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

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3
votes
0answers
55 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
202 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
34k 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
137 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
68 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
94 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
64 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
291 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
48 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
10k 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
96 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
63 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
46 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
38 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 ...
35
votes
3answers
35k 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
182 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 ...
1
vote
1answer
275 views

2006 Saturn Ion won't shift into drive but will in reverse

Couple of days ago my 2006 Saturn Ion transmission stopped working. I can put the car into drive but when I hit the gas it just revs up and doesn't actually go anywhere - it will roll though like it's ...
5
votes
0answers
75 views

Mazda 626 1995 automatic won't shift gears

I have a 1995 Mazda 626, 2.0L, automatic transmission. The transmission won't shift. It stays in 3rd gear and won't go into any other gear. The car does drive, but won't change gear out of 3rd. The ...
5
votes
0answers
30 views

GM 4L60-E Rebuild Questions - Part 1

I am in the process of rebuilding my first 4L60-E (I've done a 4L30-E before) and I had a couple questions. 1st: In terms of the input drum pistons I know there are both aluminum and steel models, ...
8
votes
1answer
57 views

What is the Connection Between Failing Torque Converters and Vibration?

When trying to determine the source of vibrations at idle in my 98 Mazda 626 GF 2L one thing I've found mentioned by many people is a potentially worn out / failing torque converter. However, when ...
9
votes
11answers
57k 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 ...
1
vote
3answers
56 views

03 Pontiac Grand Am will not start. Transmission problems?

I have an 03 Pontiac Grand Am. About 9 months ago I had to put in a new motor, I've also put in a new starter and battery. For the last 5 months my car has not been able to go over 50 mph without my ...
6
votes
4answers
8k 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 ...
2
votes
2answers
445 views

Are BMW automatic transmissions less reliable than manual ones? [closed]

I am considering purchasing a second vehicle and am looking at a 2001 BMW 325i with an automatic transmission; however, I have heard mixed reviews of the automatic transmission in BMWs. Is there any ...
4
votes
3answers
295 views

Shifting Problem

2004 Acura TL 235k miles It takes a while (2-4 sec) for the car to shift from (P)Park to (D)Drive. After the initial change of gears the car runs perfectly normal.
5
votes
1answer
1k 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, I'...
4
votes
3answers
2k views

Could a fuse be responsible for my VW Jetta not shifting while in drive?

Issue with my VW Jetta (2001) Automatic transmission, gasoline engine My tail lights were out because of a missing fuse. So in the dark I looked to find a good one to replace it with (of the ones ...
2
votes
0answers
236 views

Car transmission jerky downshift to 1st gear when braking to a stop

I have an Automatic transmission 2002 Nissan Maxima and want to know if a faulty vehicle speed sensor can cause a car to lurch forward when braking. If I am travelling at 40 mph in 3rd gear and then ...
5
votes
0answers
44 views

what would cause lack of movement in the gas pedal, causing slow acceleration? [closed]

I have a 2002 Hyundai Elentra. Until yesterday every thing was fine. Yesterday I noticed the car was not accelerating normally. I also noticed my gas pedal basically had almost no movement. No ...
11
votes
3answers
24k 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 ...
24
votes
1answer
4k views

What's the Purpose of Park on an Automatic Transmission?

When one wants to park a manual transmission (MTX) vehicle, one puts it in neutral, and engages the emergency / parking brake. With an ATX vehicle, the practice I've learned is to put it in Park, and ...
1
vote
1answer
109 views

Honda oydessy year 2000 does not go in reverse does not go forward but you can drive it in netural [closed]

I have a 2000 Honda Odyssey that only drives in neutral; no reverse or forward. What do you think is wrong?
6
votes
1answer
184 views

How come gears don’t normally change in an automatic car?

I know that there is a similar question here, and another one here that asks when an automatic gearbox knows how to change gear, but I want to know exactly how it does that. It was brought to my ...
2
votes
1answer
193 views

Engine sound rumbles/grumble noise 800-1300 RPM

A 2000 Toyota Celica GTS 225k miles engine makes a mild rumbling/grumbling rough sound when accelerating slowly from a stop in drive or reverse only in the 800-1300 RPM band. Does not occur when in ...
5
votes
1answer
35 views

Motor and radiator problem will there be and damage to motor or anything [duplicate]

Hi guys ive got one question i was looking over this car i was going to buy and there was engine oil in the radiator i ask the guys why it was in there he said he didnt have enough coolant to fill it ...
7
votes
1answer
65 views

My rpms are going high and my mph take a minute to go higher on my GMC Yukon

When I put my truck in drive and step on the gas the RPM's go up to 3,000 but my MPH will stay at 10-15 When I let go of the gas a little bit I can feel the truck kind of pull and the RPM's will go ...
6
votes
1answer
74 views

2000 Celica engine dies or shakes when I pump gas

I have a 2000 Toyota Celica. At first it used to slip gears and then I had a mechanic check it out. He said its a solenoid in the transmission which he changed. The car sputters sometimes when at ...
14
votes
1answer
2k views

What is a governor and what is it used for?

I was watching a classic car restoration program on YouTube in which they were working on a '50s Cadillac with an automatic transmission. The mechanic in the video diagnosed a transmission glitch as ...
4
votes
1answer
34 views

Odd Transmission slip

My transmission gets these odd slips every once in a while. For example, today I was driving slow through town, I believe in second gear, and my foot was very light on the pedal. As I release the ...
6
votes
3answers
3k 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 ...
3
votes
2answers
641 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 ...
7
votes
1answer
152 views

Engagement delay when shifting from neutral to drive or reverse

My 2001 VW Eurovan (T4) has automatic transmission and about 160k miles on the clock. When I use the transmission selector to move from N to D or from N to R, there is a noticeable delay until I feel ...
4
votes
1answer
70 views

will not start, when I just had driven it about a hour ago

2003 grand am 4 door automatic,everything works, lights, radio, windows,buzzes when key is in ignition. I hear nice noise, if it was the battery all the other things in the car would not work. What ...
4
votes
1answer
61 views

How does PCS on 4l60e work?

Looking at the pinout for the connector for the 4l60e there are 2 pins for the pressure control solenoid. 1 pin for HIGH, and 1 pin for LOW. Does this mean the PCS can only ever be in 1 of 2 ...
4
votes
1answer
36 views

1994 Silverado not accelerating past 35

I have a 1994 Chevy Silverado. On my way to work today my truck would not accelerate past 35 mph but was revving high rpm's. I stopped and checked my fluids and my ATF wasnt showing anything on the ...
6
votes
0answers
57 views

Th400 Transmission help

I pulled my Th400 out of my K20 Chevy and I'm in the middle of rebuilding it and I was resembling it and when I went to put the completed gear train assembly in it and the center support assembly gets ...
4
votes
4answers
4k 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 ...
16
votes
4answers
2k 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 ...