Does not like to wake up

J.B. · 10-12-2010, 07:29 PM

I am new to the Z world with the recent purchase of my 370 and I am very happy I joined. I do have a question about start up in the morning it seems to sound a bit rough for about 10 seconds and then it sounds just fine. I do remember when I was at the dealer we started 2 other Z’s and they sounded the same as mine. Is this normal or is it a break in thing I look forward to the response to this question and many more because this is a great site to go to for all things Z

halogodx · 10-12-2010, 07:43 PM

The reason it sounds louder is because the engine run's at a slightly higher RPM to warm up on a cold day. Usually normal warm day it'll run at about 1000 RPM and on cold day 1300 RPM

J.B. · 10-12-2010, 07:53 PM

Thanks for the reply it is not so much the RPM level but the sound of the motor at start up
it sounds like there is no oil in the top end and then after about 10 seconds it sounds great.

NewYorkJon34 · 10-12-2010, 08:20 PM

Are you new to the world of sports cars or just the Z, cus it's pretty common with high performance vehicles.

AK370Z · 10-12-2010, 08:29 PM

Quote:

Originally Posted by J.B.

I am new to the Z world with the recent purchase of my 370 and I am very happy I joined. I do have a question about start up in the morning it seems to sound a bit rough for about 10 seconds and then it sounds just fine. I do remember when I was at the dealer we started 2 other Z’s and they sounded the same as mine. Is this normal or is it a break in thing I look forward to the response to this question and many more because this is a great site to go to for all things Z

VERY normal. Keep driving the Z

TreeSemdyZee · 10-12-2010, 09:52 PM

Dry engine. Once the oil and coolant gets fully distributed through the systems, the engine quiets.

6MT · 10-12-2010, 09:54 PM

Quote:

Originally Posted by AK370Z

VERY normal. Keep driving the Z

Yep!

vividracing · 10-12-2010, 10:16 PM

congrats on the Z and welcome to the forum! Hope we answered your question!

J.B. · 10-13-2010, 09:16 AM

Thanks guys for the info
Yes I am some what new to the sports car world in 06 I purchased a new Eclipse GT for my wife but needless to say it was no where near the car that this is. No offence to the Mits guys it was a good car but it is not apples to apples. I gotta say that this car makes me feel smart,all that you get for the price that you pay is outstanding. Thanks again for the help with this question and I look forward to talking with you guys soon.

NewYorkJon34 · 10-13-2010, 01:36 PM

Ya buying a 370z is one of the smartest decisions you could make

Jeffblue · 10-13-2010, 01:44 PM

think of it like turning on a computer. it has to boot up, and do its thing.

Q8y_drifter · 10-13-2010, 08:25 PM

The VQ's seem to be a bit louder/rougher at start up than most engines I've heard. My dad's Xterra (VQ40DE) kinda sounds a little rough at start up but quiets down after a few seconds. My HR sedan is the same. His older Pathfinder (VG33DE) was noticeably quieter.

ROC1ROB · 10-14-2010, 09:59 AM

It's just all the marbles falling into place.

6SPD_FTW · 10-14-2010, 11:38 PM

I've noticed the VQ37VHR being very rough for the first 15 or 20 seconds on a cold start. It has NOTHING to do with how high it is idling. I'm pretty sure it has something to do with the VVEL. Nissan has probably programmed it to do something bizarre on cold starts for better emissions. The exhaust note is so rough sounding....and then it just slowly smooths out and sounds fine.

It's also real bizarre that if you tap the gas (even slightly), the engine revs WAY up....and stays at like 3000rpm for a few seconds. Even when letting off the throttle, it still stays revved up there for a few seconds. Again, why I say that it has something to do with how the VVEL/timing advance is programmed to reduce hydrocarbon output from the tailpipe.

Late,
Trav

spearfish25 · 10-15-2010, 02:24 PM

And check your oil level at least every week or two.

10-12-2010, 07:29 PM	#1 (permalink)
J.B. Base Member Join Date: Oct 2010 Location: So Cal Posts: 3 Drives: 2010 370Z Sport Pkg Rep Power: 15	Does not like to wake up I am new to the Z world with the recent purchase of my 370 and I am very happy I joined. I do have a question about start up in the morning it seems to sound a bit rough for about 10 seconds and then it sounds just fine. I do remember when I was at the dealer we started 2 other Z’s and they sounded the same as mine. Is this normal or is it a break in thing I look forward to the response to this question and many more because this is a great site to go to for all things Z

10-12-2010, 10:16 PM	#8 (permalink)
vividracing The370Z.com Sponsor Join Date: Jun 2009 Location: Gilbert, AZ Age: 38 Posts: 7,306 Drives: 350Z,370Z,GTR Rep Power: 39	congrats on the Z and welcome to the forum! Hope we answered your question! __________________ Rocky @ Vivid ♦ 480.966.3040 x236 ♦ Rocky@vividracing.com Email, PM, or call me directly for aggressive The370Z.com member pricing!!!

10-13-2010, 08:25 PM	#12 (permalink)
Q8y_drifter Enthusiast Member Join Date: Mar 2010 Location: Kuwait Posts: 306 Drives: 08 Infiniti G35 5AT Rep Power: 15	The VQ's seem to be a bit louder/rougher at start up than most engines I've heard. My dad's Xterra (VQ40DE) kinda sounds a little rough at start up but quiets down after a few seconds. My HR sedan is the same. His older Pathfinder (VG33DE) was noticeably quieter. __________________ 08 G35 5AT Sedan \| Stillen CBE \| Invidia HFC \| Injen CAI \| Uprev Tune \| Akebono BBK \| Tanabe Coilovers \| Hotchkis Sway Bars \| GTSpec FSB \| Black Headlights & Grille \| Volk GT-F Wheels \| Hankook V12 Evo Tires

10-15-2010, 02:24 PM	#15 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	And check your oil level at least every week or two. __________________ 2013 Cadillac V-Wagon, RIP Z

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10-12-2010, 07:43 PM	#2 (permalink)
halogodx Base Member Join Date: Sep 2009 Location: daytona beach Posts: 93 Drives: 09 nissan 370z 7AT Rep Power: 16	The reason it sounds louder is because the engine run's at a slightly higher RPM to warm up on a cold day. Usually normal warm day it'll run at about 1000 RPM and on cold day 1300 RPM

10-12-2010, 07:53 PM	#3 (permalink)
J.B. Base Member Join Date: Oct 2010 Location: So Cal Posts: 3 Drives: 2010 370Z Sport Pkg Rep Power: 15	Thanks for the reply it is not so much the RPM level but the sound of the motor at start up it sounds like there is no oil in the top end and then after about 10 seconds it sounds great.

10-12-2010, 08:20 PM	#4 (permalink)
NewYorkJon34 A True Z Fanatic Join Date: Jun 2009 Location: Naples, Florida Posts: 3,041 Drives: 09 Fairlady Z Rep Power: 1065	Are you new to the world of sports cars or just the Z, cus it's pretty common with high performance vehicles.

10-12-2010, 09:52 PM	#6 (permalink)
TreeSemdyZee Premium Member Join Date: Dec 2009 Location: Kentuck-IANA Age: 60 Posts: 4,885 Drives: '09 370 & ‘14 Juke Rep Power: 27408	Dry engine. Once the oil and coolant gets fully distributed through the systems, the engine quiets.

10-13-2010, 09:16 AM	#9 (permalink)
J.B. Base Member Join Date: Oct 2010 Location: So Cal Posts: 3 Drives: 2010 370Z Sport Pkg Rep Power: 15	Thanks guys for the info Yes I am some what new to the sports car world in 06 I purchased a new Eclipse GT for my wife but needless to say it was no where near the car that this is. No offence to the Mits guys it was a good car but it is not apples to apples. I gotta say that this car makes me feel smart,all that you get for the price that you pay is outstanding. Thanks again for the help with this question and I look forward to talking with you guys soon.

10-13-2010, 01:36 PM	#10 (permalink)
NewYorkJon34 A True Z Fanatic Join Date: Jun 2009 Location: Naples, Florida Posts: 3,041 Drives: 09 Fairlady Z Rep Power: 1065	Ya buying a 370z is one of the smartest decisions you could make

10-13-2010, 01:44 PM	#11 (permalink)
Jeffblue A True Z Fanatic Join Date: Dec 2009 Location: NY Age: 36 Posts: 9,192 Drives: Z32TT & 335xi Coupe Rep Power: 37	think of it like turning on a computer. it has to boot up, and do its thing.

10-14-2010, 09:59 AM	#13 (permalink)
ROC1ROB Base Member Join Date: May 2010 Location: AZ Posts: 201 Drives: 09 MT BS Base/Sports Rep Power: 15	It's just all the marbles falling into place.

10-14-2010, 11:38 PM	#14 (permalink)
6SPD_FTW Base Member Join Date: May 2009 Location: Bristol, VA Posts: 59 Drives: 09 370Z Bl 6MT Rep Power: 16	I've noticed the VQ37VHR being very rough for the first 15 or 20 seconds on a cold start. It has NOTHING to do with how high it is idling. I'm pretty sure it has something to do with the VVEL. Nissan has probably programmed it to do something bizarre on cold starts for better emissions. The exhaust note is so rough sounding....and then it just slowly smooths out and sounds fine. It's also real bizarre that if you tap the gas (even slightly), the engine revs WAY up....and stays at like 3000rpm for a few seconds. Even when letting off the throttle, it still stays revved up there for a few seconds. Again, why I say that it has something to do with how the VVEL/timing advance is programmed to reduce hydrocarbon output from the tailpipe. Late, Trav