OK folks, I'm really scratching my head on this! I'm experiencing a unidentifiable noise on my '06 Magnum R/T that my dealership cannot figure out. I've had it in multiple times over the last couple of years and nothing has come of it.
The best I can describe it is a "warble" or a "whining" sound when accelerating between 1750 and 2500 RPM. It almost sounds like a bad bearing or something. It actually almost sounds like the howl of an owl that won't shut up! It sounds like it's coming from beyond the firewall. It only happens during the colder months (late fall through early spring). As soon as I take my foot off the accelerator, the noise stops. The noise is NOT heard during acceleration when the car is stationary (in park or neutral), only while the car is in motion. Sometimes it's louder than other times. When it's really loud, the same noise can sometimes be heard while braking (although it's a bit quieter than when accelerating, not nearly as loud but it's there). The noise happens at any speed on both low speed roads and highways. Usually, the noise won't be heard until the car has been driven for a couple minutes.
Listen to this audio clip. I'm blipping the throttle for short bursts (stuck in traffic). Each time I'm on the gas, you can hear the sound. I found that turning down the bass on my PC speakers made it easier to hear it.
Does anybody have any idea what the heck this could be?!? Please help!
Thanks so much guys and gals. I really appreciate it.
do you have a catch can?
IF so a few members on several forums have found that [including me] that it is the hose thats collapsed from the pcv to the can.
if you dont have a catch can check it any way and your pcv valve to make sure its clean and the hose from the pcv to the intake isnt soft and spongy-it will whoo like a owl-mine did and drove me crazy for weeks till i found it.
A cai will amplifi the sound
Last edited by sound&security; 01-23-2010 at 11:15 PM.
I'd be unstoppable if it wasnt for Physics & Law enforcement
I bet a wheel bearing.... easy 15 min change and once you have the wheel off and the rotor just spin the hub and it will feel like its grinding or make the noise.... may not be far enough along that you notice its the bearing...
Thanks for the responses so far. Appreciate it.
I don't have a catch can and thanks for the other suggestions.
Re. the wheel bearing, wouldn't I hear it when I'm not accelerating as well? It only happens during acceleration. No noise when the vehicle is coasting.
Re. the torque converter, that was one of my original thoughts too. The symptoms match what's stated in this TSB: http://www.wkjeeps.com/misc/LX/TSB/TSB_2100306.pdf but my vehicle's build date doesn't match the TSB.
Any other thoughts out there? I'm hoping somebody has experienced the identical noise I'm experiencing.
ive got an 06 also, also took the dealer three trips to figure out. it was worn out tension pulley, but i knew it the whole time the dealer just didnt want to believe me then the warranty ran out and they figured it out!! I said eff them.
I'm warrantied until almost 2013 so they have a good while before my warranty is up!
Thanks for the info!
Anybody else experience something similar?
I still think it is the torque converter or in the tranmission. Have you flushed and filled the trans? Even checked the level or condition of the fluid?
Without being in the car to pin point the origination of the noise it's tough to diagnose the noise from a sound clip. Have you checked all vacuum hoses and air intake hoses?
Hmm, is it the W1FE unit? Removal of these sometimes solve noises that happen upon acceleration.
Anyway, I would look towards the pulleys and/or belt before the converter. Pop the belt off, inspect it closely, spin the pulleys you can, look for a wobble or some damage to the pulley itself.
Maybe be a cracked flex plate. It sounds like intake though. Can you take it to a dyno, pop the hood and see if you can isolate the noise??.
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The first 6.1 transformation and it all went down hill from there.
08 route 66 burnout champion 07 Shindig 6.1NA winner. Willow Springs 1:42!!. 11.796 @ 117mph
I can't listen to the audio clip b/c I'm at work, but what you're describing sounds like something I'm getting too. If it is the same as mine, I'm confident it's NOT the torque converter...my torque converter already died and it was a different sound and happened at different times than this.
This sound is a gargling whine/whistle coming from the firewall area and it's starting to drive me nuts!!!
I listened to the clip. Not what mine is doing now and also doesn't sound like my torque converter went it went bad.
I have a "whine" coming from my R/T while I have the CC on and doing 60MPH, it goes away when I decelerate or accelerate. It also does this when maintaining a constant speed. (i.e. 45 or 50) When I'm under power during cruise it starts. I am wondering if it is the rear end??? The car has 13K. I did not start hearing this till a couple thousand miles ago. I am waiting for it to get worse or running out of warranty (ends in 2015) before taking it in. The whine sounds like rear gears that are not meshing correctly. I don't know if it sounds like yours as I can't hear the clip because of no speakers.