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

learn more… | top users | synonyms

2
votes
7answers
14k views

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 ...
4
votes
1answer
504 views

2004 Chevy Malibu jerks when deceleration is followed by acceleration between 25-40 mph

I recently noticed that when coasting or breaking is followed by acceleration (seems to be only when the car is moving between 25 and 40 mph) that there is a slight jerk. After recreating the problem ...
1
vote
2answers
104 views

2007 Nissan Frontier Transmission, Differential & Transfer Case service intervals for light driving?

According to the owner's manual service/maintenance guide, automatic transmission fluid, differential oil & transfer case oil should be inspected for leaks at the following intervals: ...
1
vote
2answers
22 views

Towing a trailer with a 2006 Honda Civic VXi 1.8 Auto

I will be using a trailer for my Dec. holiday. I have a 2006 Honda Civic VXi 1.8 Auto. What I need questions on: 1) Do drive in the normal D or D3? 2) Pulling a trailer with an automatic, how does ...
3
votes
3answers
59 views

What disadvantages a car with 4-speed transmission have compared to 5, 6 or 7 speed with similar engine?

This seemed to be most relevant site to ask my question. I am planning to purchase a new car and my shortlisted car has 4 speed automatic and 1.6 litre engine. The thing that worries me is that it ...
1
vote
2answers
17 views

2010 VW Stuck in Park

I have a 2010 VW Jetta Stuck in Park. When I turn it on, press the brake, and press the shifter button it doesn't move. How do I get it out of park? The brake light and dash indicator do toggle ...
3
votes
2answers
2k views

Durability of automatic transmission boxes versus durability of manual transmission boxes? Their lifetimes?

My friend is against cars with automatic transmission because he thinks that they break easily and that their repairing cost a lot. He thinks that it is impossible to maintain an automatic ...
3
votes
2answers
77 views

Difference between “dumping the clutch” and N->D in an auto?

What's the difference between dumping the clutch, and going from N->D at high RPMs with an automatic transmission? Will this cause any damage to the vehicle?
4
votes
4answers
883 views

Ford Focus won't rev high when slipping on snow

Why doesn't my 2010 focus allow me gun it when it starts slipping in snow? It makes it impossible to get out of even a tiny bit of snow. My civic never got stuck because I could always just gun it, ...
4
votes
3answers
12k views

What is ECT Mode for? - Toyota Cars?

I'm not sure if this is a feature on Toyota cars alone, but I currently drive a '99 Avalon XLS and in addition to the D3 mode which I know disables overdrive, right above the radio near the top of ...
9
votes
1answer
422 views

shifting stops when critically low on gas

I have a 1999 Dodge Dakota. It is a V6, 3.9 Liter, auto transmission. I have a weird problem that no one has been able to answer for me. HOW I CAME TO REALIZE THE PROBLEM: One day I was driving ...
2
votes
3answers
64 views

Automatic Transmission: Best practice when waiting at the red light - N or D?

My main concern is the longevity of the engine and transmission. I see conflicting view points on the internet. Some say changing from D to N and back constantly will cause extra wear on the ...
0
votes
1answer
44 views

Do I need a new ECU after replacing the transmission?

I replaced the transmission in my 2002 Lexus RX 300 about one month ago. The mechanics reprogrammed my ECU immediately, and they advised me to replace my ECU with a new one, because with the old ECU I ...
7
votes
9answers
12k 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. ...
13
votes
5answers
61k 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 ...
2
votes
0answers
34 views

Car cranks but will not start after transmission replacement

The 2006 Infiniti G35 would crank but not start after a transmission replacement. I found 2 transmission codes. U1000 which is a CAN bus code and P1815 which is the manual shifting code. It is an ...
0
votes
0answers
33 views

Mercedes sprinter van semi automatic

I have problem with my van. When I want to drive just in first gear, whenever it is in manual or auto, just to move the gear shows on the dash. I try to move suddenly gear like skid so I put it on ...
2
votes
2answers
145 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 ...
2
votes
0answers
39 views

1992 Mitsubishi 3000gt sl. no power and won't go above 2k rpm

I bought an automatic 1992 Mitsubishi 3000gt sl 2 days ago. I got it cheap knowing it would have problems, and that's why I'm here. When I put it in drive and slam on the gas the car just simply ...
1
vote
0answers
47 views

2003 mazda 6 won't move or go into gear

I was driving this vehicle on the highway going home. All of a sudden I noticed the oil light coming on, battery light came on too and I could not go past 60mph. So I suddenly pulled over and as soon ...
1
vote
1answer
30 views

Change of transmission oil

automatic transmission My service manual states that the fluid to use is Dexron 11 .My local garage mechanic used ATF 111 is this ok?
2
votes
1answer
210 views

2001 Mercury Sable — Rough Idle/High RPM and Transmission Leaks

I have a 2001 Mercury Sable (24V DOHC V6) that has been having problems with its vacuum system. I live in Florida where the average temperature lately has been in the 80s. For roughly a month now, ...
1
vote
2answers
167 views

Toyota Corolla 2011 not accelerating when on 60mph or above

I recently bought a toyota corolla 2011 s from a local dealer with 80,000 miles on it. In my test drive everything seemed normal and was satisfied with the deal. But on a recent trip when i actually ...
1
vote
0answers
80 views

Subaru Forester XT has a hissing sound under acceleration and lacks power

I want to buy an 06-08 Forester XT and on Friday I went to test drive an Automatic. Now, I know the auto box isn't the best and the forester weighs a good 300kg/600lbs more than my Astra Coupe, but it ...
4
votes
1answer
633 views

Grinding Sound at Specific RPM/Speed

I have a 2011 Ram 1500. For about a month I thought I was hearing a clunk between 2nd and 3rd gear. I finally decided to listen carefully by turning my radio off. I now certainly notice it, but it is ...
4
votes
1answer
3k views

Ford Escape won't shift into gear, O/D light flashing

I've got a 2002 Ford Escape (automatic transmission) that will start fine and reverse without any problems, but when I put it in drive and try to pull forward, it remains in idle. I can hit the gas ...
2
votes
4answers
2k 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 ...
1
vote
1answer
21 views

2003 automaitic 2.4l dodge stratus transmission concern?

Our starter is out on our Dodge. We had intended on having it professionally towed to our mechanic once we got a date set. A family member took their own initiative to pull it by a rope from a Kroger ...
1
vote
4answers
152 views

Tunning the ECU of a Volkswagen Golf MK6 1.6 TDI DSG

I am a owner of a Volkswagen Golf MK6 1.6 TDI DSG (105HP), and i am a beginner in mechanics, but in computers i am an expert. I stumbled upon those days on some websites that claim to bring you ...
1
vote
2answers
36 views

Audible thud when automatic shifting

My Audi A3 with automatic transmission is emmiting this weird sound when I let off the gas at slow speeds. I think the car shifts up to a more efficient gear (probably 3) thinking I don't need to ...
2
votes
1answer
100 views

Toyota Hilux Surf 1998 Stuck in Park and speedometer and odometer not working

I just bought a 1998 Hilux Surf. It has an automatic gearbox. When pressing the brake the drive selection should be unlocked, but it does not. I need to use the "red button" to unlock the drive ...
0
votes
1answer
53 views

Dodge Magnum feels sluggish

So I've not only noticed the RPM's jumping and falling back down when I get to 40mph I also noticed that when I back up from a parking spot, my car feels as though the emergency brake is on. Then it ...
2
votes
3answers
1k views

1997 Olds 88, trans issue?

A friend of mine pointed me this way due to my current problems; I've been working on this for three weeks and am no closer to diagnosing the issue, so hopefully someone here can point me in the right ...
0
votes
2answers
174 views

RPM jumps up & back down at 40mph

My question is for a 2006 Dodge Magnum, 2.7 liter engine. Just over the past month or so, I noticed when I'm cruisung, just coming from a dead stop, when I'm at 40 mph my car kinda feels like it ...
25
votes
3answers
16k 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 ...
0
votes
1answer
71 views

trans codes trans not shifting o/d is blinking

I have a trans problem my truck lost power o/d light is blinking and trans does not shift at all it has codes that are p1747 p0755 p0743
0
votes
0answers
11 views

JEEP LIBERTY RENEGADE 2003! Transmission 106

What could it be when , on take off you have to play with gas a little to get tranie to kick in to first gear, after that it goes on real well, thanks for any info on this! engine 3.7!
0
votes
0answers
45 views

Location of fill tube for Nissan Pintara auto transmission fluid

Where on a 2.4lt 1989 Nissan Pintara do you put the transmission fluid? I cannot seem to find where it would go, and my vehicle is not changing gears properly.
0
votes
1answer
45 views

Volvswagen Passat went out of control

It was raining, and I was on a Motor Way, driving at about 100 mph and approaching 110. It was an automatic Volkswagen Passat, 12K miles old. The car started behaving weirdly, and it started shaking ...
0
votes
2answers
115 views

In an automatic transmission, what decides to change gears? [duplicate]

So say there is an automatic transmission in a car. Is there a computer inside the transmission that decides to change gears, or is there a computer in the car that tells the transmission to change ...
4
votes
1answer
547 views

2012 Toyota Tacoma won't shift into Reverse

I've just had my 2012 Tacoma towed to the dealership due to the truck not shifting into reverse correctly. I first noticed a problem when I was driving home and the RPMs would get up to between 3 and ...
2
votes
1answer
94 views

Vehicle squeaking 3-4 times when beginning to drive. Stops after getting some speed

Recently I've noticed that my 2012 Nissan Frontier (Automatic Transmission) is squeaking when I start driving from a complete stop. It will only squeak 3-4 times and will go away once I've gained some ...
2
votes
2answers
365 views

On a BMW E46 330Ci, is it necessary to pull the handbrake lever when you're in 'P' mode?

My flatmate drives a 2001 BMW E46 330Ci automatic transmission. I sat next to him while he drove us to the supermarket. When we arrived, I noticed that he only put the gear lever into 'P' and switch ...
3
votes
1answer
79 views

Handbrake Engaged for 9-10 km Driving Roughly 80 km/h

Make: Mitsubishi Model: Pajero Intercooler 2800 Handling: Automatic Year: 1992 I forgot to release the handbrake on my car this morning. I didn't realize I forgot to release it until I had driven ...
4
votes
2answers
360 views

What determines when an automatic transmission shifts?

I'm working on developing an automatic bicycle (mostly microcontroller based) and I'd presume I'd be shifting in a similar way to a car. So my question is, what factors does the transmission take into ...
2
votes
2answers
434 views

Improving fuel economy in high-milage automatic transmission car

Obviously this question is similar to How to improve fuel economy in high-mileage car? except I am asking specifically about automatic transmission car. The car still delivers lots of ...
4
votes
4answers
13k 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 ...
6
votes
2answers
658 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 ...
-1
votes
2answers
136 views

The disadvantages of mitsubishi lancer 2007 [duplicate]

I am planing to buy a new car that has to be good enough to be used everyday . I have tried the speranza and the brilliance but weren't good and not reliable to be used everyday . Many friends ...
2
votes
1answer
464 views

Faulty TCC solenoid or bad computer?

Make: Pontiac Model: Sunfire Year: 2001 Engine: 2.2 L Trans: Automatic Hello to every one, bought my first car and it is fine except for this little annoying problem. After driving it for a ...