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Mystery Noise 

 

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 Post subject: Re: Mystery Noise
Posted: Fri Apr 23, 2010 2:17 pm 
Fordmods Junkie
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Ride: EL Fairmont, VFR400 racer

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VIC, Australia

You said it happens when you slow down and when stopped...could be brakes as well.

Since all the force is moving forward while braking something may move in the rear, as you stop the car settles and makes the noise again. Rear calipers might be moving slightly or even vibrate.

since you said it sounds like a rattle, I'd say exhaust hitting something. Check your rubber mounts at the rear half of the exhaust to see if it is sagging. If there is a bit of sag, that could make the rear half touch the rear axle as the car sits even.

 

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 Post subject: Re: Mystery Noise
Posted: Fri Apr 23, 2010 2:21 pm 
Tyre Shredder
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Does the noise happen continuosly or does it do it a couple of times and eventualy stop?
To check bushes and control arms, get a pry bar or large screwdriver and apply up down and sideways pressure around the bushes. There should be no pronounced movement between the bush and its mounting point.
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 Post subject: Re: Mystery Noise
Posted: Fri Apr 23, 2010 2:29 pm 
Stock as a Rock
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nalane wrote:
Does the noise happen continuosly or does it do it a couple of times and eventualy stop?
To check bushes and control arms, get a pry bar or large screwdriver and apply up down and sideways pressure around the bushes. There should be no pronounced movement between the bush and its mounting point.


It happens continuously. The longer you've been driving the worse it gets.

 

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 Post subject: Re: Mystery Noise
Posted: Fri Apr 23, 2010 9:01 pm 
Parts Gopher
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QLD, Australia

has it got a towbar by chance??? :roll:
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 Post subject: Re: Mystery Noise
Posted: Sat Apr 24, 2010 4:07 am 
Fordmods Junkie
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I had something similar long time ago in my EL...

Was the LSD seizing up as you were slowing and coming to a stop. Only happened in drive when there was load on the drivetrain.

Cost was a new LSD.
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 Post subject: Re: Mystery Noise
Posted: Sat Apr 24, 2010 8:57 am 
Stock as a Rock
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xcbest wrote:
has it got a towbar by chance??? :roll:


Nope, no towbar

 

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 Post subject: Re: Mystery Noise
Posted: Sat Apr 24, 2010 8:59 am 
Stock as a Rock
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arm79 wrote:
I had something similar long time ago in my EL...

Was the LSD seizing up as you were slowing and coming to a stop. Only happened in drive when there was load on the drivetrain.

Cost was a new LSD.


I only have a single spinner, but if it is the diff it would be a good excuse to put in a lsd

 

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 Post subject: Re: Mystery Noise
Posted: Sun Apr 25, 2010 5:11 pm 
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So I feel like a bit of an idiot doubting my mechanic, but yeah.... he was right. I took the falcon out for a spin today and when the noise started, squeezed under and examined. I can't see which part of the exhaust is vibrating against the chassis but it definetly is. So I'm guessing the soloution is new engine mounts. They'd help eliminate the vibrating right? How much should I expect to pay for them? and Should I get them from ford or is it alright to get non-genuine ones elsewhere?

 

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