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Identifying a bad CV joint
Posted 12 February 2012 - 06:00 PM
I've got a CV sounding click coming from up front when decent torque is applied such as starting on a steep hill. I don't see any torn boots. Is there a way to figure out which axle is bad? I'd rather not replace both if I don't have to.
Posted 12 February 2012 - 07:19 PM
Posted 12 February 2012 - 07:30 PM
Good chance that the axles are just worn out. I would buy a new set of EMPI axles for it.
Posted 12 February 2012 - 07:34 PM
Posted 12 February 2012 - 09:58 PM
It reminds me of how bad u-joints in driveshafts sound. I know there is a drive shaft on this with a couple of u-joints, but they hardly ever see any load so I'm not inclined to suspect them. I'm happy to replace the axles, but I can't do it until I get paid and they will have to be shipped to me, so we're talking two weeks that I'll need to drive this to and from work (70 miles round trip)
I've driven on plenty a worn CV that clicked in the turns but didn't going straight. Here's the opposite situation, they don't click in the turns (maybe sometimes, lightly) but will going straight. And then there's the growlish noise. Thoughts?
Posted 12 February 2012 - 11:24 PM
To check the u-joints - when driving in a straight line - engage the 4WD and see if the noise changes.
Posted 13 February 2012 - 01:56 AM
I forget, you can check those by jacking up the suspect wheel and giving her a shake eh?
Posted 13 February 2012 - 09:32 AM
noise in turns - outer CV joint
I've driven on plenty a worn CV that clicked in the turns but didn't going straight. Here's the opposite situation, they don't click in the turns (maybe sometimes, lightly) but will going straight.
noise/vibrations under load while moving forward - inner DOJ
so what you're describing is classic DOJ symptoms. but of course it could be something else as well.
temp guns help isolate bad wheel bearings. after driving, if one is notably hotter then it's bad.
the inner DOJ's also "feel" inner sometimes, like you can tell it's not on the outside (bearing/outer CV) of the vehicle, but closer to the trans. if you have any sense about it being outer or inner that might help.
if it turns out to be a CV - someone on the subaruxt.com forum (he's a member here too but rarely see him here), has taken both axles apart and swapped parts for an essentially free - or 'cost of boots' repair - i'm not sure which ones but there's a rotation of sorts since they tend to wear in a particular pattern - swapping parts gives them fresh surfaces to work with. the board is currently cracking out for me and not populating the webpage properly but not sure if it'll do that for you but here's his thread about it:
driveshaft ujoints do fail and tend to vibrate under load and are worse at certain speeds. sometimes you can simply grab the driveshaft and shake it and notice play. sometimes the joint is seized so it seems tight on the vehicle, but off it's obviously seized and doesn't have proper articulation. sometimes you acn visually see issues with the joint too - like it's offset improperly, clean shiney metal showing, etc. having a look and shaking the shaft might be worth a couple minutes.
Posted 13 February 2012 - 11:48 AM
I remember this night a few weeks back when I got this whistling from the right side. nothing I could do with the car would make it go away except for a soft left turn.
Classic wheel bearing.
You may not feel any play in the bearings - you can check but remember to disengage the parking brake when you check since it's on the front calipers.
Posted 13 February 2012 - 05:40 PM
The noise was bad enough on the way into work this morning that I'm taking it off the road until I have the time/money to fix it. If it's just wheel bearings, I'm hoping that I haven't smashed the bearing seat out of round!
I'll do some searching, but I'm imagining that I'm gonna need the inner and outer bearings and the appropriate seals. I don't have a press so I'll probably pull the hubs and take them to a shop and have them replace them for me.
Thanks for the link Gary, I'll check it out.
Posted 13 February 2012 - 05:49 PM
Posted 13 February 2012 - 07:06 PM
Posted 13 February 2012 - 08:33 PM
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