rattle on a BJ42

Post by **Wilko76** » Mon Jun 12, 2006 7:10 pm

Hi All

I hope somonw can help! I have substantial rattle which seems to be coming from under/near the firewall somewhere. i just came back from my fist camping trip and had to do around 300 highway km to ge there. The rattle only seems to happen when we go over successive bumps(rough road) It sounds like something is loose and it is driving me crazy. Just imagine the sound of a door rattle but about 10 times louder.

The vehicle steers well and i know suspension and uni's are ok. I think it might be something as simple as a loose mount/bracket but can't seem to locate it.

Hopefully someone who is not a newby like me might be able to suggest where to look/how to fix!

Thx all

Post by **shorty_f0rty** » Mon Jun 12, 2006 8:03 pm

the rattle of a 40 is stock from factory..

i suggest getting under there and giving everyhting you can see a good shake (when cold) to see if there is anything with any play.

check gaerbox and engine mounts..

Post by **bj42turbo** » Mon Jun 12, 2006 8:40 pm

shorty_f0rty wrote:the rattle of a 40 is stock from factory..

Yeah I added some aftermarket rattles too
Could be zorst running to close to fire wall also

BJ

Post by **hokey** » Mon Jun 12, 2006 9:01 pm

Check wheel bearings by grabbing the wheel at 12 and 6 and give it a shake back and forth to see if there is much play. check you U-bolts aswell

Post by **Wilko76** » Mon Jun 12, 2006 10:15 pm

Thanks all

Looks like i will be under the truck this weekend!

I will keep you posted!

Post by **Wilko76** » Wed Jun 21, 2006 10:41 pm

Well I found it. It turned out to be the drive shaft between the transfer box and front diff. i filled it up with grease and it has taken some of the play out of it, but still rattles some.

Where can i pick up a reco one? Anyone recommend a place in Brissie that sells reco or new ones? What is the best option?

Post by **bj42turbo** » Wed Jun 21, 2006 11:11 pm

So are the uni's worn?

BJ

Post by **matt.mcinnes** » Thu Jun 22, 2006 12:53 am

I take it you only got the rattle in 4x4 with the hubs out. The shaft should not rattel in 2 wheel drive as the front tail shaft will not be turning.

Is it the slip yoke thats worn or the uni joints. Uni joints can be replaced, slip yoke you will need to either get a second hand one in better condition, wreckers or eBay or have it refurbished.

Post by **Wilko76** » Thu Jun 22, 2006 7:37 am

I have only noticed it in 2WD. I have not noticed it in 4x4 as most of that driving is on the beach. So fairly smotth running.
The Uni's appear fine. It is is the slip joint that has the slap.
So the idea then is to locate a one in better condition?

Post by **matt.mcinnes** » Thu Jun 22, 2006 3:48 pm

Wilko76 wrote:I have only noticed it in 2WD. I have not noticed it in 4x4 as most of that driving is on the beach. So fairly smotth running.
The Uni's appear fine. It is is the slip joint that has the slap.
So the idea then is to locate a one in better condition?

Must have an awfull lot of slap to be noticed inside a FJ40 and if your not getting it in 4x4 then it may not the the problem, the slip yoke if for sure worn and needs replacing from what you have discribed, has the noise stopped since you pumped it with grease?

Shop around it my be more cost effective to have it refurbished than buy a replacement.

Post by **Wilko76** » Thu Jun 22, 2006 7:10 pm

Noise significantly reduced when greased however still quite noticible. If not the problem then i not sure what is.

Found a place in Geebung which will refurbish mine for $350 fitted. Sound reasonable?

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rattle on a BJ42

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