Re:Re:Re:Jimny pulling to right

Sorry for long post but try and cover all info as best as I can to eliminate guessing.

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Background:
Jimny 2019 gen4 - right hand drive (south africa).
Usage: With covid lockdown, no 4x4ing / overlanding and only tar road roads driving with 14000km on the clock.
Do have 50mm lift (coil spring and shock lift)
Do have 215/75/15 AT fitted.
Have adjustable panhard bar front fitted just now.

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The history of changes made.
After the lift (without the adjustable panhard bar and before fitment of new tires)
1) the steering wheel was slightly off to right. Wheel allignment was done and car tracked pefect straight albeit the steering wheel was not centered.
2) the wheel tracking in relation to chassis was not centered anymore and confirmed with lots of measurement. First just manually after 50mm lift, but then also with machine measuring and confirming it.
3) whenever we set steering to be centre as per martins instructional video, the vehicle pull right, even after wheel alligments at 2 different shops locally in my home town

---- Result.
Suzuki, wheel alignment centres told me I need to fit an adjustable panhard bar.
We set back the steering wheel to be slightly off centre and at least the car was tracking 100% straight. I decided to leave steering wheel off centre while I wait for adjustable panhard bar.

Month later then I fitted the new tyres. Everything stayed the same and wheel alignment was check but nothing was adjusted. All readings was still within spec. So I take it the wheels did not introduce anything "funny".

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Now 4x4 shop and wheelalignment garage (one of best 4x4 garages in Cape Town) have fitted the adjustable panhard bar and did do the following
1) tyre presures have been checked and set so they all the same before any changes was made.
2) the alignment of wheels and chassis has been set to be perfect centre with chassis (panhardt rod adjusted).
3) wheel alignment has been performed and the steering wheel has been adjusted to be straight again.

However, when testing after wheel allignment, the jimny pull right just like the first time couple months ago when 50mm lift was added.

The shop then swapped wheels to ensure it is not a case of tire pul (conicity).
Wheel alignment was rechecked.
In drive test the car still pull right. It is almost when you drive there is something pushing steering right.

I was then instructed to take it to a power steering specialist. They performed.
1) they first drove it to confirm pulling to right.
2) they plugged in computor to see if electronic steering assist setting was correct. They showed me the computor parameters and i saw that they was also pefectly set, showing that electronic power steering was working correctly.
3) they then also removed the steering damper shock to eliminate that that might introduce some force while driving.

But it is still pulling right.!!!
The power steering and 4x4 fitment centre said it can then only be the 50mm lift that was fitted, but I cannot see how when all parameters has been brought back into line with adjustable panhard bar and proper wheel alignment and steering rod adjusted to bring steering wheel back to centre.

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any ideas
Anyone have experienced this before and who might shed some light for me on the subject or what I can have tested more.

Will now alsi add back adjustable panhard rod - this is driving me nuts.








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Found an interesting point made by Martin that I will investigate.

The vehicle has been undercoated (though it was lanolin based) and maybe it could have relation somehow as only brakes can be last thing that has not yet been checked.

bigjimny.com/index.php/forum/7-jimny-tec...of-the-road?start=24

Sounds like your modifications have altered the geometry of the suspension, or the general balance of the vehicle.

That could cause all manner of handling and steering issues, it happens with Land Rovers.

Hard to know what to suggest if you want to retain the lift kit and larger tyres, except to check the steering geometry as far as it can be adjusted.

lightning wrote: Sounds like your modifications have altered the geometry of the suspension, or the general balance of the vehicle.

That could cause all manner of handling and steering issues, it happens with Land Rovers.

Hard to know what to suggest if you want to retain the lift kit and larger tyres, except to check the steering geometry as far as it can be adjusted.

Yes indeed. Just that all places said that the obvious things has been checked and is within specs. (The only thing up to now that has not been explored is a possible braking impact)

This seems to be a funny but I will keep investigating whatever you guys can add as a posibility.

But acoording to me it started with the lift so somehow something impacts something, but what it is we dont know yet.
I was so sure that it was panhard rod related, but now it seem it was not.

There are a number of void bushes in a suspension and steering system. These must be slackened off when the suspension or steering is modified and then re-torqued to specification afterwards. Prior to re-torque, the vehicle must have it's wheels on the ground. Also bounce the vehicle a few times to settle everything down.

Roger

Has the kit that you used to lift the Jimny made any provision to correct the castor angle, either with new arms or correction bushes? Thinking it could possibly be worth accurately measuring the distance between the centre of the axles on each side and comparing. If the front and rear axles are not parallel to each other and also at exactly 90 degrees to the thrust axis of the car that could cause the issue.