Clunking noise coming from the back

[ft_86]

So ever since I replaced my tires with michelin primacy tires and installed wheel locks, I have had a clunking noise coming from the back. Every time I'm going 5-15 mph, I keep hearing the noise, especially when I'm going over uneven surfaces. When the car jerks a little, shifting gears, I hear it, but its even louder when I'm going over uneven surfaces or making a turn. Anyone else have this problem as well?

[humfrz]

Originally Posted by ft_86

So ever since I replaced my tires with michelin primacy tires and installed wheel locks, I have had a clunking noise coming from the back. Every time I'm going 5-15 mph, I keep hearing the noise, especially when I'm going over uneven surfaces. When the car jerks a little, shifting gears, I hear it, but its even louder when I'm going over uneven surfaces or making a turn. Anyone else have this problem as well?

Welcome to ......the forum...... @ft_86 ........

The first thing I would do would be to re-torque all the lug nuts (the wheel locking lugs should be the first ones off and the last ones on).

Next I would suggest you check in the trunk to make sure the jack and any other stuff is secured.

If that doesn't fix it, I'd suggest you take it back to the shop that changed out your tires and have then take a look see.


humfrz

[strat61caster]

In addition to what @humfrz said it could also be a loose axle nut, they are made of soft material and can slip and deform over time, re-torque can solve the noise for a time but new nuts are cheap, the trick is that it's a 32mm so odds are you don't have that socket lying around.

Similar threads:
http://www.ft86club.com/forums/showt...92#post2414992
http://www.ft86club.com/forums/showt...50#post2389950
http://www.ft86club.com/forums/showthread.php?p=2349274

DIY's
http://www.ft86club.com/forums/showthread.php?p=1194267
http://www.ft86club.com/forums/showthread.php?t=46137

Worst case the axle is about to fail:
http://www.ft86club.com/forums/showp...3&postcount=13

Mine is clicking right now too, going to see if I can get some axle nuts for this weekend now that you've reminded me...

[ft_86]

Thanks for the links.
I did a bit of researching online and found that a bad ball joint may be causing the issue.

For most people, the first indication that they have a problem with their ball joints is a faint, intermittent banging sound that seems to be coming from a corner of the vehicle. This sound is usually more pronounced when going over a bump or dip, or when going around a corner. This is not the same as the clicking sound made by worn CV joints (constant-velocity joints) when going around corners. This sound is more like somebody hitting a piece of the metal structure with a hammer.

As time goes on, this sound becomes louder and more frequent. It is especially pronounced when the weight of the vehicle is transferred off and onto the wheel, such as when driving through a pothole. Left long enough, the sound of a worn ball joint can become a loud, creaking bang, similar to the sound of the bottom of the car hitting the ground.

The noise that they're describing certainly sounds like what is happening to me, especially the part that says that the sound is louder when going over a bump, dip, or going around a corner.
Going to the dealer on Saturday to check(or replace) the axle nut since its covered under powertrain warranty.

[N1rve]

I test drove a Certified Used Scion FRS at my dealership to replicate noises. It had a clunking in the back, it was because of a blown shock.

Note my words...Certified... They would only replace it once a customer buys it and complains.

[go_a_way1]

Originally Posted by N1rve

I test drove a Certified Used Scion FRS at my dealership to replicate noises. It had a clunking in the back, it was because of a blown shock.

Note my words...Certified... They would only replace it once a customer buys it and complains.

Reason being is that way they can do it under warranty. I work for a dealership I know how it works haha. If the dealership owns the car and they miss it on the first inspection then they have to wait for a customer to buy it and complain other wise they won't get warranty money for it. A lot of. Batteries go on the lot in new cars where I work and we have to wait till a customer buys it before we can put a new battery in and deliver the car/truck. Its really stupid if you ask me.

[N1rve]

Originally Posted by go_a_way1

Reason being is that way they can do it under warranty. I work for a dealership I know how it works haha. If the dealership owns the car and they miss it on the first inspection then they have to wait for a customer to buy it and complain other wise they won't get warranty money for it. A lot of. Batteries go on the lot in new cars where I work and we have to wait till a customer buys it before we can put a new battery in and deliver the car/truck. Its really stupid if you ask me.

Yeah... I have no idea how it'll past the test drive though