Wheel noise diagnosis?

[Brian O']

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dont think the cv could make the noise your atalking about, i had a small s=
tone get stuck in between my rotor and backing plate once, you think this c=
ould not happen, but it did, and was there for many miles before i knocked =
it out, i thought the front end was falling off the car. maybe your backing=
 plate is bent, and rubbing the rotor, did ya just have the wheels off befo=
re this started ??
                                                                           =
brian o'
93 90q sport
93 100csq
91 80

 Joel Lenorovitz <jlenorovitz at yahoo.com> wrote:Evening everyone,

I was hoping you might be able to help me pinpoint a new and somewhat scary=
 sound
coming from what seems to be the driver side rear wheel on my '95 90Q. It's=
 there
intermittently and the severity ranges from mild to highly disturbing. Here=
's its
MO:

- the noise is a springy clanging, kinda like a spade shovel hitting a rock
- it varies with speed, but the periodicity seems to be faster than one whe=
el
revolution - it's more like two times per wheel revolution.
- when it's there, the noise worsens with additional torque from the motor,=
 but it
can still happen even in neutral while coasting and during braking, forward=
 and
reverse
- it comes on sporadically, stays for a while, and then seems to clear up
completely, especially after resting or right before I get it to the lift a=
t the
shop
- it really seems to be coming from the left wheel side, but I'm not 100% s=
ure

Here are my theories so far:
- stone or something from recent snowstorm caught in brake shroud: makes se=
nse for
the clanginess, but I'm not sure how it could be so regular plus I removed =
wheel and
inspected fairly well
- loose lug nuts: would be plausible, but I've checked and rechecked them
- something in driveshaft: Maybe, but is the shaft spinning ~2x the wheel r=
ate? Why
would the noise be coming mainly from the left and not the center?
- CV joint on left side: seems like a likely culprit

There's still a lot of mystery here so hopefully it either stays away or I =
can
reproduce it when I'm near the shop. Any insight would be greatly appreciat=
ed.

Thanks,
Joel

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