Questions tagged [automatic-transmission]

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

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When reinstalling a transmission what other components should be replaced?

2009 Kia Sedona (Base) automatic transmission. that has a rebuilt transmission developed a huge fluid leak suddenly. All fluid gone in seconds. I've taken it out and found that The Tpump bushing wasn'...
XylyX's user avatar
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34 views

Is the clutch in automatic transmission gearboxes unduly used, as with manual transmission, when a car is driven at ultra low speeds?

I have yet to understand how an automatic transmission gearbox works (not CVT—those are trivial). This question is an attempt to figure out a small piece of the puzzle. Properly handled, the clutch in ...
Sam7919's user avatar
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20 views

Car sometimes stalls going from idle accelerating after start

Saturn ion 2004, 2.2L automatic Usually it drives perfectly fine, but sometimes after being turned on cold or more usually turned back on after I've been in a shop for maybe 5-30 mins, the car will ...
AislaSeine's user avatar
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0 answers
26 views

Transmission want shifted into 3rd or overdrive . It's in a 99 chevy z71 5.3 engine was low on fluid i filled it up still only has 1st and 2nd

Transmission was low on fluid so I think it got hot . I put some Lucas in it and it did change any is there a way to fix it with rebuild it
Heavy Chevy's user avatar
0 votes
1 answer
48 views

Do automatic cars shift gears even if the wheels are slipping? [closed]

When cars slip in the snow for example, if you apply full gas will the transmission shift?
Boeing787's user avatar
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2 votes
1 answer
118 views

When should engine fans turn on to cool transmission?

2010 Silverado 1500; automatic transmission; 500,000 km. I suspect the engine fans are not turning on when they should. Reason: When stuck in traffic recently, the truck became sluggish and slammed ...
User1974's user avatar
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Transmission - Poor Shifting - Next Steps

My transmission shifts poorly most of the time. The poor shifting feels like when you manually shift to a lower gear when at speed. The shifting is far from violent and has no audible noise. The ...
user125877's user avatar
3 votes
1 answer
314 views

How do I fix a broken connector inside the transaxle?

Problem I was trying to replace my shift solenoids, and when I pulled the electrical connector off of one of the solenoids, the plastic tab on the connector broke off. I'm concerned that if I leave ...
Charlie Armstrong's user avatar
2 votes
2 answers
646 views

RPM drops quickly after letting off accelerator

The problem: In my 2005 Chevrolet Malibu, the RPM drops down to around idle whenever I let off the accelerator pedal. It feels as if it were a manual shift car and somebody pushed the clutch pedal in ...
Charlie Armstrong's user avatar
1 vote
0 answers
86 views

Toyota Rav4 bucks in reverse

I drive a 2007 Toyota Rav4, and it bucks / jumps in reverse when backing up a steep hill or accelerating on flat ground. When I first noticed the problem, I was backing up an unusually steep hill, so ...
Joseph H's user avatar
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15 views

1997 Chevy Blazer: Will a TCM from a 2001 work in a 1997?

1997 Chevy Blazer 4.3 4x4. Transmission has only one forward gear. Will a TCM from a 2001 Chevy Blazer work in my 1997? Had a trouble code for shifting solenoid a and b and tc and tcm.
Walter Arnold's user avatar
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Need to know the labor time or book times to replace a automatic transmission in a 2017 Dodge journey 2.4 l automatic transmission front wheel drive

I need to know the flag hours to remove and replace a transmission in a 2017 Dodge journey 2.4 l front wheel drive
Mike Daniel's user avatar
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0 answers
92 views

Why did old planetary gearboxes use servos and brake bands instead of multi plate clutch packs to brake certain elements of a planetary gearset?

For example in the picture below you can see an allison cd-850 planetary gearbox which was first designed in mid 1940s and used in patton tanks. We can see that it uses brake bands to hold the ...
Timothy Scherer's user avatar
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0 answers
27 views

Torque converter

I accidentally put qt power steering fluid with qt transmission fluid in torque converter. Put torque converter into transmission hooked transmission to motor then realized. PSF ATF. Will it be ok to ...
Peggy 's user avatar
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1 vote
1 answer
170 views

2002 Nissan Maxima - transmission shifting & performance issues - P0720 & P1574

I have a 2002 Nissan Maxima which which started exhibiting a number of transmission issues shortly before and during a 2,600 mile road trip across the country, and is still experiencing these problems;...
Ethan Bierlein's user avatar
0 votes
1 answer
673 views

Can I shift from D to 2 or L while my Toyota Corolla is moving?

I drive a Toyota Corolla (E120, year 2000). It has automatic transmission with these options: P, R, N, D, 2, L. I almost always drive using "D". If I am driving at around 70 km/h (e.g. on ...
Flux's user avatar
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1 vote
0 answers
49 views

Volvo v60 Shake when shifting to D

I recently bought a 2012 V60 D3, the whole car shake when I shift from P to D. After some research online they say it's a Design flaw with Aisin transmission that cause an internal leak. Does anyone ...
Alan Omar's user avatar
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Why is my car still shaking and making noise after i change the motor mount and transmission mount

I have a 2011 Chevy impala I put on a new transmission mount and motor mount but its still idling and jumping what should I do
Candy Jones's user avatar
0 votes
3 answers
52 views

Hard start and engine stalling

What should I do to permanently fix these car problems? I was called to another garage to fix a 2005 300c chrysler. The problems of the car was Hard or no start, red lightning bolt flashing, no ...
Paulo's user avatar
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0 answers
50 views

Need to get truck tranny fixed

Have 05 avalanche tranny out given a fresh good one out of 99 Silverado. What am I gonna have to do to get it to work in my truck. 1 vehicle. Avalanche is 1500 2wd 5.3 plugs are different on shift ...
user77827's user avatar
0 votes
0 answers
26 views

When put into drive, the car makes a click/crunch noise after a second

2006 Honda Accord with almost 230K miles. When put into drive, the car makes a click about a second after the gear is put into drive. What could this be? Car drives and shift with no problem.
Mo Akashi's user avatar
-1 votes
2 answers
47 views

Is a very harsh downshift indiciative of transmission failure?

I have a 2015 Hyundai Accent with a 6-speed auto transmission. The transmission shift smooth almost all the time. But at certain speeds , if I completely completely depress the throttle from like 0%-...
Scorb's user avatar
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0 votes
1 answer
236 views

Is it safe to change DSG transmission fluid in an old car?

Facts about the car: 16 years old VW with 280kkm/170k miles on the odometer I plan on driving it until it dies 2.0 TDI motor and a DQ 250 02E, wet-clutch, six-speed original DSG transmission no ...
user4520's user avatar
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0 votes
2 answers
93 views

Can 99% of transmission fluid be removed from a transmission through the filler hole?

I spoke with a service shop about getting my transmission fluid changed (in my 2014 Kia Rio 6 speed auto). I was curious if they could get more of the fluid out than myself just dropping the drain ...
Scorb's user avatar
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0 answers
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Megane 2002 auto started shaking and lost power

This evening the car was driving fine and then suddenly when it was idle it started really shaking. We began to drive and it still shook but the engine light began to flash and you could feel the car ...
Robo_b's user avatar
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1 vote
1 answer
59 views

Automatic transmission trouble

I have a Mercedes A-180 with automatic transmission, which has recently started jerking at gear changes, especially the lowest gears - but it isn't always. About half the time it works smoothly for a ...
j4nd3r53n's user avatar
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0 answers
371 views

Automatic transmission truck drops in rpm when i left off the gas pedal in top gear

I have a 1988 Ford F-350 with 7.3 diesel v8 and 3 speed c6 automatic transmission. When i put it in D and im driving at high rpm and take my foot off the gas in 1st and 2nd gears the rpm stays ...
Timothy Scherer's user avatar
0 votes
0 answers
32 views

Swapping F150 transmission from an 03 to a 99

I have a transmission from a 03 Lariat F150 I'm wanting to install in my 99 F150 Lariat. Both trucks are 5.4 automatic with o/d 4x4. Both are Supercab.
Bennie Fulwood's user avatar
1 vote
1 answer
42 views

Why do Automatic planetary transmissions have gear teeth cut on the outside of the ring gear?

it makes sense that there are teeth cut inside the ring gear since planet gears rotate around inside of the ring. However there are also gear teeth cut on the outside of the ring gear, i think they ...
Timothy Scherer's user avatar
5 votes
4 answers
2k views

Should I stop at 'N' when switching from 'R' to 'D'?

I have an automatic BMW 1-Series. But I guess this question can be asked about all automatic cars. Let's say I am stopped at a parking lot in "R". I usually just hold the gear switch and go ...
FerX32's user avatar
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1 vote
0 answers
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2002 Honda Civic (Automatic) Intermittent shifting Issue

I have a 2002 Honda Civic that has started having troubles shifiting from park into reverse/drive. It stays in park just fine. It started where it would shift into reverse and drive just fine, but ...
Adam Yost's user avatar
2 votes
1 answer
129 views

1997 Honda Accord automatic stuck between park and reverse

After starting my 1997 Accord automatic in park, I tried shifting to drive, but the gear selector got stuck between park and reverse. This had happened a few times previously, but it was easily ...
DavePhD's user avatar
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0 answers
22 views

My truck will not accelerate if I pass second gear

2008 Ford F-150 4.6 Triton, Interceptor. Also I had an alert on my phone that the transmission fluid was low( this was in November 2022, the issue happened January 2023)
user74761's user avatar
2 votes
0 answers
31 views

Chervolet 2008 Suburban, how to remove transmission fluid pan? Cable mount is in the way

Was trying to follow this YouTube video for a transmission fluid change (even though his is a 2007 and mine is a 2008), but at the marked point, he says to pry a certain cable mount out of the way, ...
TheLabCat's user avatar
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6 votes
1 answer
2k views

Chevrolet 2008 Suburban, I removed the transmission fluid pan by mistake. Can I just put it back on and refill fluid?

I was trying to change the oil on a Chevrolet 2008 Suburban, and didn't know quite what I was doing. I used Motor Medic Motor Flush, and it said that if the car was over 75,000 since it had last been ...
TheLabCat's user avatar
  • 193
1 vote
1 answer
104 views

Subaru Forester 2008

Just had the transmission changed and all the lights are on ABS Cruise check engine light oil temp flashing when I start the car there is code p0732 p o 763 and PO700 do I need to have this ...
Peter Spinelli's user avatar
1 vote
2 answers
2k views

Vehicle shifts into neutral; requires restart to get going

2010 Buick Lucerne CXL - My car keeps shifting into neutral every time I come to a stop and I have to turn the car off and back on to get it to go back into drive and I have to do this over and over ...
Chelsea Forrester's user avatar
2 votes
1 answer
114 views

Car reversing in drive

2012 Optima (automatic) with a broken transmission casing mount (1 of the 3, was in the process of repairing). Was on the freeway yesterday and I felt a drop/shift in my engine and every dash light ...
stressedonut's user avatar
1 vote
1 answer
200 views

After collision Yaris won't start when in park, or shift into park while engine is running

My kid has a small accident in slow-moving stop-and-go traffic. Yaris rear-ended the car in front if it. The plastic front end of the body was destroyed, between the headlights, from front bottom up ...
Stay-at-home-dad's user avatar
0 votes
1 answer
226 views

Can I swap my 2018 Kia Sorento engine

Want to swap my 2018 Kia Sorento lx engine 3.3 liter with a larger more powerful engine. I'm attempting to make the car more powerful so I can tow more weight than the car is currently rated for. I ...
Shane 's user avatar
1 vote
0 answers
50 views

Ford Escape 2009 - Engine Noisy above 3000rpm

I have a 2009 Ford Escape with automatic transmission with 174,000 miles on the odometer. When I accelerate to 100km/h I am at more than 3000 rpm and the engine is making a heavy noise. A friend ...
roilion1225's user avatar
3 votes
1 answer
2k views

How does the ATF flow between torque converter and the transmission?

I was wondering how exactly the ATF flows between the torque converter and the Transmission, i couldnt see any hydraulic lines connecting the converter and the transmission, how exactly does the ATF ...
Timothy Scherer's user avatar
1 vote
0 answers
111 views

2020 Toyota 4Runner lazy 1-2 shift

Recently picked up a 5th gen 4runner with 50K miles and noticed that the transmission was acting like it was low on fluid, I'm pretty strict with maintenance and I'm a firm believer in changing fluids ...
b.stevens.photo's user avatar
0 votes
1 answer
865 views

Car stalls when trying to accelerate after a stop

I have a 2015 Chrysler Town and Country with ~70k miles; check engine light is off. Recently, over the past 2-3 months it has developed a symptom where the car randomly stalls when accelerating after ...
MonkeyZeus's user avatar
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0 votes
0 answers
12 views

I have a 93 f150 5L auto tranny w/OD electric 4x4, its slipping. I have a 91 f150 5L auto tranny w/OD manual 4x4 shift. Will 91 tranny work in the 93?

<I have a 93 f150 5L auto tranny w/od electric shift 4x4 gone bad.I have a good 91 f150 5L auto tranny w/od manual shift 4x4. Will 91 tranny work in the 93?>
Dale's user avatar
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1 vote
1 answer
410 views

Ford Sport Trac has no reverse

On a 2010 Sport Trac 4.0 I have no reverse. My trans slip ratio still reads when in reverse and not moving. Would this be as simple as a Manual lever position sensor gone bad or a problem with the ...
Dann's user avatar
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26 votes
6 answers
14k views

Does a Car Keep Moving If Neither Accelerator, Nor Brake Is Pressed?

I am not sure if if this is the right forum to ask this, but even my driving instructor cannot give me a clear answer, hence the question. Learning driving on a toyota vios, automatic transmission. ...
Della's user avatar
  • 363
3 votes
1 answer
451 views

2004 Accord V6 auto transmission fluid

I just changed the transmission in 2004 Honda accord v6. How much transmission fluid do I need? The torque converter and all has been drained on the new one.
tina grate's user avatar
5 votes
3 answers
2k views

What all do I need to buy when installing new transmission and torque converter

I'm installing a rebuilt automatic transmission in my 1992 Chevy Silverado 1500 extended cab two wheel drive. What all should I buy at the parts store besides transmission fluid , pan gasket and new ...
Jaime T's user avatar
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2 votes
2 answers
576 views

No Overdrive - Flashing O/D light

I have a 2000 Ford Explorer XLT 4.0 OHV that is giving me some issues. The transmission was replaced 50,000 miles ago and is now experiencing some issue. It won't shift into overdrive and randomly ...
matt.'s user avatar
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