gday all,
Been having some problems with the LJ. Its a 173, Commodore cable clutch, M20
and 3.36 Banjo.
Basicaly if have been hearing a metal screaching noise, similar to when you 'turn' a piece of metal up in a lathe, that metal on metal sound, and vibrations.
Last nite i replace the oil in the gearbox and there was no metal filings in the oil i drained.
Anyone got some suggestions?
Steve
Noise & Vibration
Started by
_73LJWhiteSL_
, Jun 05 2006 07:34 PM
17 replies to this topic
#2
TerrA LX
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Fulcrum Fixture
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Posted 05 June 2006 - 07:43 PM
Can you tell me if it makes the sound when you are going and stopped and if it changes when you push the clutch in?
#4
_73LJWhiteSL_
_73LJWhiteSL_
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Posted 05 June 2006 - 08:17 PM
The noise generaly happens under load (accelorating) I don't seem to get the noise any other time, and pushing the clutch in doesn't make any difference cause the noise stops as soon as i stop accelorating.
Steve
Steve
#5
_Herne_
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Posted 05 June 2006 - 08:20 PM
The vibrations bit of your query suggests, possible universal joints but I haven't ever heard them squeal, I guess anything is possible.
Herne
Herne
#6
TerrA LX
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Posted 05 June 2006 - 08:26 PM
is the tailshaft not touching something like a bracket or seat bolt.
teltail signs will be a shiny ring at the contact point.
teltail signs will be a shiny ring at the contact point.
#7
_73LJWhiteSL_
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Posted 05 June 2006 - 10:20 PM
Thanks for the tips guys. Dad seems to think uni joints as well... Even through i replaced them about 12,000 miles ago... maybe because i don't think i ever pumped any grease into them 
Steve
Steve
#8
rodomo
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Posted 07 June 2006 - 12:07 AM
Loose fan belt?
#9
makka
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Posted 07 June 2006 - 03:02 PM
water pump or alternator bearing?
#10
_73LJWhiteSL_
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Posted 07 June 2006 - 08:59 PM
Thanks for keeping the suggestions flowing people.
The noise doesn't sound like a fan belt squealing, but i will have a look at that when i get the car running again.
I hope its not the water pump or alternator. Both have been replaced in the last 6 months, the water pump a genuine Holden part, and the alternator a recoed 50 amper from a mate of dads.
I discovered last nite that there was some vertical movement in the tail shaft uni joints, both of them, so i have given the tail shaft to a mate and two new uni joints to replace the installed uni joints.
Once i get the tail shaft back i am going to check all the bolts on the diff (I did change the centre 6 months ago) and the bolts on the gearbox, bell housing and cross member ( I replaced the rear gearbox mount about 2 months ago). The clutch still has plenty of meat on it (about 10mm so 5mm + 5mm) and the flywheel and all clutch all seems to be bolted together fine. As mentioned above i did an oil change on the gearbox on sunday nite, so from what i have told you above if the noise isn't the unis destroying themselves from lack of lubrication, my next assumption would be the thrust bearing or possibly engine mounts.
I checked the tailshaft for signs of rubbing and there was no shiny rings on the tailshaft.
Thanks again for the suggestions peoples.
I love this forum 
Steve
The noise doesn't sound like a fan belt squealing, but i will have a look at that when i get the car running again.
I hope its not the water pump or alternator. Both have been replaced in the last 6 months, the water pump a genuine Holden part, and the alternator a recoed 50 amper from a mate of dads.
I discovered last nite that there was some vertical movement in the tail shaft uni joints, both of them, so i have given the tail shaft to a mate and two new uni joints to replace the installed uni joints.
Once i get the tail shaft back i am going to check all the bolts on the diff (I did change the centre 6 months ago) and the bolts on the gearbox, bell housing and cross member ( I replaced the rear gearbox mount about 2 months ago). The clutch still has plenty of meat on it (about 10mm so 5mm + 5mm) and the flywheel and all clutch all seems to be bolted together fine. As mentioned above i did an oil change on the gearbox on sunday nite, so from what i have told you above if the noise isn't the unis destroying themselves from lack of lubrication, my next assumption would be the thrust bearing or possibly engine mounts.
I checked the tailshaft for signs of rubbing and there was no shiny rings on the tailshaft.
Thanks again for the suggestions peoples.
I love this forum Steve
#11
_devilsadvocate_
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Posted 07 June 2006 - 09:52 PM
Many things are possible, do you have a engine fan? It could be hitting something(like the fan guard?) as the motor twists towards the right side of the car under load.
#12
rodomo
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Posted 08 June 2006 - 12:41 AM
Brake linings OK?
That thing better be OK for Winton
That thing better be OK for Winton
Edited by rodomo, 08 June 2006 - 12:42 AM.
#13
_73LJWhiteSL_
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Posted 08 June 2006 - 06:47 PM
I don't have a fan guard devils, i will check to see if the motor is pulling to one side when reving once i get the tail shaft back in. My mate still has it, he had a lot of trouble getting one of the uni joints out.
Rodomo Brake linings are fine, it doesn't quite sound like a metal on metal from brake pads being worn out. The pads on the front weren't replaced that long ago.
I am planning on getting to Winton...
Steve
Rodomo Brake linings are fine, it doesn't quite sound like a metal on metal from brake pads being worn out. The pads on the front weren't replaced that long ago.
I am planning on getting to Winton...
Steve
#14
_73LJWhiteSL_
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Posted 10 June 2006 - 11:44 AM
ALL FIXED.
Thanks for the suggestions guys. I stuck the tailshaft back in last nite with the new uni joints in it, and yes they have been pumped with grease this time and took it for a spin, down the freeway and everything, no noise or vibration.
Well I learned something now... make sure you pump grease into your uni joints.
Thanks again people.
Steve
Thanks for the suggestions guys. I stuck the tailshaft back in last nite with the new uni joints in it, and yes they have been pumped with grease this time and took it for a spin, down the freeway and everything, no noise or vibration.
Well I learned something now... make sure you pump grease into your uni joints.
Thanks again people.
Steve
#15
_Herne_
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Posted 10 June 2006 - 12:18 PM
Glad we (forum) could be of assistance 
It was the vibration that clued me onto the uni joints, been there and experienced that before, I am sure many have!
Good luck and happy, safe motoring.
Cheers
Herne
It was the vibration that clued me onto the uni joints, been there and experienced that before, I am sure many have!
Good luck and happy, safe motoring.
Cheers
Herne
#16
rodomo
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Posted 10 June 2006 - 03:25 PM
#17
_devilsadvocate_
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Posted 10 June 2006 - 04:13 PM
Glad youve got it sorted Steve.I don't have a fan guard devils, i will check to see if the motor is pulling to one side when reving once i get the tail shaft back in.
nb: the motor will only visible tilt to the right(normal) when you suddenly increase the revs....when in neutral......or when in gear when you give it more gas.
#18
_73LJWhiteSL_
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Posted 11 June 2006 - 04:54 PM
It was the vibration that clued me onto the uni joints, been there and experienced that before, I am sure many have!
Yeah Herne I just wasn't prepared to accept this suggestion straight up since it was only 12,000 miles since i replaced the uni joints... of course i never pumped them with grease so it all makes sense now.
nb: the motor will only visible tilt to the right(normal) when you suddenly increase the revs....when in neutral......or when in gear when you give it more gas.
I still haven't checked that yet but yes i know its when you suddenly increase revs in neutral. Its on the todo list.
Thanks again everyone.
Steve
Edited by 73LJWhiteSL, 11 June 2006 - 04:55 PM.
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