8 week old Nismo 370Z over-revving

Trips · 11-19-2015, 03:58 PM

I can't tell if we're serious here or not

Nonetheless

Yes, it is perfectly normally for the rpms to hang their till the engine warms up.

The amount of waiting will depend on the weather.

POS VETT · 11-19-2015, 03:58 PM

What is it about this forum?

1500 rpm is "over-revving"? Really? Try again when you tried to downshift into 5th and got 1st instead ...

BGTV8 · 11-19-2015, 04:04 PM

Quote:

Originally Posted by Gratters

As the title says have got my beautiful 370Z Nismo only 8 weeks ago brand new and well pleased with it but over the last couple of weeks when I start it up from cold (doesn't happen from warm) - it shoots up to 1500rpm and sticks there for about a minute before gradually falling to the 600rpm it should be.

Not a major problem apart from the fact if I drive off immediately then I don't need the accelerator as the car simply pulls me along until the revs drop down - I can drive half a mile without touching the throttle ! Its like driving a frisky horse that just wants to bolt !

The only way round it seems to be to accelerate PAST the 1500rpm and then brake - it then seems to behave normally.

Any ideas ? I know I'm going to have to take it in which is a ball ache as I'm pushed for time and on an 8 week old £40k car !

Cheers

The ambient temps in your neck of the woods has dropped noticeably in the past few weeks - right ?

That is the only thing to change and it is entirely normal.

Either wait for 30 seconds or ride the brake for the first 30 seconds.

If you are really aggrieved, don't blame Nissan but the numpties who force cold start/slow idle-down to avoid excessive emissions on cold-start.

gbrettin · 11-19-2015, 04:45 PM

At a cold start up your car will automatically give a little more gas and will slowly idle down. That is completely normal.

BTW, cars don't like to be beat at a cold start. That goes for any make/model. On hot days you can get away with driving easy at low rpm until you are up to running temp. On cold days, give your car a couple minutes to warm up a little and then ease into it until your are at running temp.

A remote start helps the process.

KngScottieV · 11-19-2015, 05:32 PM

The main reason cars do this is to heat up the catalytic converters so they start operating efficiently faster. It's an emissions thing as others have said.

Rusty · 11-19-2015, 08:28 PM

Quote:

Originally Posted by FPenvy

.......again.

Think your butt plug needs to be pushed in a little farther.

edo-san · 11-19-2015, 08:38 PM

Okay Z team, leave him alone. He just didn't know. I just found out that my shift lever has to be in first gear in order to rev my engine above 5k...Who figured that one out?

11-19-2015, 03:58 PM	#16 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,730 Drives: 🔰 Rep Power: 10	I can't tell if we're serious here or not Nonetheless Yes, it is perfectly normally for the rpms to hang their till the engine warms up. The amount of waiting will depend on the weather. TerribleONE, Streetlife, gbrettin and 1 others like this. __________________ Last edited by Trips; 11-19-2015 at 04:01 PM.

11-19-2015, 03:58 PM	#17 (permalink)
POS VETT Track Member Join Date: Apr 2015 Location: Columbus OH Posts: 612 Drives: Z34\|C4LT4\|C6Z06\|V25 Rep Power: 3366	What is it about this forum? 1500 rpm is "over-revving"? Really? Try again when you tried to downshift into 5th and got 1st instead ... Zipper 104 and Memphis370Z like this.

11-19-2015, 05:32 PM	#20 (permalink)
KngScottieV Base Member Join Date: Dec 2012 Location: Utah Age: 40 Posts: 155 Drives: 13 370z MagmaRed M6S Rep Power: 22	The main reason cars do this is to heat up the catalytic converters so they start operating efficiently faster. It's an emissions thing as others have said. __________________ 2013 Nissan 370z Magma Red Base w/Sport package 6speed. AAM intakes (S-line for now, still needs tuned), Berk HFC's, ARK DT-S cat-back, CJM baffled oil pan, and FI 34 row oil cooler.

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11-19-2015, 04:45 PM	#19 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,281 Drives: Tricycle Rep Power: 589151	At a cold start up your car will automatically give a little more gas and will slowly idle down. That is completely normal. BTW, cars don't like to be beat at a cold start. That goes for any make/model. On hot days you can get away with driving easy at low rpm until you are up to running temp. On cold days, give your car a couple minutes to warm up a little and then ease into it until your are at running temp. A remote start helps the process.

11-19-2015, 08:38 PM	#22 (permalink)
edo-san Base Member Join Date: Sep 2015 Location: Lathrop CA Posts: 28 Drives: 2014 370Z Rep Power: 10	Okay Z team, leave him alone. He just didn't know. I just found out that my shift lever has to be in first gear in order to rev my engine above 5k...Who figured that one out?