Winding down noise under hood when shutting car off

puckman77 · 10-13-2009, 01:42 PM

I've tried to figure this out on my own, but can only come up with two possibilities. When I shut the car off, I hear what sounds like a high revving component slowing down. I'm guessing either the fuel pump (which I have never heard on other cars before) or the DC motor for the VVEL. Anyone know?

junior_jam · 10-13-2009, 10:31 PM

Quote:

Originally Posted by puckman77

I've tried to figure this out on my own, but can only come up with two possibilities. When I shut the car off, I hear what sounds like a high revving component slowing down. I'm guessing either the fuel pump (which I have never heard on other cars before) or the DC motor for the VVEL. Anyone know?

I have no idea, but this is one of my favorite things about the Z. Sounds like a turbine engine shutting down.

510z · 10-13-2009, 10:53 PM

the blue ones are transformers. mine doest this too. I call him sparky, he doesnt know i know he exists.

Division · 10-13-2009, 10:55 PM

My going theory is fuel pump.

Quote:

Originally Posted by 510z

the blue ones are transformers. mine doest this too. I call him sparky, he doesnt know i know he exists.

Better go check your garage.... Sparky may be escaping, now that he knows you know he exists.

stan618 · 10-13-2009, 11:12 PM

my 03 350z did it and now my 370 too. ive heard it referred to as the "death rattle" lol... but nothing to worry about

Pharmacist · 10-13-2009, 11:56 PM

could be the radiator fan

KillerBee370 · 10-14-2009, 12:08 AM

It's the secret alien technology turbine winding down. Pretty soon someone in a black suit and sunglasses will ask you to look at a little pen with a light on it and all these troubles will go away

Red370 · 10-14-2009, 12:33 AM

I personally love the sound, its my rocket ship.

MeetJoeAsian · 10-14-2009, 01:03 AM

I guess we really have to break out the new technology in the new Nissan 370Z to really know what it has...I know with Toyota, sometimes after 15-20 minutes, you will hear a soft noise of a motor running for like 5-10 minutes...the vehicles have a computer system that once in awhile turns on to check all mechanical and electrical parts to make sure the vehicle is working properly...

With the new Prius, once the vehicle is turned of, you will hear engine still working while it draws the hot water from the car, and store it in a thermal bin so the next time you start the car, your car will have the hot water already. This is something deeply mechanical in the car that most salespeople learn but never pass onto their customer

sw1318 · 10-14-2009, 10:42 AM

Quote:

Originally Posted by Red370

I personally love the sound, its my rocket ship.

I actually love this sound too lol, sounds like a plane switching off

dszombiex · 10-14-2009, 10:44 AM

Electric radiator fan.

Division · 10-14-2009, 12:02 PM

Quote:

Originally Posted by dszombiex

Electric radiator fan.

I think its too quiet to be the fan.

10-13-2009, 01:42 PM	#1 (permalink)
puckman77 Base Member Join Date: Apr 2009 Location: Connecticut Posts: 22 Drives: 09 Z Blue AT T/S/NAV Rep Power: 16	Winding down noise under hood when shutting car off I've tried to figure this out on my own, but can only come up with two possibilities. When I shut the car off, I hear what sounds like a high revving component slowing down. I'm guessing either the fuel pump (which I have never heard on other cars before) or the DC motor for the VVEL. Anyone know?

10-13-2009, 11:12 PM	#5 (permalink)
stan618 Base Member Join Date: Jun 2009 Location: los angeles Posts: 30 Drives: 09 370z manual sport Rep Power: 16	my 03 350z did it and now my 370 too. ive heard it referred to as the "death rattle" lol... but nothing to worry about __________________ 2009 370z pearl white 6 speed sport pkg

10-14-2009, 12:33 AM	#8 (permalink)
Red370 A True Z Fanatic Join Date: Jul 2009 Location: Kaiserslautern, Germany Posts: 4,391 Drives: your mom to church Rep Power: 296	I personally love the sound, its my rocket ship. __________________ 2011 Mustang 5.0 \| 3.55's \| Lethal Performance off road H-Pipe \| Magnaflow Muffler Delete \| JLT CAI/Bama tuned 417whp/ 404 ft/lbs

10-14-2009, 01:03 AM	#9 (permalink)
MeetJoeAsian Enthusiast Member Join Date: Aug 2009 Location: Houston, TX Posts: 342 Drives: 350Z to G35c to 370Z Rep Power: 16	I guess we really have to break out the new technology in the new Nissan 370Z to really know what it has...I know with Toyota, sometimes after 15-20 minutes, you will hear a soft noise of a motor running for like 5-10 minutes...the vehicles have a computer system that once in awhile turns on to check all mechanical and electrical parts to make sure the vehicle is working properly... With the new Prius, once the vehicle is turned of, you will hear engine still working while it draws the hot water from the car, and store it in a thermal bin so the next time you start the car, your car will have the hot water already. This is something deeply mechanical in the car that most salespeople learn but never pass onto their customer __________________ http://facebook.com/meetjoeasian

10-14-2009, 10:44 AM	#11 (permalink)
dszombiex Base Member Join Date: May 2009 Location: Los Angeles Posts: 230 Drives: 09 370z MB 7AT Rep Power: 374	Electric radiator fan. __________________

10-13-2009, 10:53 PM	#3 (permalink)
510z Enthusiast Member Join Date: Mar 2009 Location: Phoenix Posts: 328 Drives: 09 370z Blue M6 Rep Power: 16	the blue ones are transformers. mine doest this too. I call him sparky, he doesnt know i know he exists.

10-13-2009, 11:56 PM	#6 (permalink)
Pharmacist A True Z Fanatic Join Date: May 2009 Location: Toronto, Ontario Posts: 1,249 Drives: 09 370z Sport 6MT Rep Power: 18	could be the radiator fan

10-14-2009, 12:08 AM	#7 (permalink)
KillerBee370 A True Z Fanatic Join Date: Mar 2009 Location: So Cal baby! Age: 51 Posts: 5,964 Drives: with passion Rep Power: 321	It's the secret alien technology turbine winding down. Pretty soon someone in a black suit and sunglasses will ask you to look at a little pen with a light on it and all these troubles will go away

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