Whining from engine bay

jcasti07 · 05-06-2014, 12:29 PM

After some spirited driving, I begin to notice a slight whining sound coming from the engine bay at low RPM's. Sounds maybe like belts? I don't know. Can y'all chime in? Thanks

jcosta79 · 05-06-2014, 12:31 PM

Show this to your engine bay:

JARblue · 05-06-2014, 12:32 PM

There are so many noises that people complain about that are completely normal for this engine that I'm half tempted to just tell you it's normal and be done with it.

Inspect your belts if you suspect them. An audio clip is very helpful if you're looking for interweb diagnostics.

kenchan · 05-06-2014, 12:37 PM

also post up a few picts of this whining. that helps too..

my2004Z · 05-06-2014, 02:00 PM

Looks like you're getting some productive responses...

I've never had a noticeable whining sound from the engine bay of my 2009 7AT after even the most aggressive sustained driving. Were you poking around in there before the spirited driving? Did you hit any serious bumps or get airborne at any time? Check belt, hoses, and piping.

DavidZ370 · 05-06-2014, 02:01 PM

Hmm seems normal was this noise not present before?

7speed · 05-06-2014, 02:09 PM

Could be throttle bodies that is normal. Could be power steering, my mom has 13 Altima which had a sound to it, Nissan doesn't have a fix but the dealer heard people complain about this before and put some kind of shim in between and it doesn't cry anymore. ECM has a high pitch that I think people complained about before, try searching.

Elan · 05-06-2014, 03:00 PM

My engine has a little whine to it. It's normal.

kenchan · 05-06-2014, 03:04 PM

Quote:

Originally Posted by Elan

My engine has a little whine to it. It's normal.

not a productive enough response...

Fuzzzy · 05-06-2014, 05:11 PM

Are you sure it's not from the passenger seat? That is the source of most of mine.

onzedge · 05-07-2014, 10:31 AM

Quote:

Originally Posted by kenchan

also post up a few picts of this whining. that helps too..

SouthArk370Z · 05-07-2014, 11:00 AM

Probably normal. Could be PS pump, alternator, injectors, TB actuators, or many other things that tend to whine on modern engines. Use something like a piece of flexible tubing held to your ear to pinpoint the source. Be careful not to let tubing, clothing, body parts, &c come in contact with moving/hot parts.

A sound clip would help with remote troubleshooting. What you call a "whine" others might call a "buzz" or "whirr."

JARblue · 05-07-2014, 11:12 AM

Have you checked to see whether someone left a baby under your hood?

onzedge · 05-07-2014, 11:53 AM

Quote:

Originally Posted by JARblue

Have you checked to see whether someone left a baby under your hood?

jaedub · 05-07-2014, 04:00 PM

Are you sure you didnt accidentally install a supercharger?

05-06-2014, 12:29 PM	#1 (permalink)
jcasti07 Base Member Join Date: Feb 2012 Location: El Paso Posts: 171 Drives: red '15 Mustang GT Rep Power: 13	Whining from engine bay After some spirited driving, I begin to notice a slight whining sound coming from the engine bay at low RPM's. Sounds maybe like belts? I don't know. Can y'all chime in? Thanks

05-06-2014, 12:31 PM	#2 (permalink)
jcosta79 A True Z Fanatic Join Date: Jul 2012 Location: N/A Posts: 1,430 Drives: N/A Rep Power: 14	Show this to your engine bay: DIGItonium, onzedge and ckim64 like this. __________________ 2012 PW NISMO #0559 - GT Spec Brace Kit - Swift Springs - ARK TP & Invidia CBE K&N Intake - UpRev Tune - 15mm Z1 Spacers & Studs - StopTech Slotted Rotors & SS Lines - ZSpeed CMAK with Stage 2 Clutch and Lightweight Flywheel

05-06-2014, 12:32 PM	#3 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,449 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	There are so many noises that people complain about that are completely normal for this engine that I'm half tempted to just tell you it's normal and be done with it. Inspect your belts if you suspect them. An audio clip is very helpful if you're looking for interweb diagnostics. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

05-06-2014, 12:37 PM	#4 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141520	also post up a few picts of this whining. that helps too.. onzedge and mag_black like this.

05-06-2014, 02:09 PM	#7 (permalink)
7speed Track Member Join Date: Jan 2013 Location: Dallas Posts: 697 Drives: 09 370 sports clone Rep Power: 13	Could be throttle bodies that is normal. Could be power steering, my mom has 13 Altima which had a sound to it, Nissan doesn't have a fix but the dealer heard people complain about this before and put some kind of shim in between and it doesn't cry anymore. ECM has a high pitch that I think people complained about before, try searching. __________________ 09 370z 6spd traded 1/12/15 for 15 Challenger RT 6spd

05-06-2014, 02:00 PM	#5 (permalink)
my2004Z Enthusiast Member Join Date: Apr 2009 Location: New Mexico, USA Posts: 285 Drives: 09' 370Z w/Sport 7AT Rep Power: 37	Looks like you're getting some productive responses... I've never had a noticeable whining sound from the engine bay of my 2009 7AT after even the most aggressive sustained driving. Were you poking around in there before the spirited driving? Did you hit any serious bumps or get airborne at any time? Check belt, hoses, and piping.

05-06-2014, 02:01 PM	#6 (permalink)
DavidZ370 A True Z Fanatic Join Date: Oct 2013 Location: [= Posts: 1,065 Drives: 17' CWP STI Rep Power: 22	Hmm seems normal was this noise not present before?

05-06-2014, 03:00 PM	#8 (permalink)
Elan Track Member Join Date: May 2013 Location: Alpharetta, GA Posts: 906 Drives: Airplanes Rep Power: 15	My engine has a little whine to it. It's normal. __________________ 2009 370Z NISMO #477 \| AAM Competition Short Tails \| AAM Competition HFCs \| K&N Typhoon CAI \| Kenwood DPX300U \| Rockford Fosgate PRIME R300-4 \| Rockford Fosgate Punch P165 \| Rockford Fosgate Punch P300-12 \| Polk Audio db1001 \| 15% Tints \| GTR Start Button \|

05-06-2014, 05:11 PM	#10 (permalink)
Fuzzzy Track Member Join Date: Mar 2014 Location: MS Posts: 875 Drives: 2014 370Z 7AT MR Rep Power: 21860	Are you sure it's not from the passenger seat? That is the source of most of mine. NickTurnon, carmelvalleyZ, Fountainhead and 1 others like this.

05-07-2014, 11:00 AM	#12 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	Probably normal. Could be PS pump, alternator, injectors, TB actuators, or many other things that tend to whine on modern engines. Use something like a piece of flexible tubing held to your ear to pinpoint the source. Be careful not to let tubing, clothing, body parts, &c come in contact with moving/hot parts. A sound clip would help with remote troubleshooting. What you call a "whine" others might call a "buzz" or "whirr." __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

05-07-2014, 11:12 AM	#13 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,449 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Have you checked to see whether someone left a baby under your hood? onzedge likes this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

05-07-2014, 04:00 PM	#15 (permalink)
jaedub Track Member Join Date: Aug 2010 Location: Los Angeles Posts: 906 Drives: 2010 Black 370Z MT Rep Power: 304	Are you sure you didnt accidentally install a supercharger?

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