Strange SV6 Engine noise (with video) - please help

[thebulk]

Guys/Gals, Its still there - I removed the starter motor and checked it out - all spring return mechanisms are fine. I had the power steering pump replaced today also. The noise is still there - any other suggestions????

This is really frustrating me now!!!!

Here's a video of my SV6 and the annoying engine noise associated. The engine is warm in the video so the noise is a lot less intense than when its cold but if you could help me to identify what or where it could be coming from that would be a big help. I can't figure it out

Sounds like a dieing sheep!!!!!

Video link - YouTube - SV6 Noise

Thanks again guys and girls
Andrew

[oosty85]

sounds like a chainsaw half thru a tree...not sure mate. Wierd noise tho

[andyman]

could possibly be the starter throw out staying engaged or jammed

[Troy711]

^^^Starter was what I would have suggested

[thebulk]

Just took the starter motor out and apart and the spring return mechanism seems to be working fine........ any other suggestions??

[GTRwilson]

friend had EXACT same sound in his stock VS commodore V6. Turned out to be one of the bearings on the timing belt i think? not sure how to explain as i dont know the exact name of the part lol

attached a photo of what i believe is what died on my mates car. Well it wasnt completely ****ed, just on the way out, and made that noise. then one day it finally let go.

[thebulk]

Thanks heaps GTR Wilson, That looks like its in the same position as the power steering pump? Do you know if it was the power steering pump bearings??

I've got a hunch that it is the power steering pump...... anyone else care to jump in here?

Cheers
Andrew

[vy-346]

+1 for power steering pump. Have you run it low on oil ever? Or is it low on oil? Sounds like its got air in it because when i had my sv6 i lost all my P/S fluid and it made a very similar noise. Maybe take the belt off and spin the pulley.

[thebulk]

hey vy346 - any tips on removing the belt? I've looked on here and can't find any info for the vz

[thebulk]

never mind just figured it out- found the very handy3/4 inch ratchet hole in the tensioner. the power steering pump bearing is shot - thankyou very much to GTR and vy - you guys have saved me a lot of rooting around.

cheers
andrew

[vy-346]

No probs mate, never done a pump on the alloytec so not sure what you are in for. Have you got the belt off yet?
EDIT: just read it again you have the belt off.

[thebulk]

Guys/Gals, Its still there - I removed the starter motor and checked it out - all spring return mechanisms are fine. I had the power steering pump replaced today also. The noise is still there - any other suggestions????

This is really frustrating me now!!!!

[andyman]

hmm, its too quick to be a valve train noise, to me it still sounds like the starter overrun clutch, did you hook power up the the starter in a vice?

get a stethoscope or a large shafted screw driver and listen around different parts of the motor until you find the source of the noise,

[thebulk]

You may be right andyman - i didn't actually run the starter motor I just pulled it apart and it looked good. Maybe the starter circuit is staying engaged while the engine is running? Would the starter not be completely burnt out by now though??

[thebulk]

when you say use a long shafted screw driver to find the source of the noise - I'm not sure what you mean......

[andyman]

You may be right andyman - i didn't actually run the starter motor I just pulled it apart and it looked good. Maybe the starter circuit is staying engaged while the engine is running? Would the starter not be completely burnt out by now though??

nah they just over run, they have a clutch in them to protect them, but yes, if it was continuously getting power to the solenoid and it was running, it would burn out after a while,

does the noise stop at all when it running? or is it all the time?,


try picking up the noise with a big screw driver, (obviously put your ear against the hand grip end, and put the driver ends next to the component you want to listen to),

or use a stethoscope

[thebulk]

love your work with the screwdriver - the noise is constant - never goes away...... NEVER!!!!!

I will poke around with a screwdriver and hopefully come up with something....

[GTRwilson]

Have you looked into replacing the actual bearing that i circled? thats what died in the mates. from memory wasnt very expensive at all.

[andyman]

Have you looked into replacing the actual bearing that i circled? thats what died in the mates. from memory wasnt very expensive at all.

pulleys arnt in those spots on an alloytec mate,

diagnose before replacing - always, you will go broke if you do that all the time, not saying it isnt a bearing but, its no help saying replace this without diagnosing first

[GTRwilson]

Well ive never looked at the alloytechs up close but i know that was the problem with the ecotec. Anyway you can test the part? say swap it with someone elses? ehh i dunno.

[jet-6]

Have you started the engine with the belt off, that would be a good start!

[thebulk]

Have you started the engine with the belt off, that would be a good start!

Ok - so you can do that?

[andyman]

Ok - so you can do that?

,

yeah do it with a cold motor, and dont run it for too long, your only seeing if its a pulley related problem

[baracuda]

if it was a startermotor constantly engaged the internals be rooted by now and the comutator woud have flared out internally.initialy sounds like you got maybe a sensor or something plastic hitting a pulley or belt or coud even be a wire from wiring harness running up against a moving part.

[thebulk]

I found the problem

Now I just need to figure out how to fix it

The bearing wheel that bends the belt back between the A/C and the power steering pump is the cause. Can I repair the bearing myself or with the help of Supercheap Auto or do I need to wait until monday for holden parts to open and get a new one?

Thankyou to everybody for your ongoing help