Anyones Airbox rattle? Also rear suspension Q ?

[maor]

I swear it's my airbox rattling around in the back.

If I go over bumps or jumps on the road, it sounds like something in the back is making a right rattle sound.

I tightned the bolt on the air box to little affect. Any other ideas?

Also I get a rear knocking from my suspension when I go off the throttle. At very very low speeds if I accelerate then suddenly go off it knocks from the rear.Can do it very easily using the throttle, any ideas for that?

[maor]

Also a third thing I've picked up on. At around 70 MPh I get an engine whine, sounds like the whine you can get from an AC compressor but it is at 70 +.

I can control the whine with my throttle, 0% pressed and it whines completely, 10% pressed and it goes?

[Ahsai]

There are two rubber grommets installed at the feet of the air box. Are those missing? Maybe the snokel tube is loosely attached?Rear drop links and sway bar bushing are usual suspects on rear suspension.

Edited August 13, 2013 by Ahsai

[Hilux2400]

It's surprising but wheel (lug) bolts that are not tight can cause slightly loose wheels to make some unusual noises that are not always constant. Sometimes this knocking can occur on slight overrun when travelling slowly and then disappear as speed builds up.

To locate a noise it is a good idea to get a passenger to use a stethoscope and this aids direction to the source. It's always a good start.

[maor]

There are two rubber grommets installed at the feet of the air box. Are those missing? Maybe the snokel tube is loosely attached?Rear tie rods and sway bar bushing are usual suspects on rear suspension.

Will check that, what do you mean be the tie rod on the rear?

I

[Ahsai]

oops, I meant to say drop links from the sway bar. Not sure why I typed tie rod LOL

[maor]

Sorted rear airbox with replacement grommets. Still got the suspension noise, annoying.

[Hilux2400]

Check wheel nuts (lugs)

[Ahsai]

Sorted rear airbox with replacement grommets. Still got the suspension noise, annoying.

All right! What have you checked so far at the rear?

[maor]

Changed the rear links today with no change.

I can quite litearlly control the clunk with the throttle.

Tiny bit of acceleration on then suddenly off and it makes that little clunk noise. I can even go up and down on the throttle really quickly and make it clunk in the back!

Engine mounts fine and tranny mount is fine!

[Ahsai]

Any free play on the CV joints?

[maor]

Nope, CV was fine.

I am thinking it's either the upper tuning fork arm thing, as I had to replace the front ones few weeks ago. Or it's the middle bush on the wishbones you get.