anonying noise

Submitted: Tuesday, Mar 09, 2010 at 16:59
ThreadID: 76714 Views:2491 Replies:9 FollowUps:11
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hey guys & girls can someone please help me out i own an 80 series landcruiser and it is making an anonying noise when i go over 100km it almost sounds like a really worn bearing. it makes the noise just as i start to accelarate and when stop accelarating,it only makes the noise when i am going down a hill or on flat ground,it doesnt do when its under load, it is now doing it as low as 60km. I have had both tail shafts balanced and my tranfer case re-built $2000 later still making the noise has anyone had this problem before
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Reply By: Member - MUZBRY(Vic) - Tuesday, Mar 09, 2010 at 17:01

Tuesday, Mar 09, 2010 at 17:01
Gday
You may have a loose baffle in the muffler.
Murray
Muzbry
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AnswerID: 408085

Reply By: Member - Tour Boy ( Bundy QLD) - Tuesday, Mar 09, 2010 at 17:14

Tuesday, Mar 09, 2010 at 17:14
Front uni joint on rear shaft would cause the noise.
Did they replace the uni's or just balance the shafts?

Cheers
Dave
Cheers,
Dave
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AnswerID: 408088

Follow Up By: madabout80s - Tuesday, Mar 09, 2010 at 17:21

Tuesday, Mar 09, 2010 at 17:21
yeah uni joint got done it sounds like its coming from the gear box area
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Follow Up By: Member - Tour Boy ( Bundy QLD) - Wednesday, Mar 10, 2010 at 08:46

Wednesday, Mar 10, 2010 at 08:46
The next thing I would look at is the rear diff preload. Can be a prob if the vehicle has done some heavy towing. Found this out myself after putting in a new front diff, transfer case. Was the preload in the back diff all along. If I loaded the vehicle up, no noise, accelerate hard, no noise, back off hard, no noise, coast between acc and decellerate noisy as hell. Still wasn't leaking at the seal.
Cheers
Dave
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Dave
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Follow Up By: madabout80s - Wednesday, Mar 10, 2010 at 11:06

Wednesday, Mar 10, 2010 at 11:06
THAT SOUND VERY SIMILAR TO WHATS HAPPENING TO ME AND I THINK THE OWNERS OF THE CAR BEFORE ME DID A BIT OF TOWING. THANKS MATE I WILL CHECK IT OUT
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FollowupID: 678139

Reply By: B1B2 - Tuesday, Mar 09, 2010 at 17:14

Tuesday, Mar 09, 2010 at 17:14
G'day madabout80's,
More info on where the noise appears to be coming from might help, if you can pinpoint it. When you say worn bearing do you mean wheel bearing?
Have you checked your CV joints for lubrication. Remove the filler plug from the CV and check as per manual with a screwdriver. Add a small amount of oil and see if the noise goes away.

Cheers,
Bill
AnswerID: 408089

Follow Up By: madabout80s - Tuesday, Mar 09, 2010 at 17:26

Tuesday, Mar 09, 2010 at 17:26
it sounds like it coming from the gear box area. I work on house hold pumps for a living and it sounds a bit like pump bearing when its on its way out but a bit more nasty sounding
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FollowupID: 677991

Follow Up By: Member - Barry (NT) - Tuesday, Mar 09, 2010 at 17:57

Tuesday, Mar 09, 2010 at 17:57
front g box bearing comes to mind
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FollowupID: 677997

Follow Up By: madabout80s - Wednesday, Mar 10, 2010 at 11:15

Wednesday, Mar 10, 2010 at 11:15
THANKS MATE I WILL CHECK IT OUT
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FollowupID: 678143

Reply By: tonysmc - Tuesday, Mar 09, 2010 at 17:58

Tuesday, Mar 09, 2010 at 17:58
Yes ,I have had this problem.
This is going to sound REALLY stupid, but disconnect your speedo cable and go for a drive. I know people that have fixed wheel bearings, unijoints and rebuilt the gearbox and transfer case, before finding out it was the speedo cable. Having heard the noise myself on one vehicle I could not believe that this noise could be coming from a cable. A couple of mechanic friends of mine said that they have rebuilt gearboxs on the owners request only to find a hell of a noise coming from the speedo cable when they took it on a test drive.

Good luck, Tony.
AnswerID: 408097

Follow Up By: guy007 - Tuesday, Mar 09, 2010 at 18:09

Tuesday, Mar 09, 2010 at 18:09
My 80 has a sensor not a cable
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FollowupID: 678002

Reply By: kiwicol1 - Tuesday, Mar 09, 2010 at 18:23

Tuesday, Mar 09, 2010 at 18:23
could be one of the diffs on its way out. they can send the noise along the drive shafts, or it could be the centre diff.

Cheers Col
AnswerID: 408102

Reply By: blue one - Tuesday, Mar 09, 2010 at 18:38

Tuesday, Mar 09, 2010 at 18:38
Mate had a similar issue where one of the spacer blocks supporting the exhaust fell off. He thought it was a uni joint also.

Hope this helps

Cheers
AnswerID: 408105

Reply By: Member - Scoot (SA) - Tuesday, Mar 09, 2010 at 20:20

Tuesday, Mar 09, 2010 at 20:20
It's not a vacuum leak is it, this sometimes can make a squealing type noise when vacuum is high like going down a hill or on flat ground.

Just a thought , I may be on the wrong track.

Scoot . :-)
AnswerID: 408126

Follow Up By: madabout80s - Wednesday, Mar 10, 2010 at 11:11

Wednesday, Mar 10, 2010 at 11:11
ITS MORE OFF A GRINDING NOISE THAN A SQUEALING NOISE
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FollowupID: 678142

Reply By: techo2oz - Tuesday, Mar 09, 2010 at 20:59

Tuesday, Mar 09, 2010 at 20:59
Mine had an annoying vibration/noise that came in at around 100k's especially when accelerating.

Had it checked out a few times but no one could find the source. Unfortunately it turned out to be the bolt holding the harmonic balancer on had worked loose. It ended up chewing out the key way on the crank and was a costly repair.

Might not be your problem but another thing you could check.

Peter
AnswerID: 408136

Follow Up By: Member - Wayne B (NSW) - Tuesday, Mar 09, 2010 at 22:18

Tuesday, Mar 09, 2010 at 22:18
This is a common problem particularly after a timing belt has been replaced.

However we are all just guessing unless you can supply more info as to the location of the noise.

Gearbox rattle is common on many 4by4 due to the size of the gears. My 80 makes a serious rattling noise if you are too low in the RPM for the gear. That is normal and one of the reasons manufacturers have fitted these bloody Mas damper flywheels to modern vehicles. Problem is they cause more problems that the fix.

Cheers
Wayne
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FollowupID: 678063

Reply By: hotfishez - Wednesday, Mar 10, 2010 at 10:27

Wednesday, Mar 10, 2010 at 10:27
what tyres are you running and how worn are they?
AnswerID: 408203

Follow Up By: madabout80s - Wednesday, Mar 10, 2010 at 10:42

Wednesday, Mar 10, 2010 at 10:42
GT RADIALS ADVENTURO A/T 305/70/16R WITH 80% TREAD I DONT THINK ITS MY TYRES CAUSE THEY ARE NOISIE ALL THE TIME
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FollowupID: 678134

Follow Up By: hotfishez - Wednesday, Mar 10, 2010 at 17:32

Wednesday, Mar 10, 2010 at 17:32
I didi have a vibration issue that was the cause of noise at certain speeds. turns out it was the tires caused by the way they were wearing... Good luck
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FollowupID: 678196

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