Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [transmission]

These are questions regarding transmissions in general (either manual, automatic or CVT transaxles and their component parts). This tag is not for questions specific to any type of transmission. Instead, use [manual-transmission], [automatic-transmission], or [cvt-transmission] INSTEAD. Use this tag if the question is relevant to multiple types of transmissions.

Transmission

enter image description here

778 questions
106
votes
17 answers

Does Downshifting (Engine Braking) Cause Extra Wear and Tear?

Does the act of downshifting to slow your vehicle down have any negative side affects? I don't downshift more than one or two gears at a time and I let out on the clutch slow enough that I don't rev very high. My red line is at 5.5 and mine are…
Gary
  • 1,213
  • 2
  • 8
  • 7
41
votes
6 answers

Why is a motorcycle's neutral between first and second gears?

The gear pattern is selected by clicking a lever with your left foot and is typically laid out as follows: 6th gear (if applicable) 5th gear 4th gear 3rd gear 2nd gear NEUTRAL 1st gear What is the technical reason engineers decided motorcycle…
kiss my armpit
  • 589
  • 2
  • 6
  • 11
36
votes
6 answers

Why doesn't anyone ever repair an automatic transmission?

I am old enough to have had about four transmission failures spaced over about 40 years and at no time did any mechanic ever offer to “fix” it; the only diagnosis has been a complete rebuild. This is not what happens to any other part of the car.…
glw
  • 462
  • 1
  • 4
  • 5
30
votes
1 answer

Why does the reverse gear in manual transmission cars sound different

When I got a manual transmission car (2003 Kia Rio) I noticed that it makes a winding sound in the reverse gear. Here is an example video that I found that demonstrates the sound. http://www.youtube.com/watch?v=mi2t_VT6YWg Why do manual transmission…
James T
  • 613
  • 1
  • 6
  • 7
22
votes
13 answers

Leaving car with automatic transmission in Neutral instead of Park

Can we use Neutral (N on the selector) instead of Park (P) when parking on a flat surface? Is this useful for transmission system? Because every time we put gear on P we must pass through R and will this reduce gearbox/clutch's life? What is the…
said h
  • 315
  • 1
  • 3
  • 11
22
votes
11 answers

Need I press clutch pedal while starting my car in neutral?

As I know, clutch pressing and neutral gear both disengage the engine from wheels. So will it matter if I do not press the clutch if I start in neutral?
Dwiparna Datta
  • 323
  • 1
  • 2
  • 7
20
votes
11 answers

Use of Neutral Gear in Automatic Transmission

I am new to driving A/T cars and I am trying to understand the use of Neutral(N) gear. Should I shift my gear from D to N when my car comes to a complete halt on a red light or somewhere else? As per my understanding, putting brakes on while waiting…
Piyush Kansal
  • 303
  • 1
  • 2
  • 6
18
votes
4 answers

Driving in second gear at 65+ mph

I accidentally drove my 2000 Grand Marquis on second gear on the highway. I was going 65 for like 5 minutes and tried to get it to 70mph but the car was shaking, when I realized I put it into regular drive while going 65 and it stopped shaking. Is…
qwertymk
  • 349
  • 1
  • 3
  • 9
16
votes
2 answers

Engine revs high 5th gear manual transmission

What might cause a car with a manual transmission that in 5th gear when given a punch of gas revs to very high rpms – with no power transferred to the wheels (i.e. the tachometer and speed go out of sync). For illustration (and I'm making these…
Brian M. Hunt
  • 357
  • 1
  • 3
  • 10
16
votes
4 answers

Is downshifting on hills harmful for non-trucks?

Possible Duplicate: Does Downshifting (Engine Braking) Cause Extra Wear and Tear? Since the days of taking drivers ed (many years back). I was told that when you encounter a steep or extended downgrade, to conserve your brakes and help increase…
theonlylos
  • 738
  • 3
  • 8
  • 18
15
votes
5 answers

Car shakes when in gear at red light

I bought a '96 Toyota Camry about a month ago. When I first turn the car on and the engine is cold, I can have the car stopped (in gear) and it will not shake. The idle RPMs will be at 1000. After the car has heated up, I notice the idle RPM drop by…
Jack
  • 253
  • 1
  • 2
  • 5
15
votes
5 answers

How difficult is it to rebuild a transmission?

I have a 1984 Toyota Supra that is now exclusively a track car. The last round out we let some less experienced drivers take the wheel and they basically destroyed the transmission. Nothing but 4th gear works now. We've been making the rounds at…
Mike Deck
  • 588
  • 1
  • 3
  • 9
15
votes
5 answers

Automatic transmission: Is shifting to neutral while approaching stops bad?

This is not with the intention of saving fuel (as I have seen many answers assuming savings in fuel while doing this). But I have this habit of putting the vehicle into neutral before approaching stops (red lights). The main reason behind doing this…
Rafi
  • 163
  • 1
  • 1
  • 5
15
votes
4 answers

Why do 5 and 6-speed transmissions typically need different gear ratios?

My 2013 Subaru WRX has a 5-speed manual, and I long for it to have a 6th gear when cruising on the highway. A friend has a 2012 Subaru STI with a 6-speed manual, and I noticed his car runs through the gears more quickly to achieve the same…
Trevor D
  • 1,193
  • 4
  • 12
  • 20
14
votes
9 answers

How to add a 7th gear to a car to enhance fuel economy?

Let's say there's a 6-Gear manual transmission car, whose 6th gear equals 2000 rpm at 100 km/h (~60 mph). How can one theoretically add a 7th gear that can maintain the same speed at 1400 rpm in order to enhance fuel economy?
neverMind9
  • 291
  • 1
  • 2
  • 9
1
2 3
…
51 52