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The mkiv Supra Owners Club

strange noises


Kaamos

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Hi

 

Since a couple of days I am having a whole bunch of weird noises coming from the back. As they all appeared together I made the assumption thay they are somehow related to one another.

 

noise 1

 

appears : all the time, at each wheel spin

description : high-pitched ticking sound occuring at each wheel spin (the faster the driving, the faster the ticking), forward and reverse, D or N (Auto gearbox). Seems to be there regardless to the speed except beyond a certain speed I can't hear it anymore because it's covered by engine and tire-roll.

cause : comes from rear passenger wheel. Upon inspection I noticed that some "pin" of the brake-pad simply isn't there anymore (red-circled part in pic 1, taken from rear driver side).

pic1.jpg

 

as a consequence, at each wheel spin, I see the part of the pad circled in green in pic 2 moving up and down at each TICK sound, showing the whole pad is a bit loose.

pic2.jpg

 

Is it posible to order thoses pins alone or do I have to get new pads with all the fitting stuff ? my pads seem to have a fairly long amount of life still on them :)

 

 

noise 2

 

appears : after highway ride, only when driving slow (about 20mph or less)

description : lower-pitched and MUCH louder CLONK noise, still coming from the rear (passenger) area (?) causing light, still noticeabble vibration in the seat

cause : perhaps a friction > heat > dilatation issue related to noise #1 ?

sidenote : it seems weird to me but this sound sometimes happens only when turning right, sometimes only when turning left, and sometimes is constant when driving slow after a highway period..... then when I park and let the car cool down for a while the noise disappears.

 

 

noise 3

 

I think this one has lesser links with previous issues but, still....

 

appears : after having driven for 0.5hr+ when heat builds up, when on throttle at given engine speeds-not always the same (disappears when off-throttle, disappears after cooling-down).

description : lower-pitched machine-gun-like sound coming from the rear causing light, still noticeable vibration in the seat

cause : perhaps a friction > heat > dilatation issue related to noise #1 ?

and/or silentbloc problem as the exhaust seems to be a bit close to rear passenger triangle.... ? (rattleing noise while slow-driving on bumpy roads tend to make me think the exhaus is a bit loose as well)

 

Thanks in advance for your help, I want my quiet supe back haha

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Thank you for your hints.

 

In the meantime I made 2 small (not very exciting) videos to show the problem..... about noise #2, shooting them made me find out that if I don't use the brake (IE let the car slow down to stop in neutral or use handbrake), the loud cracking noise almost disappears....

here are the fantastic shaky movies :

 

-low-speed city cruise, there's also a bit of noise #3 after the 1st turn in the 1st video

https://vimeo.com/99535699

 

 

-some indoor parking stop-and-go's with windows donwn, no metal plates on the ground whatsoever, all you can hear comes from the car

https://vimeo.com/99535702

 

 

This is a loud supra, but not the way you'd expect it to be :/

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