GU wobble
Submitted: Saturday, Feb 19, 2005 at 15:39
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V8Diesel
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
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.
FollowupID:
357442
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 :-) )
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