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Should I put my automatic gearbox in "N" on traffic lights?

Old Sep 8, 2014 | 10:25 PM
  #1  
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Default Should I put my automatic gearbox in "N" on traffic lights?

I've been doing some research
The manufactures recommend different options. Leave it in D or Put it in N.

My owners manual seems not recommending anything at all.
so put it in R? :P

If I don't consider about gas consumption,
just want to prevent extra load or wear and tear,
whichever stresses my adorable baby,

What do you think the best?
FYI, my car is s40 2.4i '07

many Thanks
 
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Old Sep 9, 2014 | 09:13 PM
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Lightbulb

more stress comes from starting the engine "cold" and putting it in a gear. Putting it in neutral might save some wear and tear and fuel but not by much. Keeping it in gear might wear less but have a tad more fuel consumption. So in all this is a choice for you to decide, unless if you want to read of what I do?

I usually keeping in gear since it's only going to be a few minutes before the light changes to green. On another note if you want to save fuel and have a low amount of wear on the car; I recommend not punching it, keep to the speed limit, never be in the fast lane, use cruise control if traffic is good, use AC to keep you rage at bay or roll down the window on a nice cool day, put on some favorite tunes and be safe when driving.

When I be safe I keep distractions to a minimum. No Cell phone texts or calls and have water when thirsty. Not recommended to eat in the car.

I hope this help!
 
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Old Sep 9, 2014 | 09:27 PM
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1+ Great info.

I do bump mine in N if I think the light will keep me over a minute.
 
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Old Sep 9, 2014 | 10:17 PM
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I really don't think there is that big of a benefit either way.
 
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Old Sep 23, 2014 | 08:37 AM
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Out of habit I usually move the selector to neutral when approaching a red light, not 100% of the time, to me it saves on brakes as your are not fighting the tranny, I downshift with my manual Nissan truck and at the stop I hold the clutch in. Sort of both the same but I will not downshift with the Volvo trans.

poikaa
 
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Old Sep 23, 2014 | 08:49 AM
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My mothers new Ford does it automatically. When the car is not moving, and my foot is on the brake, I can feel that it shifts into some sort of neutral. When I take my foot off of the brake, it goes into first and then moves forward.
 
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Old Sep 24, 2014 | 02:34 AM
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Default So, what's our choice?

If it wouldn't be in harms way anyhow, I'd like to put it in N since in this way I feel less vibration, so more comfortable.

What I'm afraid is, I think there should be clutch-like compartments in the auto gearbox, so I could wear it off.

What do you think?
 
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Old Sep 25, 2014 | 05:25 AM
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Default Busy Box

Neutral is just about the same as park but there is no pawl or park lock on the output shaft to be engaged.
The gear selector detents the valve spool to allow the hydraulic fluid under pressure to flow to activate the clutch packs or bands that apply the planetary gears in order to shift.
In neutral or park there is no flow to the clutches or bands so there would be no ware or slippage. I do not think this would involve the lock-up torque converter if present.
Now the Asin-AW transaxle used in the Volvos is an electronically controlled trans-axle that uses an TCM (Transmission Control Module) to operate solenoids for shifting also locking up the torque converter. The TCM will also place the transaxle in neutral when stopped in drive with the brakes applied.
It is also possible the trans-axle down-shifts as you come to a stop. Mine seems not to do this. May have something to do with throttle position sensor. I think the tranny may be smarter than me!

poikaa
 
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Old Sep 29, 2014 | 02:04 AM
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Originally Posted by poikaa
Now the Asin-AW transaxle used in the Volvos is an electronically controlled trans-axle that uses an TCM (Transmission Control Module) to operate solenoids for shifting also locking up the torque converter. The TCM will also place the transaxle in neutral when stopped in drive with the brakes applied.
Hey, poikaa, thank you for your contribution
So, the trans put it in Neutral automatically? that's why there's no diffrence of idle RPMs either N or D. Question solved.

But when it's still in D though, I feel more vibration of the car than I put it in N. Why does it happen?
 

Last edited by good1662; Sep 29, 2014 at 02:07 AM.
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Old Sep 29, 2014 | 06:48 AM
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Default Vibration in drive at a stop light

What I wrote is a sumnation of what I researched on our Asin AW transaxels. How much applies is to what series or production date of the transaxels.
I have tried this again recently at a stop light and it seems to 'pull' when in drive at the stop. I guess mine does not go into neutral by itself!

poikaa
 
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