4.8 Suspension noise

[IR_Eddie]

My 4.8GRX (2007 with 80,000km) makes a knocking noise when i am in 4x4. I noticed it the first time when entering Atlantis dunes (sand) just after i have engaged 4x4 mode. It is also quite loud when i go over obstacles and it sounds like suspension being knocked by hammer (more specifically the coils not seated properly). Here is a video where you can hear it happening (turn your volume way up). Ive not paid to much attention to it as I thought it might be normal with the lift kit etc... however i heard a similar noise (sounds like something under tension suddenly releasing) while driving on tar in 4x2 mode the weekend which sparked me to think something is wrong. difficult to pin point the location of the sound while offroad but the incident over the weekend sounded (and felt) like it comes from the bottom of the left side of the vehicle (my wife though i drove over something that shot up against the car)

http://www.youtube.com/watch?v=H12jCKHUEQI

This was recorded during an outing with Steve (Biggles) at Honingklip in Feb.

Mods include:
arb front air locker
Suspension lift
Steering stabilizer

Any advice please.

[Tinus lotz]

Gries bietjie die slip joint op jou prop shaft en kyk dan weer

[IR_Eddie]

Thanks Tinus - any idea where a novice like me can get a copy of the 101 for greasing a prop shaft slip joint?

[Tinus lotz]

Afaik put a grease gun on the nipple pump till it comes out the slip joint stop and move to next one very easy

[Michael]

Eddie

Might be worth checking the freewheel hubs, they get sticky after a while and they tend to do this as well.

There is a thread under the drivetrain section on freewheel hubs

[Peter Connan]

Another possibility is that you have a broken anti-sway bar.

As Tinus said, it's very simlple to grease the slip joints. There is a grease nipple on each, on the outside of the propshaft. While you are busy, also grease the universals. Each one has a grease nipple on the cross-piece, inside "inside" the u-joint. So there are six grease nipples on the drivetrain that need greasing every 10k km.

[petrol]

Julle mag reg wees maar daardie klink vir my na coils wat nie mooi in hulle groewe sit nie, daar is veronderstel om n rubber te wees tussen die coils en waar hy in pas, ek dink daardie is metaal op metaal. Anders soos genoem was die sway bar, hy is dalk net los of as hy verleng is om op te maak vir die lift kan die verlengings dalk gebreek het.

[Tinus lotz]

Eddie i hear and see that everyone in your area are very happy with johan tires viljoen he has a new place in your area if you dont get the problem speak him

[SJC]

Another possibility is that you have a broken anti-sway bar.

As Tinus said, it's very simlple to grease the slip joints. There is a grease nipple on each, on the outside of the propshaft. While you are busy, also grease the universals. Each one has a grease nipple on the cross-piece, inside "inside" the u-joint. So there are six grease nipples on the drivetrain that need greasing every 10k km.

Is daar enige ander plekke op die voertuig wat ook ge grease moet word?

[NMAD]

My 4.8GRX (2007 with 80,000km) makes a knocking noise when i am in 4x4. I noticed it the first time when entering Atlantis dunes (sand) just after i have engaged 4x4 mode. It is also quite loud when i go over obstacles and it sounds like suspension being knocked by hammer (more specifically the coils not seated properly). Here is a video where you can hear it happening (turn your volume way up). Ive not paid to much attention to it as I thought it might be normal with the lift kit etc... however i heard a similar noise (sounds like something under tension suddenly releasing) while driving on tar in 4x2 mode the weekend which sparked me to think something is wrong. difficult to pin point the location of the sound while offroad but the incident over the weekend sounded (and felt) like it comes from the bottom of the left side of the vehicle (my wife though i drove over something that shot up against the car)

http://www.youtube.com/watch?v=H12jCKHUEQI

This was recorded during an outing with Steve (Biggles) at Honingklip in Feb.

Mods include:
arb front air locker
Suspension lift
Steering stabilizer

Any advice please.

Maybe check all the rear control arm bushes for separation, I had one bush that had separated so the steel control arm could move excessively in the chassis mounting making noises