Possible faulty waterpump in 4.5lt landcruiser 80s
Submitted: Monday, Jul 19, 2010 at 10:10
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80164
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8561
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7
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11
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Bubbles
Hi
Just been noticing a pretty distinct noise at idle from the motor and it appears to be coming from the front. Its a metallic rattle that consistent with the idle RPM. I was wondering if this is likely to be the waterpump or could it be something else that commonly goes on the cruiser? Pretty hard to diagnose exactly where its coming from due to the other noises in the engine bay and without getting my fingers ripped off by the fan. Any help will be appreciated :)
Cheers
Fil
Reply By: Member - David Will (VIC) - Monday, Jul 19, 2010 at 10:39
Monday, Jul 19, 2010 at 10:39
Hi Fil,
I would
check the idler pully, the bearings go in these.
I have a 1hz in a 1993 80 Series and have replaced this twice, I was able to knock the bearing out and get a replacement from bearing
shop for about $3.50.
Toyota wanted about $65 for a new pulley.
hope this helps
David Will
AnswerID:
424474
Follow Up By: Bubbles - Monday, Jul 19, 2010 at 10:43
Monday, Jul 19, 2010 at 10:43
Hi David,
So was there a distinct noise coming from the pump?
$59 shipped express for water pump from ebay. Might not last too long though :). But I'll re-con the old one ready for the cheapy to die.
FollowupID:
694915
Follow Up By: Member - David Will (VIC) - Monday, Jul 19, 2010 at 11:41
Monday, Jul 19, 2010 at 11:41
Hi again,
If it is the idler pulley it will properly seize or be very hard to turn and make a lot of noise.
When i did a water pump the bearing collapsed and coolant went everywhere and small fragments of metal everywhere as
well
I put an aftermarket pump in as that was all i could get at
Broken Hill and it has been in for 2 years now. But it had a plastic pump impeller compared to a metal one that came from Toyota.
If it is the pump it would be a good chance to
check and replace belts, hoses, thermostat, radiator cap and get the whole system flushed as
well.
Good luck with it,
David Will
FollowupID:
694916
Follow Up By: Bubbles - Monday, Jul 19, 2010 at 12:11
Monday, Jul 19, 2010 at 12:11
Hi David,
So was there a distinct noise coming from the pump?
$59 shipped express for water pump from ebay. Might not last too long though :). But I'll re-con the old one ready for the cheapy to die.
FollowupID:
694921
Follow Up By: Bubbles - Monday, Jul 19, 2010 at 12:11
Monday, Jul 19, 2010 at 12:11
Hi David,
So was there a distinct noise coming from the pump?
$59 shipped express for water pump from ebay. Might not last too long though :). But I'll re-con the old one ready for the cheapy to die.
FollowupID:
694922
Follow Up By: Bubbles - Monday, Jul 19, 2010 at 12:16
Monday, Jul 19, 2010 at 12:16
Damn Exploroz is freaking out. Sorry about that...
System has been flushed when I did the head 6 months ago.
So if I replace the waterpump that also fixes the pulley bearing right?
FollowupID:
694923
Follow Up By: Member - David Will (VIC) - Monday, Jul 19, 2010 at 12:29
Monday, Jul 19, 2010 at 12:29
If you replace the water pump it will all be new and that includes the bearing in the pump.
I was also saying about the idler pulluy which is a pulley that takes up slack that the fan belts run around on. It will be a pulley by its self that is only there to run the belts on so the belt can go to the next pulley eg powerstering, alternator or air con.
This pulley can sometimes seize the bearing in it as
well just make sure it is not that making all the noise.
Would be a shame to replace water pump when it is the idler pully.
I would still put new belts on if you replace anything as they will be slightly worn.
Exploroz was also playing up for me as
well.
David Will
FollowupID:
694925
Follow Up By: Bubbles - Monday, Jul 19, 2010 at 12:33
Monday, Jul 19, 2010 at 12:33
Ah rightyo. I'll
check the idler bearing when i do the waterpump. I'll definitely do the belts as
well.
Is there a chance the power steering unit could be the culprit?
FollowupID:
694926
Follow Up By: Member - David Will (VIC) - Monday, Jul 19, 2010 at 12:38
Monday, Jul 19, 2010 at 12:38
If you are not sure i would get some one else to have a look at it as it is pretty hard to guess over the web
good luck with it
David
FollowupID:
694927
Follow Up By: Member - Barnray (NSW) - Monday, Jul 19, 2010 at 12:50
Monday, Jul 19, 2010 at 12:50
Before you do any thing give the belts a spray with wd40, if the noise is still there then take off belts one at a time. Barnray
FollowupID:
694928
Follow Up By: Fab72 - Monday, Jul 19, 2010 at 12:53
Monday, Jul 19, 2010 at 12:53
Bubbles...re your comment about putting in a water pump kit while you drive around with the ebay cheapie in. Where do you get a water pump kit for a 1HZ these days? I didn't think anyone made kits anymore.
FollowupID:
694929
Follow Up By: Bubbles - Monday, Jul 19, 2010 at 13:28
Monday, Jul 19, 2010 at 13:28
Its for the 1FZ-FE not the HZ. Sorry I think Dave has the HZ.
FollowupID:
694933
Reply By: Fab72 - Monday, Jul 19, 2010 at 12:49
Monday, Jul 19, 2010 at 12:49
Take the drive belts off one at a time and see when the noise disappears. It could be A/C compressor bearings, power steering pump etc.
When you have it narrowed down to one belt, spin each pulley that is driven by that belt and a "feel" will probably be all you need to confirm which one it is. The suspect pulley will give you a graunchy feel.
Then replace what ever is driven by that pulley.
AnswerID:
424480
Reply By: Cruiser 2091 - Monday, Jul 19, 2010 at 14:58
Monday, Jul 19, 2010 at 14:58
Hi Bubbles.
The first step is to try and diagnose the problem, try and identify where exactly the noise is comming from.
To do this use a very long screwdriver as a stethescope, hold the handle to your ear and press the blade against the suspect parts.
As mentioned earlier it could be the water pump, idler pulley or alternator bearings.
If your 80 series hasn't already had a new water pump then it wouldn't hurt to replace it anyway (under $200 for genuine Toyota) Then while you have the belts off you can
check the idler pulley and the alternator easilly.
While you are at it and while the coolant is out, for a few extra dollars you could fit a new thermostat and radiator cap.
All these parts are very easily replaced.
Regards Cruiser
AnswerID:
424488
Reply By: Member - david m2 (SA) - Monday, Jul 19, 2010 at 20:26
Monday, Jul 19, 2010 at 20:26
Just grab the pully on the front of the pump and give it a wiggle. If is the pump you may have quite a bit of play.
AnswerID:
424535
Reply By: Member - Rob S (NSW) - Monday, Jul 19, 2010 at 20:49
Monday, Jul 19, 2010 at 20:49
All of the above,
but the air conditioner nose/pulley bearing is very common to fail, and more than likely chew out the housing meaning a new air con compressor.
slip of the air con belt and run it to
test it.
if your going to change the water pump and pulley bearings and if the air con is ok but has a few klm on it change the nose bearing as it will save you heaps in the long run.
Rob.
AnswerID:
424539
Reply By: mechpete - Tuesday, Jul 20, 2010 at 13:44
Tuesday, Jul 20, 2010 at 13:44
why don,t you take the drive belt off and start it you will have plenty of time to find the noise before it gets hot
mechpete
AnswerID:
424610
Reply By: Bubbles - Monday, Jul 26, 2010 at 12:16
Monday, Jul 26, 2010 at 12:16
Looks like it is the AC bearing. Did the water pump and fan clutch anyway while I was checking things out. Also both idler pulleys are a bit rough so I will change the bearings over on them when I get a chance to.
Anyone know the bearing number for the AC compressor?
Cheers
Fil
PS Aftermarket waterpump didn't come with the stubs so had go source them (Datsun 1600 exhaust studs!) and the fan clutch didn't centre on the waterpump so had to manually do it with a dial gauge...
AnswerID:
425261