Neutral down hills?
Originally Posted by lifted97ranger
and what if you go too far and you put it in reverse? now talk about bad for the tranny.....
Originally Posted by graygooseranger
As stated, leave it in gear, I have a stick and I leave it in gear myself, if you take it out you are asking for trouble......
it actually states in the manual to not tow a vehical in neutral with the drive wheels down. i think this has something to do with the fact that the oil pump inside the tranny no longer moves the oil thru it and then u fry ur tranny.
Originally Posted by FMD
it actually states in the manual to not tow a vehical in neutral with the drive wheels down.
I have a question that is similar. I am an automatic. If i go up a steep hill and cannot make it, and my truck rolls backwards whille still in drive. Is that bad? what should i do in that instance that i cant coem to a stop on the hill to go in reverse.
Originally Posted by SouthernMudSlinger
So it is ok to coast in neutral?
As for coasting down hills, I know of no state that it's legal to do so. I read that from the Drivers Handbook when you study for the permit test. It's even in the CDL books.
Originally Posted by Ranger00
I have a question that is similar. I am an automatic. If i go up a steep hill and cannot make it, and my truck rolls backwards whille still in drive. Is that bad? what should i do in that instance that i cant coem to a stop on the hill to go in reverse.
FYI for anyone worried about accidentally shifting an electronic automatic into reverse while driving forward:
Even if you select reverse with the shift lever, the PCM will not command it except at very low vehicle speeds. This is to protect the transmission (and occupants) from driver error.
Nonetheless, I still say that there is no benefit in shifting to neutral going downhill and several good reasons to avoid it.
Even if you select reverse with the shift lever, the PCM will not command it except at very low vehicle speeds. This is to protect the transmission (and occupants) from driver error.
Nonetheless, I still say that there is no benefit in shifting to neutral going downhill and several good reasons to avoid it.
I not only leave it in gear i usualy downshift so i basicaly never use the breaks. I try for the lowest rpm that i don't need more then a very gently tap of the breaks. I only coast up to red lights
In an auto i take it out of OD and go to D and if its a serious hill like 2 lane and twisty i might even go to second or even first.
gas mileage seems slightly less important than your breaks working properly. I found that the best things for gas are keep rpms under 2,500, never accelerate up a hill if you want to accelerate wait till down hill, CRUISE CONTROL.
In an auto i take it out of OD and go to D and if its a serious hill like 2 lane and twisty i might even go to second or even first.
gas mileage seems slightly less important than your breaks working properly. I found that the best things for gas are keep rpms under 2,500, never accelerate up a hill if you want to accelerate wait till down hill, CRUISE CONTROL.
I've shifted to neutral many times and back again into Drive on hills and other terrain with my A4OD transmission. It doesn't hurt it by any means. The torque converter is built to stall out at certain RPM's. It can also withstand a sudden jump in RPM's, like if you were to come off the ground, or shift out of neutral while decelerating.
Also, the gear shift lever has a certain design to it to prevent accidental shifting to neutral. If you push forward on the gear shifter (towards the dash) while moving it up and down between Neutral and 1st gear, it will shift. If you're in Drive, it won't shift UP into Reverse without PULLING the shift lever towards you. If you understand how it works, you can use it most effectively.
Also, the gear shift lever has a certain design to it to prevent accidental shifting to neutral. If you push forward on the gear shifter (towards the dash) while moving it up and down between Neutral and 1st gear, it will shift. If you're in Drive, it won't shift UP into Reverse without PULLING the shift lever towards you. If you understand how it works, you can use it most effectively.
When you're in an automatic coasting down hill, the RPM is so low you're probably getting like 60 miles to the gallon...pop it in neutral and you're probably getting 65.
I have a manual and never go into neutral to go down hills...I just leave it in a proper gear and take advantage of engine braking to help save my brake pads. I figure it can't be using much fuel because it has no choice, the engine has to be turning because there is no torque converter to let it slip.
I have a manual and never go into neutral to go down hills...I just leave it in a proper gear and take advantage of engine braking to help save my brake pads. I figure it can't be using much fuel because it has no choice, the engine has to be turning because there is no torque converter to let it slip.
32-24-2.
Coasting downhill in neutral or with clutch out as misdemeanor. The driver of any motor vehicle when traveling upon a downgrade shall not coast with the gears or transmission of such vehicle in neutral. The driver of a truck or bus when traveling upon a downgrade shall not coast with the clutch disengaged. A violation of this section is a Class 2 misdemeanor.
Coasting downhill in neutral or with clutch out as misdemeanor. The driver of any motor vehicle when traveling upon a downgrade shall not coast with the gears or transmission of such vehicle in neutral. The driver of a truck or bus when traveling upon a downgrade shall not coast with the clutch disengaged. A violation of this section is a Class 2 misdemeanor.
Originally Posted by deapee
When you're in an automatic coasting down hill, the RPM is so low you're probably getting like 60 miles to the gallon...pop it in neutral and you're probably getting 65.
Originally Posted by FireRanger
Have you read any of this thread? When you are coasting down hill, you are getting infinate MPG because you aren't using any gas at all. The injectors shut off.
I have a Scanguage. It never has maxed out the MPG figure, it's capable of above 100. The most I've seen it go is 70 when I had the ranger. That only happened if i pushed in the clutch to allow the RPM's to drop. Usually was around 50 MPG, and went down as vehicle speed slowed. In my F150 now it'll go to 35 when coasting to a stop.
With this it appears the injectos do not shut down, but inject enough fuel to make sure the engine keeps running. That's my theory anyhow.
With this it appears the injectos do not shut down, but inject enough fuel to make sure the engine keeps running. That's my theory anyhow.
Originally Posted by jorlee
With this it appears the injectos do not shut down, but inject enough fuel to make sure the engine keeps running. That's my theory anyhow.
The injectors become active again when the RPMs fall low enough to risk stalling or when the throttle is moved from the closed position or when the clutch pedal is depressed in manual trucks.
Originally Posted by rwenzing
No, they shut off completely on decel after a short time delay. Zero fuel is needed to keep the engine turning when it's in gear being pushed by the vehicle.
The injectors become active again when the RPMs fall low enough to risk stalling or when the throttle is moved from the closed position or when the clutch pedal is depressed in manual trucks.
The injectors become active again when the RPMs fall low enough to risk stalling or when the throttle is moved from the closed position or when the clutch pedal is depressed in manual trucks.
Thats pretty interesting, I didn't realize that's how it works. Makes sense.
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