Outer Limits 4x4 Board

As stated in the title my patrol has a rumble in the driveline, I have eliminated the tail shaft from the equation and it still does it is it the transfer case, gear box or rear diff? has anyone else had something simillar? it also has a brief runble when taking off arond a corner in 1st & 2nd!

Check all your rear bushes and the engine/gearbox mounts.

mate i have the exact same thing when im coasting, anywhere above around 40km/h it will do it, especially at high speed like the freeway. you have the drive train so there is no load on the diff and perfectly coasting and it kinda sounds like when you run over those white lines on country roads that are textured and raised to make noise. I have replaced my rear diff and its still there, im assuming its the transfer case but anyone else who has had this problem and found what it was would be good to hear from you!!

Loose rear sway bar can make a rattle when low speed cornering, After climbing under and shaking everything by hand this seems to be the most obvious. Worn exhaust mounting rubbers could also be a cause. Let us know if you pinpoint and fix the problem.

i know you said you eliminated the tailshaft, so wat did you change or check to eliminate it???

my brother had a shorty GQ and it did the same thing and it happend to be slop in in the slip joint on the rear tailshaft.

Pickels

rusty bus wrote:mate i have the exact same thing when im coasting, anywhere above around 40km/h it will do it, especially at high speed like the freeway. you have the drive train so there is no load on the diff and perfectly coasting and it kinda sounds like when you run over those white lines on country roads that are textured and raised to make noise. I have replaced my rear diff and its still there, im assuming its the transfer case but anyone else who has had this problem and found what it was would be good to hear from you!!

Thats exactly what it sonds like, you described how it does it and how it sounds perfectly. I eliminated the tail shaft by exchanging it with a mates then removed it totally and drove in 4wd and it was still there. how hard is it to change your transfer over or how much roughly to rebuild it?

every patrol I've been in has had a rumble in the driveline.

i have a similiar noise but it wlaso wines between 60 - 70 changed the grade of oil in my transfer stopped the grumble and made the wine alot quieter after pulling the rear diff out twice and swapping tailshafts and unis that is hahah

Transfer case chain may be a little loose. No problem realy.
It is standard for some Td42s to make a little noise but I havn't heard the same noise in a petrol model. Try some thicker oil , often works well.

Yer i might throw her on a hoist and change the oil, see how she goes.

this mabey a stupid question, but are ur freewheeling hubs locked in???? cos this will vibrate the driveline in my ute because of the angles on the front tailshaft, so if you have removed the rear tailshaft and driven in frontwheel drive your hubs would have been in, so make sure there in "FREE" when ur daily driving,

also How much lift is in your rig??

Pickels

MEGATROL wrote:this mabey a stupid question, but are ur freewheeling hubs locked in???? cos this will vibrate the driveline in my ute because of the angles on the front tailshaft, so if you have removed the rear tailshaft and driven in frontwheel drive your hubs would have been in, so make sure there in "FREE" when ur daily driving,

also How much lift is in your rig??

Pickels

freewheeling hubs are definately on free, removed the front tail shaft today and drove in 2wd as i always do and it is still there, definately right under me, truck has 2" suspension lift and 2" superior extended shackles. did it b4 i put the shackles in! have changed tyres ect, I'm interested in the loose chain in transfer, can it be tensioned?

ok soo i pulled the centre out to put air locker in! whilst examining the rest of the diff i noticed there was alot of play in the wheel bearings! i'm assuming they are stuffed! having them replaced! hopefully this sorts out my noise problem

my 04 ute also has a rumbling noise i think its the gearbox/transfer its really noticable when in low range and applying the throttle after idling along and when labouring it

i have the same noise and its my Rear Pinion bearing heading for a bit of a bang i recon soon