Help!

aspect · Post by **aspect** » Mon May 17, 2004 12:19 am

When turning, I get a whum-whum-whum-whum noise coming from the wheel on the outside of the turn. The noise is definatly worse at higher speeds or when accelerating, and is slighty different depending on which direction you turn. I also have a fair amount of steering wheel vibration when on the highway.

Cv joints arn't leaking any grease. I've also taken a look under the car and havn't seen anything that's visibly rubbing anywhere.

What the F@#k is wrong with my front end? Rotors? Brakes? something I havn't though of? Suggestions please!

Brat4by4 · Post by **Brat4by4** » Mon May 17, 2004 12:35 am

wheel bearing

aspect · Post by **aspect** » Mon May 17, 2004 12:49 am

Would one bearing give me that sound in both directions? Cos I just had one replaced...

aspect · Post by **aspect** » Mon May 17, 2004 5:07 am

K I just jacked up the car and shook the wheels like crazy, doesn't seem to be any play in them...

????

entirelyturbo · Post by **entirelyturbo** » Mon May 17, 2004 3:09 pm

Oh boy, I actually have a slightly similar sound from my LF wheel in a long sweeping right-hander... I wonder if my oh-so-not-gentle hammering of my old wheelstuds out of the hub may have damaged it...

mTk · Post by **mTk** » Mon May 17, 2004 4:48 pm

Try rotating the tires to see if the problem changes any.

MK

Brat4by4 · Post by **Brat4by4** » Mon May 17, 2004 6:03 pm

actually, check to make sure your lug nuts are tight. a loose wheel will start to make lots of noise. so that kind of goes hand in hand with what mtk said.

aspect · Post by **aspect** » Tue May 18, 2004 2:34 am

yeah it actually sounds a bit like a loose lug
I've checked them many times though

I'm going to a rally soon, need to get this sorted =(

I may be forced to pay a shop to look at it and hope they don't screw me over.

vrg3 · Post by **vrg3** » Tue May 18, 2004 5:27 am

Have you had a loose lug before?

Sometimes a loose lug nut can slowly round out the lug hole in the wheel, which can make it impossible to properly tighten the lug nut. This is more likely with alloy wheels, since the steel of the lug stud is harder than the aluminum of the wheel.

evolutionmovement · Post by **evolutionmovement** » Tue May 18, 2004 5:37 am

I had to replace a steel wheel when Detroit roads loosened one up. I was doing somewhere around 110 on the Logde FWY when I heard this banging from the rear. What the hell is that? Didn't stop me from going to my ex's college 10 miles away, I'll tell you h-what. Trying to find Subaru parts in Detroit then, I might as well have been asking for parts to a Trabant.

Steve

aspect · Post by **aspect** » Tue May 18, 2004 6:31 am

yeah, ive had a loose lug or two.

Just rotated the wheels front-to-back and used a little hammer to tap the brake dust shields back a bit just to make sure there's lots of clearance. Will take it for a spin and see...

aspect · Post by **aspect** » Tue May 18, 2004 8:10 am

Nope, exactly the same =(

Is it possible the tierods are pushing on the dust shields and making them rub on the rotors?

I donno, I am totally at a loss.

vrg3 · Post by **vrg3** » Tue May 18, 2004 8:12 am

Have you tried raising the front end of the car and rotating the wheels (in opposite directions) by hand to see if you can localize it by ear?

aspect · Post by **aspect** » Tue May 18, 2004 8:33 am

Hrm, not being terribly well-versed in the operation of the drivetrain, I usually avoid applying force to any of the wheels. Spinning the fronts with the transmission in neutral and the rears on the ground should be fine?

vrg3 · Post by **vrg3** » Tue May 18, 2004 3:25 pm

You have a 5MT, right?

As long as you spin the front wheels in opposite directions (you'll notice that turning one wheel will automatically turn the other in the opposite direction anyway), you'll send no torque into the center differential.

If you have a 4EAT, the rear wheels are actually completely disconnected from the fronts when the car is off.

To be completely safe, chock the rear wheels both in front of and behind the wheels, and stay to the side of (not underneath) the vehicle when you first rotate the wheels. Then, when you're confident you're not going to force the car to drive off its jackstands, you can get under the car and try to find the source of the noise. If the car's properly supported by jackstands a friend should be able to get inside to turn the steering wheel.

aspect · Post by **aspect** » Tue May 18, 2004 8:24 pm

Yeah it's a 5mt. I'll give that a try when I get home. If I cant track it down, is there any reason why putting the car on four jacks and spinning the wheels up to speed with the engine is a bad idea?

vrg3 · Post by **vrg3** » Tue May 18, 2004 8:44 pm

If you mean four jackstands, there should be no problem as long as you're gentle with the engine (you don't want it rocking on its mounts) and you make sure nothing touches any of the wheels.

You shouldn't need to use the throttle, I don't think... idle in 4th or 5th gear ought to be fast enough.

aspect · Post by **aspect** » Tue May 18, 2004 10:41 pm

Haha, yeah jackstands. Jacks are sketchy....

vrg3 · Post by **vrg3** » Wed May 19, 2004 3:10 am

Yeah.

When my brother was young(er) and stupid(er), he and his friend once decided to work under his friend's lowered (maybe two or three inches of ground clearance) MkIV Supra after raising it with two factory scissors jacks... Not a minute after they got out from underneath it, it fell off the jacks. It's amazing they didn't both die that night.

greg donovan · Post by **greg donovan** » Wed May 19, 2004 4:50 am

when you have the wheels up be sure to grab them and "shake" them and check for excessive play. also check the torque on the main axle nut. that will show up sounding like a loose lug nut or a bad wheel bearing. but if that is loose you will probably need to replace the wheel bearing soon.

aspect · Post by **aspect** » Thu May 20, 2004 6:15 am

k lifted the car, spun the wheels..no noise =(
The speedo really does go past 220km/hr tho =D

I'm taking it to my ninja mechanic to get some IC pipes TIG'd up and some skidplates made on friday, I'll get him to inspect it...

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