50!!! [SIGPIC][/SIGPIC]
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14-08-2010, 07:35 PM
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Fixing Ford's **** ups
Join Date: Feb 2009
Location: In a house
Posts: 4,759
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How are you sure it's the left front wheel and not both? Have you clipped a gutter or something?
You won't notice a warped rotor by the naked eye. Seeing as it's shaking under brakes, that's a good indication your rotors are warped. It's won't have anything to do with wheel balance. So get the rotors machined and go from there
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A wheel alignment fixes everything, when it comes to front end issues. This includes any little noises. Please read the manual carefully, as the these manufacturers spent millions of dollars making sure it is perfect.....Now why are there so many problems with my car, when I follow the instructions to the letter?....Answer, majority rules round here Lock me up and throw away the key because I'm a hoon....I got caught doing 59 in a 60 zone |
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14-08-2010, 09:11 PM
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#4 | ||
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FF.Com.Au Hardcore
Join Date: Oct 2005
Location: Auckland, NZ
Posts: 1,266
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If it only happens when you brake, it's probably a warped rotor caused by a sticking caliper. So I'd suggest that you also get the calliper overhauled, otherwise it will probably just happen again.
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MB Mondeo TDCi wagon, sea grey, on MAK Invidia 16" wheels. |
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14-08-2010, 10:16 PM
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#5 | ||
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Starter Motor
Join Date: Mar 2010
Posts: 28
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The shaking only happens while braking, no other time.
It feels like it's on the left side only. I spun the rotor and could see no run out on the rotor and no discolouration on the braking surface. The caliper clamps and lets go smoothly. |
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15-08-2010, 12:29 AM
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#6 | ||
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Fixing Ford's **** ups
Join Date: Feb 2009
Location: In a house
Posts: 4,759
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Does it pull left under braking?
just because you can't see a runout issue by spinning the rotor doesn't mean it's not warped slightly. It doesn't take much to cause a vibration. I'd strongly suggest getting the rotors machined. That's both, not just one
__________________
A wheel alignment fixes everything, when it comes to front end issues. This includes any little noises. Please read the manual carefully, as the these manufacturers spent millions of dollars making sure it is perfect.....Now why are there so many problems with my car, when I follow the instructions to the letter?....Answer, majority rules round here Lock me up and throw away the key because I'm a hoon....I got caught doing 59 in a 60 zone |
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15-08-2010, 07:06 AM
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#7 | ||
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FF.Com.Au Hardcore
Join Date: Oct 2005
Location: Auckland, NZ
Posts: 1,266
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You won't see the runout, you'd need a dial gauge. It's a common problem - Bendix used to have a good tech note on their website, but I've just had a quick look and can't find it.
__________________
MB Mondeo TDCi wagon, sea grey, on MAK Invidia 16" wheels. |
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17-08-2010, 06:58 PM
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#8 | ||
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Starter Motor
Join Date: Mar 2010
Posts: 28
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That's what I was looking for, information on whether it was a common known problem for these cars. I'm a Mondeo newb.
My other car, a BMW, if you go to the forum and ask about a shaking wheel they'll usually direct you to the strut bar bushes. They cause shaking problems more often than the rotors do. Anywho, I took the right wheel off to have a look and found a tiny bit of runout so I suppose that's the problem. Thanks to all who replied. |
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Wheel shake
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