Questions regarding automatic gearboxes, and associated parts such as torque converters

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6
votes
3answers
782 views

How Does a Quick Shifter work in a motorcycle

I have often seen motorcycles like the BMW S100RR and the famous Ducati Panigale with Quick Shifter technology which allows seamless gear changes. I want to know how these things work mechanically ...
3
votes
0answers
20 views

converting tramsmission

my car has in a Toyota 4e engine which uses a corolla 3 speed transmission. The transmission is faulty so i would like to change it to a 4 speed transmission toyota starlet transmission, same (engine)...
1
vote
0answers
12 views

1999 Toyota Camry Transmission issue

I have a 1999 Toyota Camry. Bought it from dealership a year and 3 months ago. I went from 150,000 to 170,000 miles on the Odometer. Overtime the car started to shift rough (automatic vehicle). I ...
22
votes
9answers
146k views

What's the point of the D3 gear in an automatic transmission?

My Honda Civic has a D gear and a D3, which apparently prevents it from going into 4th. Why would I want to do this? What is it good for? Does it make my fuel efficiency better or worse? Does it ...
3
votes
1answer
2k views

Flat Tow Subaru Auto Trans with Engine Running?

A year ago I traded my 2012 Ford Focus for a 2014 Subaru Outback 2.5i Premium (automatic transmission). Dealer told me it could be flat towed, made sense to me, why not so long as it is in neutral? ...
0
votes
0answers
22 views

honda fit aria (2007) gear engage vibration and sound

A sharp sound and a vibration come when releasing break paddle after the gear is engaged in reverse (R) or in drive (D). When the car is in motion, they get disappeared. what could be the reason?
6
votes
1answer
61 views

Transmission disengages itself

Seems like my car disengage itself from drive to neutral while in motion. I drive a 2004 Honda Accord. When in drive and in motion, the car starts slowing down even with my foot on accelerator. It ...
26
votes
6answers
13k views

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 ...
4
votes
2answers
32 views

93 Dodge Dakota ATF cooler line

I had to replace the transmission in my 93 Dakota. To get it to drop I had to cut the metal coolant lines that lead to/from the radiator. The stock lines are .315 ID. My question is, can I use a ...
10
votes
2answers
1k views

How exactly does Sport Mode work in an automatic Subaru Outback?

I have 2008 Subaru Outback (160K miles) with an automatic transmission and have been curious about the Sport Mode that can be shifted into. I read in the car's manual that it increases pickup and is ...
8
votes
2answers
13k views

Push start a car with automatic transmission

Is it possible to push start a car with automatic transmission? Use case: Let's say the battery is dead or you have a bad starter. I know this can be done on manual cars by putting the car in to gear ...
3
votes
0answers
37 views

Don't know if its my transmission, or gears

I have a 2009 Chevrolet Impala LT. When I drive in D it won't go past a certain speed but when I drive in 3 it sounds faster than what it's going. It will be at 60mph and the reader will say at 6 when ...
5
votes
4answers
402 views

Automatic car won't start, steering wheel won't turn, key just makes car click etc - but radio works?

Someone else was in the driver seat and they were trying to drive. At one point I took out the key and when he put it back in the car wouldn't start. This was yesterday and it still won't start. The ...
7
votes
6answers
46k views

Strong vibrations when idling even after replacing engine mounts (automatic transmission)

I have a '93 Acura Integra with automatic transmission. Ever since I got it some time ago the car has been vibrating a lot when stopped at a light, for example. The vibration is worse when in gear ...
2
votes
6answers
601 views

Proper way to stop auto transmission car

I'm just having my first auto transmission car, with press to start button. How I start the car Press the brake pedal Press the "press to start" button to turn on engine Move gear from "P" to "R" (...
9
votes
1answer
143 views

2005 Mazda 3 at warning light at cold start ups

I've noticed recently that my mazda 3 on cold starts would show the at warning light. When I start it, it normally flashes it for a few seconds then disappears. Then when I pull it out of the garage, ...
10
votes
5answers
35k views

Can coasting in neutral damage an automatic transmission?

When I drove a manual transmission, I got in the habit of shifting to neutral on long, shallow grades to save fuel. Now I'm driving an automatic (specifically, a recent Corolla) and still doing it. ...
2
votes
3answers
725 views

2001 Honda Civic LX won't stay in 4th gear

I have a 2001 Honda Civic LX, automatic transmission. There are 3 gear settings: 2, D3, and D. If I'm driving in D3 and shift into D, I can feel it shift gears up (from 3 to 4), but then it ...
2
votes
2answers
818 views

2001 civic won't accelerate when pressing gas petal..?

For the past few days my check engine light has been on. Whenever I try to accelerate, the car will not go very fast at all, no matter how hard I press it, all the way down, halfway, doesn't matter. ...
2
votes
1answer
28 views

Wrong oil in trans

I have a 2013 Silverado 2500 with 150000 miles, about 5 miles after an oil change I noticed two hard shifts. The next day I drove 1/2 mile, the trans slipped and is now disabled. I had mechanic ...
1
vote
0answers
65 views

Auto transmission just stopped working while I was driving

While I was driving, my cars automatic transmission suddenly would not work in drive or reverse but the motor was still running. Does someone know what the problem could be?
4
votes
5answers
4k views

Does switching to neutral on an automatic transmission improve braking for immediate stopping?

I've been told that when needing to brake quickly, throwing the gear into neutral on an automatic transmission actually allows for better/quicker braking. I understand how things work pretty well but ...
8
votes
2answers
382 views

Does engine braking an automatic wear out the transmission?

My question is a variation on these two: Engine braking with an automatic transmission What are the “1” and “2” or “L” gears used for on an automatic? I recently bought an automatic transmission ...
8
votes
4answers
2k views

What are the “1” and “2” or “L” gears used for on an automatic?

In a car with an automatic transmission, we are normally greeted by the acronym PRNDL, or in some cases (older cars) PRND21. I know that the L, 1, or 2 will cause the transmission to stay in a (L)...
4
votes
2answers
4k views

Do I need computer reprogramming when transmission is replaced?

Honda Odyssey 2003: I'm replacing a transmission, and a local mechanic will help me to swap it in my garage. I've been told at a local shop, that in order to install remanufactured transmission ...
6
votes
1answer
39 views

1998 lincoln continental with fluctuating idle when put in gear only (drive/reverse)

I have a 1998 Lincoln Continental. It has 124k miles on it. The history of the transmission maintenance are as follows: Fluid and filter was changed at 29k miles Fluid was flushed at 86k miles Fluid ...
4
votes
1answer
63 views

Does it save wear on AWD drivetrain to shift to Neutral before going into Park or Reverse?

I have an old Subaru with All Wheel Drive. I can feel in some circumstances the larger and more complex drivetrain "winding and unwinding" all those differentials and CV joints. It feels unpleasant, ...
6
votes
2answers
2k views

How hot is “HOT” on a transmission fluid (ATF) dip stick?

I want to add some fluid additive (Lucas) to my transmission, but I don't want to overfill it. The dipstick has add, warm, and hot for measuring. So how hot is the hot level? My temperature gauge ...
8
votes
0answers
102 views

Severe Noise Under Acceleration from a Stop or Slow Speed

EDIT March 9, 2016 So I took the car to a guy who specializes in ATX gears, and he felt that it's not a tranny problem. Got a second opinion from a Chevy tech who concurred. So due to that and the ...
2
votes
3answers
17k views

Automatic Transmission - Shifting from Neutral to Drive while in motion

Recently, I've developed the habit of using the neutral gear in my automatic Honda Fit when going down slight inclines where I would otherwise have to use the accelerator to maintain speed. I ...
11
votes
4answers
2k views

Does putting an automatic car into neutral at stop lights significantly harm the transmission?

I drive a 2013 Mazda 3, in case that makes any difference to the answer. There seems to be a few discussions on the web which indicate that putting an automatic car into neutral does not ...
6
votes
3answers
207 views

Optimal acceleration for automatic transmission? [closed]

In a car with automatic transmission, what's the best way to accelerate so as to minimize fuel consumption? Assume I'm not going to change the gears manually. Note that I'm also considering non-flat ...
3
votes
0answers
45 views

2010 mini cooper transmission noise and gear shift at RPM higher than normal

I'm hearing rattling noise when the transmission is engaged (drive) and it get's louder at higher rpm. previously I did not hear this. There is no noise when I rev engine in park mode. The gear in ...
7
votes
2answers
167 views

Do Manual transmission cars perform better than Automatic transmission?

I'm stuck between choosing a car available in both automatic transmission (CVT) and Manual transmission (6 speed). I wanted to know which one will perform better in the following aspects (considering ...
7
votes
4answers
33k views

Can I use a Dexron III automatic transmission/power steering fluid where a Dexron II is required ?

more generally speaking are 'higher Dexron numbers' also fulfilling the specifications of the lower number fluids ?
7
votes
1answer
95 views

Why am I not moving after starting car and shifting to Drive?

So I have had this issue for the last couple months where when I first start the car, shifting to Drive (automatic transmission) doesn't do anything. Pressing the gas only revs the engine, as if in ...
3
votes
2answers
65 views

Automatic transmission sticking after car has not been driven for 3 months

My car has not been driven for a while and it is having trouble and sticking when shifting gears. Should I continue to drive it and will this problem fix itself or is there something I can buy like an ...
7
votes
1answer
73 views

What could cause high RPMs but no power?

I have a 2006 ford fusion and lately it works fine if I lightly press on the gas. If I press on the gas with full force though it will rev up the RPM's but there will be no power and my car won't ...
3
votes
0answers
21 views

Transmission slip

I have a 2011 Chevy Impala. Once in a while the engine will rev and then kick into first gear. If I slowly press down onto gas petal it will not do this. If I start slow no problems, but if I put foot ...
6
votes
2answers
52 views

Will a Slight Overfill Harm an Automatic Transmission

I flushed my transmission recently, and I overfilled it slightly, maybe by a 1/2 liter on a transmission that takes about 8 liters. When cold, the fluid is a little over the cold mark, but not up to ...
7
votes
1answer
53 views

How Does Being in Drive Disable the Starter on an ATX Vehicle?

Being used to driving manual transmissions, I occasionally forget to put my ATX in park when I shut off the vehicle ( I'm getting better ). Today I did that without realizing it, and when I went to ...
3
votes
2answers
273 views

Is my automatic transmission broken?

I just broke down. Here's a description: ('97 Subaru Legacy) Driving completely normally along a town road, the car suddenly began to sputter and jump as I pressed on the gas. Then the check engine ...
1
vote
1answer
39 views

Automatic Transmition shifting gear not changing to anything other than D

When I attempted to park my Mitsubishi Montero 2002, switching the gear stick from D to P did not disengage the transmission. After running from P to D slowly a couple of times, the car did ...
2
votes
5answers
9k views

Can't move Chrysler 300M gear selector out of park

I got into my car this morning and couldn't move it from park after I started it. I can't change the gear at all. I can move the wheel, though. I've tried to wiggle it but haven't forced it because I ...
4
votes
1answer
90 views

1996 Mustang GT won't start with shifter in Park, but will start in Neutral

I just had this weird problem today. The engine will turn fine, but won't start with shifter in Park. Once started in Neutral the motor runs fine with no hesitations. Battery is strong. Any ideas?
2
votes
1answer
56 views

2007 BMW X3 3.0Si wont start

I made the mistake of buying a BMW when moving to the Caribbean. It ran very well and has had a quarterly service every year. (We basically live on a permanent hill, very steep up and down) Last week ...
3
votes
0answers
38 views

Volvo AW55 W mode hard shift avoidance

I have recently purchased a 2006 Volvo S60 T5 with 136,xxx miles. Like many mid-2000s Volvo's with the AW-55 transmission, it has succumbed to shift flares at 1-2 and 2-3. It is light but I would like ...
3
votes
0answers
37 views

2008 Honda Accord Automatic Transmission - Transmission seems to be slipping. Is it serious?

I have a 2008 Honda Accord with an automatic transmission. I don't know much about cars. The car seems to be having problems switching gears, especially in low gear. For example, often when I'm ...
34
votes
3answers
34k views

Is there a way to put Prius with dead battery into neutral?

I own a 2010 Prius. It has a dead battery, front facing forward in my garage. I do not have long enough jumper cables. I’ve searched the Internet. Did Toyota really create a car that cannot be put ...
4
votes
1answer
148 views

The purpose of Smart Junction Box in a car

I am doing research about the smart junction box of a car but on the Internet there is nothing that shows its functionality. I am looking to do some research about it and try to improve its ...