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

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4
votes
1answer
19 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
55 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, ...
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 ...
3
votes
0answers
29 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 ...
6
votes
3answers
174 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 ...
7
votes
2answers
102 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
1answer
48 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 ...
7
votes
1answer
55 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
17 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 ...
7
votes
1answer
46 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 ...
6
votes
2answers
46 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 ...
0
votes
0answers
16 views

Automatic gears stopped while driving cant' put in any gear? [duplicate]

I was driving and the car was still running however auto gears would not engage in drive or reverse so I had to stop and get off road? Mitsubishi Verada 2003.
1
vote
0answers
23 views

Mitsubishi Verada 2006. 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?
3
votes
1answer
82 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
43 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
27 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 ...
1
vote
1answer
33 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 ...
3
votes
0answers
35 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 ...
5
votes
0answers
23 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, ...
5
votes
0answers
40 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 ...
7
votes
0answers
90 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 ...
10
votes
3answers
1k views

How does the transmission not strip itself when applying the brake?

Quick question bugging me: Obviously the car moves forward when neither applying the brake nor the accelerator. How does this not damage the transmission when the brake is pressed? I first ...
1
vote
3answers
47 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 ...
8
votes
1answer
47 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 ...
3
votes
2answers
61 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 ...
4
votes
3answers
256 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.
2
votes
2answers
123 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 ...
17
votes
7answers
3k views

Are manual transmission cars disappearing? [closed]

You don't have to be an expert to notice that over time, the percentage of manual transmission cars has lowered. Automatic cars are not only more popular, but more comfortable, easier to use and ...
4
votes
1answer
106 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 ...
5
votes
0answers
42 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 ...
24
votes
1answer
3k 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
60 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
93 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 ...
5
votes
1answer
33 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
58 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
57 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
1k 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
31 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 ...
7
votes
1answer
85 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
63 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
42 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
32 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 ...
9
votes
1answer
91 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, ...
5
votes
0answers
53 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 ...
3
votes
2answers
43 views

Mazda 3 2011 1.6 Lts Gasoline - ECU

I was wondering if its possible for a Mazda 3 2011 AT car to function without ECU? The reason I am asking is When I start the engine, the CheckEngineLight doesnot come at all When I took my car for ...
7
votes
2answers
87 views

Normal Operating Temp for an Automatic Transmission

While I was able to find information on testing the ATF temperature sensor in the GF4A-EL manual I've got: I was unable to find any info on the normal operating temperature of the transmission. ...
7
votes
1answer
195 views

What should one do to reduce the HP lost at the wheels on an automatic transmission?

I have a 1990 Toyota Supra Turbo 4 speed auto. I've done some research about automatic transmissions and manual transmissions and what are the positives and negatives of each. (For example, MT is said ...
7
votes
1answer
71 views

Will increasing line pressure increase torque capacity?

I was wondering if one were to increase the line pressure sent to the clutch packs/bands on an A/T would that increase the torque capacity of said transmission? I figure it would because it would ...
5
votes
1answer
80 views

Automatic Transmission - Reverse Flush, what is this procedure and why is it dangerous?

I recently, moments ago, saw in a post a mention of a reverse flush in reference to an automatic transmission fluid change. The responder mention the dangers of a reverse flush and that many of the ...
2
votes
0answers
73 views

Transmission Fluid Change - High Mileage Vehicle [closed]

Should I replace the ATF in a 2007 Honda Odyssey w/ 208,841 miles? Numerous shops advise against drain/ refill. I last changed @ 144k & was advised not to do it ascI could encounter transmission ...