Whining Engine Noise at 124k - Nissan Murano

biggun · 12-21-2011, 01:20 PM

My Mo is at approx. 124K miles and has recently started to make a whining noise. My first thought was the CVT or TC, but the noiuse increases when I rev the engine and is still there when in neutral. It almost sounds like I have a turbo charger under the hood.

My first guess (or hope) is that it is a pulley bearing (i.e., alternator, tensioner, etc.). Anyone have any other thoughts or experience on this noise. I couldn't find a match of my problem with a forum search.

All in all, the Mo is running like a champ minus the noise.

-biggun

**zebelkhan** · 12-21-2011, 05:38 PM

You can temporarily eliminate pulley or drive belt noise by spraying water on them. Try that and hopefully it will be just a pulley or a belt.

nitely · 12-21-2011, 11:00 PM

Have you checked your TC fluid level ever? Maybe timing chain related?

biggun · 12-22-2011, 01:16 PM

Z - I do not think that it is a belt. Mine were replaced about a year ago or so. Plus, it does not sound like a belt. Best way to describe it is the noise a power steering pump would make in older cars when you would turn the wheel - if that make sense. I was leaning towards pulley bearings as a result - thinkning possibly the steering pump.

Nite - I'm not sure about the TC since the sound is still present in neutral.

nipsirc · 12-22-2011, 01:52 PM

could be the "air intake control" or the "belt tensioner" or an "AC clutch"

nitely · 12-22-2011, 03:34 PM

If you suspect the pulley bearing, look closely to the idler pulley bearing. I had a very bad experience with it when I had a dealer change my belt about 4 years back. Idiots over tighten the belt and messed up the idler pulley bearing. A month after the belt change I started to have bearing noise at idle and slow speed. They fix that under warranty but less than a year later the idler pulley bracket just split into 2. I think it was due to the initial over tightening of the belt that caused it. They got me on that one though. I hated them for it. Anyways, the noise was more noticeable on stop/idle and low speed. Can't remember if the noise increase in speed.

murano2004 · 12-23-2011, 01:32 PM

Mine does it when first started sounds like something is loose or sounds like a whininh noise also my mo has 73k miles on it

colscoreys · 01-03-2012, 10:10 PM

I had the same issue. I put in some Power Steering Fluid, and it solved the problem. I think I have a small leak, but I am not sweating it at this point.

biggun · 01-15-2012, 11:34 AM

Well, after approx. 3 weeks, I just got the battery/brake light indication, which is most likely the alternator. I believe that was the sound I was hearing. My original alternator was replaced under the orginal recall back in 2005/6ish. So I guess a 6 year old alternator is not out of the question. Everything is runing fine, with no limp mode yet.

I just hope it does not entail the wire connection issue that others have experienced. Planning to call the dealer on Monday for an appointment.

-biggun

12-21-2011, 01:20 PM	#1 (permalink)
biggun Registered User Join Date: May 2005 Location: Granite State Posts: 1,038	Whining Engine Noise at 124k My Mo is at approx. 124K miles and has recently started to make a whining noise. My first thought was the CVT or TC, but the noiuse increases when I rev the engine and is still there when in neutral. It almost sounds like I have a turbo charger under the hood. My first guess (or hope) is that it is a pulley bearing (i.e., alternator, tensioner, etc.). Anyone have any other thoughts or experience on this noise. I couldn't find a match of my problem with a forum search. All in all, the Mo is running like a champ minus the noise. -biggun __________________ 05 Merlot AWD S w/Convenience Package, Tow Package, Sirius Radio Upgrades: - OEM Homelink Mirror, Tweeters, FOG (on with parklight) - 2007 OEM Chrome HVAC Knobs, Alum. Rear Protector, Wheels - Alum. Pedals & LED Lights in Vents Future Upgrades (hopefully some day): - LED Taillight Upgrade (have parts for control board) - OEM HID Headlights (have parts)

12-21-2011, 05:38 PM	#2 (permalink)
zebelkhan Moderator Join Date: Aug 2004 Location: Morgan Hill, Ca Posts: 6,042	You can temporarily eliminate pulley or drive belt noise by spraying water on them. Try that and hopefully it will be just a pulley or a belt. __________________ 2004 SL AWD - Super Black - Leather Package (Café latte) - Tow Package - Floor Mats - Splash Guards - Cargo Area Protector - Rear Bumper Protector - Front Window Tint - Dawn Color Matched Body Side Molding – Day Time Running Lights - PAC-NIS1 Aux Audio input - Pressure Pro TPMS and Anti Theft Sensor Locks - 7" Xenarc VGA Touchscreen - Compaq EVO e-PC 2.0 GHz Pentium 4 Carputer with 120GB HD, DSATX PSU / Shutdown Controller, Road Runner Front End, iGuidance 3.0 Navigation, DVD player, Internet access, XM satellite radio, Deluo GPS receiver, Linksys WiFi Antenna, TERK XM antenna - Tweeter 22uF CAP mod - Magnetbra - Custom Backup Camera - Aries Polished Stainless Steel Sidestep (nerf) Bars - Euro-Tech Nudge Bar - Homemade Lower Grill Cover - Auxiliary Projection Fog Lamps - Aluminum Fuel Tank Shields - Wade Window Deflectors - Nissan Sunroof Deflector - Scosche UBRH Bluetooth Hands-Free Car Kit

12-22-2011, 01:16 PM	#4 (permalink)
biggun Registered User Join Date: May 2005 Location: Granite State Posts: 1,038	Z - I do not think that it is a belt. Mine were replaced about a year ago or so. Plus, it does not sound like a belt. Best way to describe it is the noise a power steering pump would make in older cars when you would turn the wheel - if that make sense. I was leaning towards pulley bearings as a result - thinkning possibly the steering pump. Nite - I'm not sure about the TC since the sound is still present in neutral. __________________ 05 Merlot AWD S w/Convenience Package, Tow Package, Sirius Radio Upgrades: - OEM Homelink Mirror, Tweeters, FOG (on with parklight) - 2007 OEM Chrome HVAC Knobs, Alum. Rear Protector, Wheels - Alum. Pedals & LED Lights in Vents Future Upgrades (hopefully some day): - LED Taillight Upgrade (have parts for control board) - OEM HID Headlights (have parts)

01-03-2012, 10:10 PM	#8 (permalink)
colscoreys Registered User Join Date: Dec 2011 Location: Ohio Posts: 4	I had the same issue. I put in some Power Steering Fluid, and it solved the problem. I think I have a small leak, but I am not sweating it at this point. __________________ Dave 2007 Murano S 200,000 miles Stock everything.....I don't put extra $ into cars!

01-15-2012, 11:34 AM	#9 (permalink)
biggun Registered User Join Date: May 2005 Location: Granite State Posts: 1,038	Well, after approx. 3 weeks, I just got the battery/brake light indication, which is most likely the alternator. I believe that was the sound I was hearing. My original alternator was replaced under the orginal recall back in 2005/6ish. So I guess a 6 year old alternator is not out of the question. Everything is runing fine, with no limp mode yet. I just hope it does not entail the wire connection issue that others have experienced. Planning to call the dealer on Monday for an appointment. -biggun __________________ 05 Merlot AWD S w/Convenience Package, Tow Package, Sirius Radio Upgrades: - OEM Homelink Mirror, Tweeters, FOG (on with parklight) - 2007 OEM Chrome HVAC Knobs, Alum. Rear Protector, Wheels - Alum. Pedals & LED Lights in Vents Future Upgrades (hopefully some day): - LED Taillight Upgrade (have parts for control board) - OEM HID Headlights (have parts)

12-21-2011, 11:00 PM	#3 (permalink)
nitely Registered User Join Date: Aug 2004 Posts: 1,418	Have you checked your TC fluid level ever? Maybe timing chain related?

12-22-2011, 01:52 PM	#5 (permalink)
nipsirc Registered User Join Date: Jan 2007 Location: Toronto ON Canada Posts: 288	could be the "air intake control" or the "belt tensioner" or an "AC clutch"

12-22-2011, 03:34 PM	#6 (permalink)
nitely Registered User Join Date: Aug 2004 Posts: 1,418	If you suspect the pulley bearing, look closely to the idler pulley bearing. I had a very bad experience with it when I had a dealer change my belt about 4 years back. Idiots over tighten the belt and messed up the idler pulley bearing. A month after the belt change I started to have bearing noise at idle and slow speed. They fix that under warranty but less than a year later the idler pulley bracket just split into 2. I think it was due to the initial over tightening of the belt that caused it. They got me on that one though. I hated them for it. Anyways, the noise was more noticeable on stop/idle and low speed. Can't remember if the noise increase in speed.

12-23-2011, 01:32 PM	#7 (permalink)
murano2004 Registered User Join Date: Apr 2011 Posts: 77	Mine does it when first started sounds like something is loose or sounds like a whininh noise also my mo has 73k miles on it

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