Well, the Truck has an Issue and I need your Assistance

[HIROLA]

So, just recently, my 2006 H3 starting making a horrible sound around 2K RPMs. Usually when I take my foot off the gas, but not always. It happens right after start up and also a while after driving. I have my suspicions as to what the issue is but I wanted to see what you all think and if you have heard this sound before.

The sound seems to be coming from the front of the engine. The video is with the truck in park and my buddy revving the engine. The truck is at 97K miles. No codes as of this point and no loss of power, just an annoying sound. I also can't find any loose bolts under the truck.

Starting about the 14 second mark, you can really hear it. 36 second mark the wind decided to pick up but you can hear it again around 48.

http://www.youtube.com/watch?v=QgND-Mwx10Y&feature=youtu.be

Any help or insight would be greatly appreciated.

 

[Happy Hummer]

Wow!

That is one interesting noise you have captured in the video.

I'm guessing pulley related, compressor, fan... but hey the service call is free so don't expect much...lol!

Albeit I could also be horribly wrong...hahha~

Chris

 

[Happy Hummer]

It is always easier to figure it out when in person. A steering pump can also cause a he&l of a racket.

Chris

 

[06 H3]

damn thats a new noise...

 

[Pappibri]

My timing chain was making some horrible noise so that and the tensioner got changed.. I would just guess the timing chain, but I am no mechanic.. Good Luck D, and hope you figure it out and it dont set you back to much.:huh:

 

[f5moab]

I would go with a tensioner or idler pulley is shot due to the noise starts to go away with higher RPMs and after warming up.
Doubt if it is the compressor, since I'm assuming A/C is not on and causes very little strain on the pulley bearing since it is basically free wheeling (unless AC is On).

Remove the serpentine belt at night and start it up the next morning (or remove it in the AM and start up). If noise is still there it is internal, if noise is gone, it is an exterior pulley. Don't run it for long since the water pump is not pumping, generator is not generating.

 

[ArtHummer]

From the sound of it i would bet on the Power Steering Pump...

You can check the external pulleys (pensioner and idle) by spraying some wd40 on to where the bearing is at. If the noise will go away for few minuts than the bearing for that pulley is bad. But that does not sound like a bearing to me.

 

[HIROLA]

Thanks all, I'll try removing the belt. My first thought is timing chain so I'm happy to test these other options first.

 

[Dennis]

From the sound in the video..I'd say it is either the Idler and/or Tensioner Pulleys or maybe the Water Pump...Do as f5 suggests and that will for sure detirmine if it is one of those items..I just changed mine out a couple of days ago....

 

[HIROLA]

So, for all of today, I attempted to replicate the sounds I heard yesterday. No such luck however. Perhaps the gremlins only come out after dark and when it is a bit colder outside. I'll have to test again tonight but I find it odd that I can't replicate the issue.

 

[cbetts]

SOunds about the right amount of miles for the tensioner. If you take the belt off, spin the power steering and water pump pulleys and see if you have any resistance or slop.

 

[HIROLA]

Well, the belt tensioner went out on my way home from MI a couple months ago. Tomorrow, I'll be pulling the belt off to play with some pulleys. I have already ordered a new power steering pump/pulley/hoses and a new Idler pulley. I figure, they will go bad at some point and I'm not looking to get rid of my truck just yet.

 

[HIROLA]

So, it doesn't look like I need all of those new parts that I ordered just yet. It appears as though the winner of "Guess what is causing this horrific sound" goes to those of you who suggested Water Pump!

A week after first hearing the sound, the coolant started leaking from around the pulleys. I also noticed that the water pump pulley started to wobble. So, thank you to those of you who played and assisted.
Now it is time to change the water pump. I’ll try to put together a “how to” if I am successful!

P.S. The dealer wants $800-900 for the job. F THAT!! I picked up parts and coolant for under $100.