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  #1  
Old 01-02-2012, 12:21 PM
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Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

All - just curious if you all notice this noise when cruising at interstate speeds? It's not all that loud, but its like a dog whistle or something, and it grows annoying after a while.

I know Jimbo posted something about a whine that went away. I was hoping mine was going to do the same, but not yet (1300 miles). Dealer initially told me that they all have a little whine, but he hasn't actually heard this yet.

Do others w/ V6 hear this? Sounds almost like differential whine, but not sure. If you click on the image below, the video should start. Noise starts at about the 15 sec mark, my apologies for the music...




Still love the truck.
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Old 01-02-2012, 01:00 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

I had the same noise, but not nearly as loud. It occurred during light acceleration and on slight inclines at hwy speed. It went away at about 2500 miles. Hopefully, yours will too.
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Old 01-02-2012, 01:05 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

That is a weird sound. Sounds like aliens are trying to make contact with you. Hope you get it resolved soon.
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Old 01-02-2012, 01:11 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

off topic, nice camera, from cell phone? - what kind?
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Old 01-02-2012, 01:48 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

Thanks - Dealer just called after I sent them this video and asked that I bring it in for them to ride along.

Video was shot with a Panasonic Lumix ZS7, then resized/shrunk with Handbrake so as to make for a much smaller file
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Old 01-02-2012, 07:16 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

I have a 2012 Overland V6 and it doesn't ever make that high pitched whine - when I first got it I thought I was getting tire noise and vibration, but it was due to the road surface I was on.

Good luck in getting that tackled, sounds like your dealership is working with you though.
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Old 01-02-2012, 09:13 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

I have reported a similar post on Jeep Garage in the past. I couldn't describe the sound but it sounds exactly the same as your video. The difference with my "12 JGC Overland" is the sound appears while I am making a right hand curve going between 25 to 35 mph. It never appears any other time. In fact if I turn around and follow the same curve but turn left the sound does not appear. Thanks for posting this video.
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Old 01-02-2012, 09:34 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

Dealer thinks it is gear whine from transmission. They are looking into whether there are any engineering reports on this issue and we will go from there. Unfortunately, it didn't do it much or as loud on the ride-along, but they at least acknowledged the noise and the video. Their position is that some noise is normal, but if it as loud as the video, then that's probably more than normal (although not indicative of any sort of impending or likely failure). Sounds like they are willing to take the transmission apart if I want to push the issue... we'll see how it goes.
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Old 01-02-2012, 10:16 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

Exactly what's going on with mine. You can usually hear it when you step on the gas like driving around the parking lot...stop, go, stop, etc. Also at hwy speeds, it whines the first few secs when I speed up but goes away. I don't think it's as loud as yours since I can't hear it from the passenger's side with my wife driving.
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Old 01-03-2012, 06:46 AM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

Mine also does it but when I give it a bit of throttle it goes away. When I lift off the gas it comes back. I am thinking it could be a noisey PVC valve. It will be on my list of issues when I take it in for an oil change.
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Old 01-03-2012, 07:15 AM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

Mine does it as well but it's a lower tone than that...plan on bringing it up at some point.
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Old 01-03-2012, 05:46 PM
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Re: Light Throttle Whistle / Whine - V6 / QuadraTrac I - With VIDEO

Quote:
Originally Posted by Palmetto View Post
Dealer thinks it is gear whine from transmission. They are looking into whether there are any engineering reports on this issue and we will go from there. Unfortunately, it didn't do it much or as loud on the ride-along, but they at least acknowledged the noise and the video. Their position is that some noise is normal, but if it as loud as the video, then that's probably more than normal (although not indicative of any sort of impending or likely failure). Sounds like they are willing to take the transmission apart if I want to push the issue... we'll see how it goes.
If it is from the transmission check the transmission temperature on the EVIC when the whine occurs. This will help with reproducing the whine if temperature dependent. Other causes could low power steering reservoir. Since it is colder the volume may be lower.
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