Help, I have a landcruiser 2002 100 series TD, have a very strange noise coming

Submitted: Thursday, Apr 15, 2010 at 23:54
ThreadID: 77746 Views:11546 Replies:11 FollowUps:10
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Hi there I have the above car and in the last two weeks noticed a strange noise coming from underneath.
The low down; I have worked out that it is a rotational noise as it comes on at different speeds and it is faster at higher speeds and so n so. Just before I heard the noise I had the tyres rotated (front to back) as there was a slight wear on the front LH tyre. I then went away up to the Murry camping and drove through a bit of bull dust.
Since I started hearing the noise I re-did the front and rear brakes, inspected the rear handbrake drums and adjusted them and still, the noise remains.
It seems to be apparent most often when I slightly release the accelerator when cruising, but can be notice when im at high speeds and at low speeds coming up to lights.

I did 50 km on the freeway today and before I hit traffic lights I stopped and checked the temp of each wheel bearing. No heat in any of them.

I feel like I can feel it in the steering wheel and have also as a passenger felt it resonating through the floor quite strongly.

What is this noise I ask, 3 mechanics are dumbfounded, two of them said wheel bearings, the other one and I don't agree.
Can anyone out there possibly offer an explanation? Has this happened to anyone else?

The noise is like a rub/light scrape sound, (like the noise of a leaf lightly scraping on the side of your car as you slowly go by) it is intermittent and is rotational.
Thanks, any comments or most will be most welcome.
Dave
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Reply By: Stu & "Bob" - Friday, Apr 16, 2010 at 07:27

Friday, Apr 16, 2010 at 07:27
G'day Dave,
You may have a small stone or similar caught in the brakes. Check between the disc and backing plate.


HTH
AnswerID: 413108

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 10:28

Friday, Apr 16, 2010 at 10:28
Thanks for that comment, I pulled both discs off the back and did not notice any stones, but thanks anyway, I have not checked the front behind the disks. I thought it was coming from the front rh side but the mechanic I trust said he thought it came from the back. Confusing. grrrrrr
Thanks for your comment tho.
Dave
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FollowupID: 683185

Reply By: Goldfind (Dunsborough) - Friday, Apr 16, 2010 at 07:28

Friday, Apr 16, 2010 at 07:28
Hi Dave
I have the same vehicle (2001) with 150K on it and have had no similar problems. Previous was an 80 series cruiser with 500K and it had diff whine,which sounds like it may be similar. Have you checked oil levels in diff?
Sorry I can't offer any firm solutions, hope someone here will help you!

Cheers Wayne H
AnswerID: 413109

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 10:30

Friday, Apr 16, 2010 at 10:30
Hi Wayne, thanks for that, Ill check diff levels this morning, dont htink it is diff but will check anyway, yes the mechanic said he has never heard this noise before. so it isn't common apparently. Ill keep checking.
Dave
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FollowupID: 683186

Reply By: Member - Craig P (W - Friday, Apr 16, 2010 at 08:13

Friday, Apr 16, 2010 at 08:13
Hi Dave,

Also check your uni joints on the tailshafts you might have a crook one . grease them up to see if it helps with the noise if so there's your problem.

Hope this helps
Craig
AnswerID: 413117

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 10:32

Friday, Apr 16, 2010 at 10:32
Thanks Craig, already done them except the front above the stone guard for the front, will do it now.
Dave will keep you posted, but somehow I dont think that will be it.
Thanks for the comment.
Dave
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FollowupID: 683187

Reply By: 3.0turbob - Friday, Apr 16, 2010 at 09:11

Friday, Apr 16, 2010 at 09:11
Dave, Not familiar with LC 4wd sytem, could the LH hub be locked in 4wd or not properly disengaged? You said you rotated the tyres before you heard the noise, maybe rotate the tyres back to the way they were, if no noise you have a starting point for more investigation.

Rob
AnswerID: 413123

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 10:39

Friday, Apr 16, 2010 at 10:39
Hi Rob yes, the car is constant 4wd so dont know about this one, and yes I AM GOING TO ROTATE THE TYRES BACK THIS MORNING TO SEE IF THAT HELPS. Somehow.
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FollowupID: 683188

Follow Up By: 3.0turbob - Friday, Apr 16, 2010 at 17:20

Friday, Apr 16, 2010 at 17:20
No need to shout Dave, I can hear you from here.Yes I realize now that the 100 series is constant 4WD. Sorry if I offended you by stating the obvious (you would have thought of that anyway). I'm sure you'll sort it out in due course.

Rob
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FollowupID: 683226

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 22:55

Friday, Apr 16, 2010 at 22:55
thanks for the reply rob and sorry for the shout, i usually try to keep quiet when I talk.
Dave
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FollowupID: 683305

Reply By: briancc - Friday, Apr 16, 2010 at 10:12

Friday, Apr 16, 2010 at 10:12
I have 105, friend has and 80 series and we have both had a similar noise. It was from the (rear) brake caliper, there is a thin steel 'cover' that goes over the pad inspection hole. This was bent up and just scrapes on the wheel rim. I only (eventually) found mine by looking from underneath with the wheels still on. If you take the wheel off, it flicks back and you can't see the problem. Good luck.
AnswerID: 413129

Reply By: TerraFirma - Friday, Apr 16, 2010 at 11:10

Friday, Apr 16, 2010 at 11:10
You may have an over tightened hand brake adjustment. Many of the vehicles are coming out of service from the dealers with this problem. I have seen 3 new 200 series with this problem however it was all via Lane Toyota in Melbourne. It also fits your description.
AnswerID: 413136

Reply By: Voxson - Friday, Apr 16, 2010 at 13:47

Friday, Apr 16, 2010 at 13:47
Somebody hasnt tied a cabletie around your drive shaft have they as a prank???

AnswerID: 413144

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 22:43

Friday, Apr 16, 2010 at 22:43
those buggers.
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FollowupID: 683300

Reply By: Member - Tour Boy ( Bundy QLD) - Friday, Apr 16, 2010 at 15:21

Friday, Apr 16, 2010 at 15:21
Lock the centre diff, jack up all 4 wheels (on stands preferably) and put it in gear and get it to the speed that it is loudest and have a look. This way you will be able to tell if it is from the front or back LHS or RHS. If no noise more than likely tyres as they aren't in contact with the road to make the noise.

Cheers
Dave
Cheers,
Dave
2010 Isuzu FTS800 Expedition camper
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Had 72 cruisers in my time

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AnswerID: 413153

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 22:45

Friday, Apr 16, 2010 at 22:45
thanks for that dave
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FollowupID: 683301

Reply By: westozal - Friday, Apr 16, 2010 at 17:38

Friday, Apr 16, 2010 at 17:38
Hi,
I had an gxl 80 series which made a similar noise. Rebuilt auto etc only to find out that the front axle cv's inside were running dry of grease and the noise was them rubbing inside the axle housing as they rotated. There are two nuts on top of the axle housing which you remove and screw in grease nipples, reverse when finished(greased). The noise was intermittent and perhaps worse at less than 80 kmph.
The noise travells up the tailshaft which makes you think the transmission is buggered.
This may not be your problem but its an idea.
Regards Alan.
AnswerID: 413169

Follow Up By: tommy1 - Friday, Apr 16, 2010 at 23:08

Friday, Apr 16, 2010 at 23:08
A very interesting one alan, I called into the toyota place today to discuss their wrong diagnosis of the front wheel bearings, they were very apologetic and said that their young bloke explained it to them and they explained to him that it didnt sound like wheel bearings, so they were nice and did offer some other options to try to assist.

SO I got the grease out today and greased the nipples (2 that I couldnt get to conventionally) and then took it for a run, and the noise seems to have gone, have just done 300 km with a trailer and still nothing.

I possibly think that the part of the prop shaft that slides inside the yolk was dry and the grease had assisted. But it is not really convincing. Time will tell.
Ill keep an eye on it and report anything else if I have to.
thanks again and keep chatting if you have any other ideas or intereting things happen to you.
DAve
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FollowupID: 683308

Reply By: Member - Julie P (VIC) - Saturday, Apr 17, 2010 at 06:13

Saturday, Apr 17, 2010 at 06:13
Hi - just a thought but recently on here there was a post about a strange noise, and it was the speedo cable being dry - same thing had happened to us, got louder under speed, sounded like a "rotating" sound - almost a whine - anyway a simple thing to check and fix apparently. I had had dire thoughts of something serious, but was a very simple thing.
good luck
jules
AnswerID: 413224

Follow Up By: tommy1 - Sunday, Apr 18, 2010 at 21:50

Sunday, Apr 18, 2010 at 21:50
Hi Jules thanks for that, will have a look at it. I went away to camperdown and it didn't make a noise with a float on the back, but after the first day there without the trailer it made the noise again just once for a few seconds. Then trip back to melb was fine, no noise then or even 30 km after dropping the trailer off. Still a mystery but will try the speedo if there is a cable, or is it electric?

Thanks for the comment.
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FollowupID: 683586

Reply By: tommy1 - Sunday, Apr 18, 2010 at 21:54

Sunday, Apr 18, 2010 at 21:54
UPDATE:
so when I went to camperdown the noise was not evident whilst towing a trailer, but when the trailer was off it cam back for a few seconds then nothing more, even all the way back home after I dropped off the trailer, melbourne, mornington peninsula.

Still a mystery, does anyone else know of the speedo thing, are these electronic?

I am not as worried as I first was as it seems all the vital parts are functioning perfectly, I do have to re pack the front wheel bearings though.

Any other ideas or suggestions would be most welcome, I do want to get to the bottom of this.

Oh yeah I had a look at the brake calipers and there was nothing rubbing on the wheels on any of them, but thanls for the suggestion.
AnswerID: 413495

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