unusual wobble at 100km

[J_Dub]

So just purchased an r50 terrano for a steal. Gona fix it up to sell just needs some minor or things fixed.

At 100km/h if I hit an undulation in the road the truck wobbles in a way as if the body is moving about the suspension. So the wheels remain straight and true and driving in a straight line, steering wheel fine, but the body feels as if it's wobbling and shaking. Hard to explain. Its not aggresive, just a smooth wobble. Then stops. Quite a freaky sensation though.

Any ideas to check first up. Bushes? Shocks? Rear shocks look new, fronts look old.

Jared

[zukmeista]

Panhard rod bushes maybe?

[ChurchurDan]

Check all the rear suspension bushes they are very common to fail and cause a nasty wobble.

[lax2wlg]

1. Wheel balance
2. Alignment
3. Inspect/Adjust/repack wheel bearings

[Crash bandicoot]

yeah these things flog bushes faster then they use a tank of gas.

[DEATH_INC]

Yup, if it feels like it's wagging it's tail it'll be rear arm bushes...common as.

[J_Dub]

OK cheers.
Actually wagging its tail is exactly how u would describe it..

Also just checked tyre pressures, suppose to be at 51psi they were all 25-29 psi. Can't help

[zukmeista]

Also just checked tyre pressures, suppose to be at 51psi

Doubt it that is probably max inflation pressure, should be running around 30-35psi unloaded.

[skid]

Also just checked tyre pressures, suppose to be at 51psi

Doubt it that is probably max inflation pressure, should be running around 30-35psi unloaded.

Yup. What he said......

open drivers door and look for a sticker that has the recommended tyre pressures on it

[J_Dub]

Checked tyres and all I could see was a max pressure. No recommended pressure. They stated 51psi max cold. Thought that seemed high but as there was no other reading and they did seem a bit under inflated I thought maybe correct

[3VILC]

Pretty sure the sticker on my r50 says something stupid like 28psi I always run them around the 32-34 mark feels way too soft on anything less

[tweake]

Checked tyres and all I could see was a max pressure. No recommended pressure. They stated 51psi max cold. Thought that seemed high but as there was no other reading and they did seem a bit under inflated I thought maybe correct

thats max pressure at maximum weight. theres no way your going to be that heavy. try a couple of different pressures up and down, some tires will run better at lower pressures others at higher pressures. the 30-35 would be a good start point.

[timmay556]

I had simlar in my GQ, I fitted a better wheel bearing system (from the GU's) and gave my steering box grubscrew an 1/8th of a turn and BAM drives like an arrow.