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

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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
3k 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 ...
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0answers
228 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 ...
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1answer
46 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?
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1answer
662 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, ...
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2answers
387 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 ...
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0answers
238 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
1k 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 ...
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4answers
3k 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 ...
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1answer
24 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 ...
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4answers
288 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 ...
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1answer
58 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
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1answer
231 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 ...
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1answer
118 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
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3answers
2k 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 ...
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2answers
759 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 ...
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3answers
23k 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 ...
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1answer
161 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
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2answers
236 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
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1answer
704 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
125 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
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2answers
738 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
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1answer
177 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
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2answers
928 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
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2answers
555 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 ...
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2answers
3k 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 ...
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2answers
268 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
491 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 ...
3
votes
1answer
393 views

Better to repair a CVT or replace with a used one?

Our 2003 Honda Civic Hybrid transmission died. Honda gave us an estimate of $4500 to replace the transmission. We took it to a different mechanic who suggested that instead of replacing the whole ...
2
votes
1answer
242 views

What are MDLA and MDMA?

I'm looking at stuff for my 2001 Honda CR-V on Amazon.com, and it has a filter for transmission type. There are two options for automatic: MDLA and MDMA. I have searched on Google, and found the ...
7
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5answers
16k views

Switching from Reverse to Drive - always stop completely?

I've been told by a couple people that it's really bad for a car to be shifted from Reverse to Drive while the car is still moving backwards. Is this true? In my experience: On automatic cars, this ...
3
votes
1answer
1k views

Manual ECU with Automatic Car

Have 92 Accord with 1.8 VTEC. The Installed Engine is From 98 Accord. The transmission is the original which came with 92 accord. This transmission is operated by Kick Down cable and does not have any ...
4
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2answers
2k 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 ...
2
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1answer
122 views

Caravan Automatic Transmission gear selector

2001 Caravan. Very hard to change from park to any other gear. Selector very loose when pulling down to shift but very hard to get it to stop at a specific gear. Then it is almost impossible to put ...
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1answer
77 views

2001 Acura CL hard downshifts

Not sure of a better title, but Ill try to explain what I am experiencing as best I can. I've driven a few different automatic transmission cars with a manual mode. Normally when down shifting (to ...
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2answers
211 views

Automatic & manual transmission

I read the following: Automatic transmission uses torque converter and planetary gears, while manual transmission uses clutch and a gear box. In automatic transmission, computer and hydraulics ...
2
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1answer
58 views

Can scraping the transmission bad

I had to drive on a very poorly paved street a few weeks ago with my car, and it was so poorly paved that I felt I was offroading, due to the deep potholes, at one point, my car's underbody kinda hit ...
5
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1answer
2k views

Automatic Transmission or Differential Backlash (Play)

I noticed that my car has what it seems to be significant differential play. I have a 1993 Acura Integra with automatic transmission. What I mean by play is simple: say I jack up only one front wheel ...
3
votes
1answer
96 views

AWD truck doesn't shift smoothly. I was advised to not change the transmission fluid

AWD Mercury Mountaineer. 1997 Automatic transmission. 8 cylinder 5.0L 150k miles. fairly good shape. Pretty awesome truck. From 1st to 2nd gear, the transmission shifts with a light clunk. Also, at ...
0
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1answer
95 views

How to identify transmission issues

I have a new Camry L (4 cylinder 5 gear)with about 6k miles on it. Whenever I push the car from 0 to 30 mph and then let go easy on the gas to keep the car at 30-35, then I can feel the car 'jerking' ...
3
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5answers
2k views

Should you change all of your transmission fluid?

I took my Lexus RX 300 to the shop, to change the transmission fluid. While talking to the tech, he said he sucked out half the fluid and left the other old half there. Is this proper? Shouldn't they ...
2
votes
1answer
961 views

2006 Cobalt SS - Traction Control Light & Hard Shifting

I drive a 2006 Cobalt SS (not supercharged) with the 2.4L engine. In the last month or so the traction control light has been coming on periodically. Turning the engine off and back on causes the ...
4
votes
2answers
1k 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 ...
14
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2answers
7k views

Why doesn't the engine stall out when you come to a stop with an automatic transmission?

When you come to a stop with a manual transmission you have to push the clutch in or take it out of gear to keep the engine from stalling out. What keeps the engine from stalling in an automatic ...
3
votes
1answer
114 views

Is my transmission about to go?

I drive a 16 year old Subaru Legacy automatic which still has its original transmission and has never given me a moment's trouble in 16 years. Today while pulling out of a parking spot, I suddenly ...
4
votes
2answers
1k views

Saab 9-3 stuttering and cutting out [closed]

I've got a 1999 Saab 9-3 2.0l Automatic (not the turbo). It's been running fine, then a bit more than a month ago it started to stutter when accelerating or decelerating. Only occasionally, but it ...
2
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2answers
510 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 ...
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vote
2answers
331 views

How to know when automatic-transmission box needs to be changed?

My friend is very odd: this thread about durability comparison between automatic/manual durability meant to him that manual is always better option because you can learn to change the clutch and only ...
3
votes
1answer
1k views

Howling sound when accelerating

I have a 2007 Ford Ranger that makes a faint howling sound when I'm accelerating, usually after being idle at a stoplight. I've tried slowly revving in neutral and I didn't hear the same noise. ...
1
vote
1answer
202 views

Automatic Micra moving on its own & idle speed

Just bought a used Nissan Micra (automatic transmission). When I depress the brake and change into D or R to move off, and then let go of the brake, the car starts moving off slowly. Only had one ...