GU wobble

Submitted: Saturday, Feb 19, 2005 at 15:39
ThreadID: 20578 Views:2997 Replies:10 FollowUps:8
This Thread has been Archived
After three wheel alignments, three balances (at different places) and new front wheel bearings (re-checked too) I can't seem to get rid of a wobble that has started to appear at around 95 - 105km/h on my '99 GU wagon with 180,000km's on the clock. Tried rotating tyres again, changes the problem slightly, but still doesn't fix it.

Had new suspension (including steering damper and castor kit) put in it 5,000km's ago and that seemed to bring it on. Hasn't done this in 170,000km's prior. Requested thorough check of all suspension / steeering components at the time of install and apparently all are good.

Cooper AT's are at 70,000km's, but they still seem to balance up OK and have a fair amount of tread left. Are the very expensive 'on vehicle' wheel balances worth the dough ($25 p/w)?

Any suggestions?

Cheers
Back Expand Un-Read 0 Moderator

Reply By: GOB & denny vic member - Saturday, Feb 19, 2005 at 16:28

Saturday, Feb 19, 2005 at 16:28
goodday diesel
a few thousand ks ago i put new tyres on my gu and they viabrated around the ton went back and the rebalanced with a contraption that imitates the brake assembly etc 1st bloke was lazy and just did basic balance but when i went back his boss had to set this tghing up took about 15 mins to adjust etc as i dont think it had been used for awhile but it did the trick

steve
AnswerID: 99082

Follow Up By: V8Diesel - Saturday, Feb 19, 2005 at 17:48

Saturday, Feb 19, 2005 at 17:48
Maybe I'll fork out some more dough for the 'on-car' balance as you suggest.
0
FollowupID: 357443

Reply By: Diamond (Vic) - Saturday, Feb 19, 2005 at 16:41

Saturday, Feb 19, 2005 at 16:41
go to any so called expert wheel alignment/balance place and ask can they gaurentee to fix the problem.if not go to the next place.if they say yes drive it before you pay and if its not good its cost you nothing.
AnswerID: 99083

Reply By: GO_OFFROAD - Saturday, Feb 19, 2005 at 17:19

Saturday, Feb 19, 2005 at 17:19
Hard to say wether its castor wobble, or balance wobble without driving it.

They did put the castor correction bushes in the right way?

How much lift does it have?

Have some fun with gu's for alignment with aftermarket tyres, different castor/camber per side readings, no steering to centre adjustment, and the dreaded 'pulling left" GU problem......
AnswerID: 99085

Follow Up By: V8Diesel - Saturday, Feb 19, 2005 at 17:47

Saturday, Feb 19, 2005 at 17:47
Thanks GO_OFFROAD. Got the castor correction bushes (and the rest of the upgrade) installed by one of WA's leading suspension places. Before them, it was woeful. Drives much better now, but not still not great. My old HJ75 seems to almost steer itself in comparison.

50mm lift - Lovell's springs, Koni shocks, RTC steering damper (but I removed the spring straight away as I thought this may have contributed to the problem. Have not put it back as I do not want to 'mask' the problem, just fix it properly.

Last set of wheel alignment readings say:

LEFT FRONT
Camber 0.2'
Caster 3.8'
Toe -0.2mm

RIGHT FRONT
Camber 0.0'
Caster 3.4'
Toe -0.8mm

FRONT
Cross Camber 0.1'
Cross Caster 0.4' 0.4'
Total Toe -1.0mm

And it does have a slight pull to the left.

Re: aftermarket tyres. In your opinion, do BFG AT's or the new Cooper ATR's steer better on GU's? Should I go for the Bridgestone 694's to get the 'factory' feel back?

Your help is greatly appreciated. This is beginning to get frustrating.

0
FollowupID: 357442

Reply By: GO_OFFROAD - Saturday, Feb 19, 2005 at 18:08

Saturday, Feb 19, 2005 at 18:08
email me

darrenm@bigpond.net.au

And I will tell you how to try and fix the issue.
AnswerID: 99087

Follow Up By: udm - Saturday, Feb 19, 2005 at 19:30

Saturday, Feb 19, 2005 at 19:30
Can´t you just post the fix for everybody else to see it?
0
FollowupID: 357446

Follow Up By: GO_OFFROAD - Saturday, Feb 19, 2005 at 19:45

Saturday, Feb 19, 2005 at 19:45
Sorry udm,
we have far to many come in the door to help pay the bills from others to be telling everyone how to do it, though just telling someone isnt enough, as it needs the alignment set around the "modification" to be 100% successful.

An aftermarket adjustable relay rod can be one way of trying to overcome the problem though, but thats not the cheapest fix.
0
FollowupID: 357449

Reply By: Eric Experience. - Saturday, Feb 19, 2005 at 21:37

Saturday, Feb 19, 2005 at 21:37
V8Diesel.
Check the basics first before going for the exotic. Find out if your wheels/tyres are round, to do this jack the axle up so that the tyre is only 1 mm of the floor, then spin the wheel and note if the 1mm gap varies, my bet is that you have a delaminating tyre. Eric.
AnswerID: 99104

Follow Up By: V8Diesel - Sunday, Feb 20, 2005 at 11:56

Sunday, Feb 20, 2005 at 11:56
I watched the last balance 'with interest' and it all looked OK.
0
FollowupID: 357480

Reply By: udm - Saturday, Feb 19, 2005 at 23:31

Saturday, Feb 19, 2005 at 23:31
Just a hint, I had a motorbike with driveshaft, one of the universal joints cracked after doing some burnouts :-) , after that, the bike started to wobble when doing over 80km/h. I found the problem two weeks later when the joint finally fell apart.

Ulises
AnswerID: 99116

Follow Up By: V8Diesel - Sunday, Feb 20, 2005 at 12:01

Sunday, Feb 20, 2005 at 12:01
Service and grease the vehicle religiously myself so I can keep an eye on things. All seems good and tight.

Popped a rear uni on a 360 Chrysler V8 once at full squirt - interesting experienece isn't.
0
FollowupID: 357482

Reply By: rickwagupatrol - Sunday, Feb 20, 2005 at 01:35

Sunday, Feb 20, 2005 at 01:35
gday mr V.....
ring Beaurepairs kewdale or kwinana,,,,,ask for the mobile phone number of John,,,their wheel aligner.
have a chat with him.
this bloke is good, and i do mean Good.
the man is a whiz at the alignment stuff.

rick.
AnswerID: 99125

Reply By: Member - Hugh (WA) - Sunday, Feb 20, 2005 at 11:10

Sunday, Feb 20, 2005 at 11:10
V8 Diesel,

I had these issues on my GU and resolved when balanced at Richard's Tyrepower in Osb Pk. They have a road force balancing machine that has a roller to simulate road load on the tyre while dynamic balance is done, wheel located via studs not centre cone, etc. Apparently large tyres can deflect in a non uniform fashion as they rotate, with impact on balance. Perhaps not an issue to many but the GU is sensitive.

This worked on my GU so perhaps worth a try.

Regards,
Hugh
AnswerID: 99144

Follow Up By: V8Diesel - Sunday, Feb 20, 2005 at 12:11

Sunday, Feb 20, 2005 at 12:11
That's what I'm after! Thanks for that Hugh, I'll call them Monday morning and book it in. Hopefully this will either rule in or out the wheels / tyres as the cause. The roller may identify if the tyres are delaminating as Eric experience suggested too.
0
FollowupID: 357484

Reply By: Member - Hugh (WA) - Monday, Feb 21, 2005 at 00:13

Monday, Feb 21, 2005 at 00:13
No problems. These guys have given me good service so happy to recommend them.

A couple of times after tyre rotation I've picked up a slight imbalance. I take it back and they have no issue about re-balancing.

Let us know if this solves your problem.

Regards,
Hugh
AnswerID: 99262

Reply By: Member - Melissa - Tuesday, Feb 22, 2005 at 01:25

Tuesday, Feb 22, 2005 at 01:25
I gather you're in Perth??? If so, might be worth having a talk to Giant Nissan at Osborne Park. About 18 mths ago we had the same problem after fitting new tyres to our GU. We went back to our tyre dealer who spend considerable time and effort trying to fix the problem including doing an on-car alignment, taking the GU for several test runs, fine tuning etc etc. But alas, no joy there. Hubby finally took it up to Giant Nissan who managed to fix the problem very quickly. I'm sorry I can't recall exactly what the problem was and hubby is asleep already but I think it had something to do with castors and no, we didn't have to fit a castor kit or anything else.

:o) Melissa
AnswerID: 99424

Follow Up By: V8Diesel - Tuesday, Feb 22, 2005 at 09:45

Tuesday, Feb 22, 2005 at 09:45
Thanks Melissa, I remember when I got my Patrol there was a free 'factory fix' for this problem and I took my vehicle into Giant Nissan for the check (2001?). I believe it was a shim (or removal) to preload the swivel hub bearing or something to that effect. The problem I'm facing is that my GU travelled a 170,000 trouble free k's and the wobble only became apparent when I got the GU lifted 50mm late last year.

I think I am currently making headway towards solving this problem. After a busy day yesterday, I have a 7.45 appointment with Tyrepower Ossie Park to do a balance this mornning.

I'll post a follow-up on the forum when I've got it sorted. Seems I am far from alone when it comes to the dreaded WNS (Wobbly Nissan Syndrome).

(excellent choice of vehicle BTW :-) )
0
FollowupID: 357766

Sponsored Links

Popular Products (14)