When the transmission is in 'DRIVE', the tires tend to skid a lot, using '1' and '2' gears, the transmission acts as if you use the 1st gear on a manual transmission, giving you more traction and less skidding; same thing in muddy roads. You also use the lower gears when towing. If you put it in 1, you can floor it until it almost redlines, then bump into 2, and wait till it revs way up there, then knock it into the next gear. I would not recommend doing this unless you want to cause costly damage to your transmission.
Shifting auto transmissions is not a good thing, either you hold one gear, shift only up gears, or just keep it in drive. On most and newer transmissions they upshift all gears when brought to a higher rpm, the computer overrides shift function so the engine wont blow up, regardless whether the shifter is in first gear it will still shift!
In the winter and other slick conditions you want to stay in drive, and when you come to a stop, shift your vehicle into Neutral as this keeps the wheels from pushing you through the intersection. When should you use them? Well, when you're at a stop light or before you accelerate, first turn OD off if your's is 4spd. If 3spd, first, you flick the gear selector if yours is floor mounted to "1". After you max them, move the selector to 2.
Then move it up to "D", or 3rd gear. After that, you can go to 4th gear if you have a 4spd by turning on OD or shifting selector to OD selection. The 3, 2, and 1 positions can be used to stop a car if the brakes have failed. Shift progressively from D to 3, then 2 under 40 mph , and then 1 under 25 mph. Then steer uphill and out of traffic, and shift to P the instant the car actually stops.
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To go down hill By setting L or 1 or 2 , the gear will stay low and you will be able to use engine brake, instead of using brakes all the way down the hill and suffering from fading. Improve this answer. TRiG 4 4 bronze badges. Gabriel Diego Gabriel Diego 1, 5 5 gold badges 13 13 silver badges 31 31 bronze badges.
Great point, totally forgot I do that too! Some transmissions when you choose 2, it will start out in 2 from a stop, which is nice for icy conditions. A note on overusing engine braking over using the brakes which I do : new brake pads are cheaper than new transmissions. Separatrix: The wear on clutch and transmission during engine braking is not higher than during normal driving.
Unless you're doing it completely wrong, of course, letting the clutch slide or somesuch. And even if the wear would be marginally I have found that my Dodge Caravan will downshift when going downhill and the cruise control is set to try to control the speed although it can't keep it exact.
Show 3 more comments. Two additional uses alongside engine braking controlling downhill descents: Low gear, high revs uphill on loose ground like sand If you need to go up a steep hill on loose terrain like a sandy dirty track, dune or fine gravel, you need to build up momentum before hitting the incline and you need to put your foot down and get high revs for the speed you're travelling at.
From Land Rover's off road driving guide : Deep mud or sand needs a steady momentum to carry you through Higher gear, low revs on ice and mud Too much power when driving in icy conditions or wet mud will simply cause the wheels to slip, so you might want to put the gear in to 2nd and then drive with low revs.
From Land Rover again: In mud, too low a gear causes wheel spin. More from the BBC Stay in a higher gear for better control, and if it is slippery, in a manual car move off in a higher gear, rather than just using first. MooseLucifer MooseLucifer 6, 4 4 gold badges 23 23 silver badges 55 55 bronze badges. That an unusual usage for the L.
Most of the time I would simply apply gas to downshift when going uphill. Many newer auto transmissions will keep a lower gear under constant load, but of course, the machine may fail sometimes. If I left it in D, I'd floor it and the car would shift into 3rd, get up to speed, then I'd have to back off the throttle and it would shift back into 4th, where it didn't have the torque to maintain the speed, so I'd floor it, it would shift into 3rd to get back up to speed, then I'd back off the throttle and it would shift into 4th, so I'd floor it That's what I meant.
Many modern cars not all are able to keep the gear if the load is constant, but it looks it was not your case. I always drove under powered cars and never felt I need to more power. Even a car with an 1. I even got a number of speeding tickets in such a car. Of course that a stick shift is way better to control such tiny power.
And also it is not the case if you can afford the tickets or drive in the racetracks :-P — Gabriel Diego. Show 1 more comment. I'm a little confused by this. I've only driven automatics after passing my test, and only the Renault Clio II had this feature - but it was via a dedicated "snow" button which started you off in 2nd.
In the case of some automatic transmissions, the gear will shift out of gear 1 after you reach a specific speed like 30 mph. This is to prevent further damage to the transmission or engine or even cut power to the engine.
On the other hand, if you select the second gear, the transmission will start in 2nd gear and stay locked there. This is helpful when you drive on slippery surfaces or for initiating engine braking while you are driving downwards on a steep hill. These two gears will prevent the automatic transmission from shifting to any higher gear and also prevent the engine from starting.
What happens internally is that when the transmission lever is placed at low gears, the amount of fuel injected into the engine gets restricted. This, in turn, helps in boosting the torque and decreasing the engine speeds. Basically, putting your vehicle in a low gear means that its speed is lower as compared to the speed of the engine.
Modern cars come with automatic transmissions and it really takes the burden off your shoulders by shifting gears automatically.
However, in the situations listed below, shifting to gear 1 or 2 manually can help you a lot:. Manually shifting the vehicle to low gear delivers more power to help you drive on hilly terrain. This is more beneficial when you need to descend a hill as it helps to slow down the vehicle and maintains a slow and steady speed. As a result, this reduces the amount of braking you would have had to do.
This is very helpful because riding the brakes while climbing down a steep surface can overheat the brakes which can lead to brake failure. Since the low gears like 1 and 2 provide higher engine power, it becomes ideal for towing another car, boat, or trailer.
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