Can you put auto to N while driving?
#1
Can you put auto to N while driving?
I heard from people saying that put your Auto to N while driving will harm your transmission. However, my dad did that all the time but there is no problem yet (the car has been driving for 5 years). I put the gear to N at stops but don't know if it is OK to do it while going downhill.
Any technical explanation? :-)
Any technical explanation? :-)
#2
#3
#4
auto tranny's are tricky the fact that its all computerized gives it more room for error the thing is doing nething that you really shouldnt be doing like constantly shifting it whether your using hte manual shift mode or juss goin to neutral will damage it it just wont show up until way later on....after warrenty expires of course
#6
While I used to do this in a couple of spots it was part of a game to see how far I could coast from a set speed at a specific location, a game several of us at work would play. Probably not a good idea on the older cars which sometimes would die when you did this and then you may have some interesting events with power brakes and power steering disappearing.
The biggest issue I see is not putting it in neutral but putting it back in gear, is that good for the power train?
#7
the auto will put it self back in the correct gear for your speed. (if your moving when you do this)
the chip won't let you N drop it. (i tried on a loaner)
putting it into N and back in drive won't hurt any thing or save you a noticeable amount of gas.
the only real time u can hurt it is if you rev it up, then put it in gear while the revs are still up. the chip won't engage the clutch packs till the revs fall down a bit, but it will still engage around 2500 or so, which does cause a stress.
the chip won't let you N drop it. (i tried on a loaner)
putting it into N and back in drive won't hurt any thing or save you a noticeable amount of gas.
the only real time u can hurt it is if you rev it up, then put it in gear while the revs are still up. the chip won't engage the clutch packs till the revs fall down a bit, but it will still engage around 2500 or so, which does cause a stress.
Trending Topics
#9
#10
#11
Putting the car to N won't do anything, you're still burning gas to keep it at idle the same as if it was in D. Do not put it to N if you are coasting to a stop either, downshifting manually will actually save gas if you keep the revs up high. Once the revs drop below a certain point when coasting to a stop the car starts to take over the wheels and will start putting fuel back into the engine. If you down shift and keep the revs up the computer lets the wheels do the work and you don't burn any fuel. I watch my A/F gauge constantly and whenever I downshift to a stop there is no fuel going through the motor. When you put it to N or keep it in D it will burn fuel.
#12
Putting the car to N won't do anything, you're still burning gas to keep it at idle the same as if it was in D. Do not put it to N if you are coasting to a stop either, downshifting manually will actually save gas if you keep the revs up high. Once the revs drop below a certain point when coasting to a stop the car starts to take over the wheels and will start putting fuel back into the engine. If you down shift and keep the revs up the computer lets the wheels do the work and you don't burn any fuel. I watch my A/F gauge constantly and whenever I downshift to a stop there is no fuel going through the motor. When you put it to N or keep it in D it will burn fuel.
#13
Incorrect. Virtually all modern cars will not burn fuel when coasting down from a high speed. The motor will be driven by the wheels. At a certain point in the RPM range the car will start putting fuel back in, but coming off from say 70mph if you are coasting it will not use any fuel.
#14
auto tranny's are tricky the fact that its all computerized gives it more room for error the thing is doing nething that you really shouldnt be doing like constantly shifting it whether your using hte manual shift mode or juss goin to neutral will damage it it just wont show up until way later on....after warrenty expires of course
Just wrong. Automatic Transmissions have been around since far before computers. Fluid controls everything in your transmission. It's basically a series of hydraulic lines and pumps that control a set of planetary gears.
Don't just make stuff up you don't know about.http://auto.howstuffworks.com/automa...ansmission.htm
#15
Incorrect. Virtually all modern cars will not burn fuel when coasting down from a high speed. The motor will be driven by the wheels. At a certain point in the RPM range the car will start putting fuel back in, but coming off from say 70mph if you are coasting it will not use any fuel.
This is a direct quote from an Infiniti tech that I got when setting up an OBD tool for taking onboard readings:
----------------------------------
No the engine is still running the injector pulse is still live. Nissans do not use technology like the Chrysler MDS. We achieve our fuel efficiency with valve overlap, varying intake lift and duration. Timing and fuel injector pulse are controlled and almost cut at some points but they are never off.
S
On Sat, Jun 27, 2009 at 2:10 PM, pfarmer@xxxxx.com> wrote:
S,
Quick question, does the Infiniti shut off the fuel injectors when coasting?
-----------------------------------
Since I know this guy as a very knowledgeable tech right to the module design area I trust what he is saying until proven otherwise.
While the engine is possibly driven by the wheels (otherwise maybe not self substaining) I trust that some fuel is still being burned.