Questions tagged [automatic-transmission]

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

166 questions with no upvoted or accepted answers
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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, ...
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1answer
546 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 ...
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1answer
103 views

Toyota 4Runner - automatic (Old model ) misfires and delay in changing gears. What is the problem?

My Toyota 4 Runner (old model) misfires and seems lazy especially while climbing hills. There is also a delay in changing from gears 2 - 3 and 4. Can someone please help to advise? Thanks in advance.
5
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1answer
2k 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. I've been experiencing a ...
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66 views

Will it harm the transmission to drive with a defective Turbine Speed Sensor?

I recently got a 0715 DTC ( 98 Mazda 626 GF 2L, GF4A-EL transmission ) which is related to the turbine speed sensor. Some of the symptoms according to the ATSG transmission manual are harsh and ...
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60 views

Transmission Swap – how to modify mounts?

My car has in a Toyota 4e engine which uses a Corolla 3 speed transmission. The transmission is faulty so I would like to change it to a 4 speed Toyota Starlet transmission. The Starlet uses the same ...
3
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1answer
319 views

How necessary is it to fully purge old fluid during a transmission fluid flush?

I see a lot of these videos on YouTube of folks pouring in several liters of automatic transmission fluid into their transmissions as they collect the increasingly cleaner and cleaner fluid that ...
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75 views

Why does my car slip from drive to neutral by itself?

Hello my name is Evelyn and I have a 2015 Ford Fiesta SE that I bought new. When I first got the car is had trouble shifting, it acted like a 4 speed car. What I mean is it would whine when it changed ...
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0answers
371 views

I have a 1999 Isuzu Trooper. Can't figure out problems

I have a 1999 Isuzu Trooper. 3.5 liter V6. Automatic. My problem is, if I have it in neutral or park, the engine runs great. Smooth, no weird noises, it'll rev up to red line RPMs no problem. However ...
3
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1answer
38 views

Have 01 Dodge ram 2500 desiel automatic transmission

Transmission started making grinding noise on way home. Took forever change gears put it in my garage dropped transmission found round bearings in bell housing. I can't tell if they were from front ...
3
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1answer
62 views

Odd Auto Transmission Issue - 2002 4Runner 4WD

I have a 2002 4Runner (the V6) that sits for a few weeks at a time between uses (I live in coastal FL). If I haven't started it in a while when I put it into Drive the gears don't seem to engage ...
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83 views

Chevy Silverado 1991 /w no reverse

I have a Chevy Silverado 1991 with a 454 engine (6.4 liter) and has a 4l80e transmission. The last couple months shifting in reverse was a problem. You could hear the normal sound of it shifting but ...
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2answers
3k views

Nissan X Trail 2001 engine RPMs increase, but vehicle does not accelerate, has no power

2001 Nissan Xtrail. After driving for more than 20 minutes, the car seems to have less power. The rpm will go way up, but the car is slow. Rpm can go near the redzone, yet I’m still driving at 10-...
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84 views

'92 Hilux moves with gear in Park

This is a 1992 Toyota Hilux Surf Turbo Automatic. Just a quick question, chasing a fault on a Hilux: won't start off the key went through all fuses, relays and wiring, replaced old bushes in ...
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2k views

Reverse gear in Auto transmission not properly engaging after pushing car

I have a 1997 Audi A4 quattro that was not driven for a while, It was given to me by a friend who emigrated. All gears were working fine however the battery was flat and the car was parked right up to ...
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0answers
226 views

Odd lag with Mitsubishi ASX auto

I was test driving a 2017 model ASX - 2.2 litre auto diesel - and experienced an odd lag at one point. Having driving other automatics, I understand there's a bit of lag - but this was very unusual. ...
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2k views

Stuck in d3..please help

My 2006 Honda Accord is stuck in d3. It's just now happened. It still seems to be shifting like it would normally. And I can move the shifter down but it will not go from d3 to d, N, R, P......any ...
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0answers
111 views

Drivetrain stuttering on 2001 F-150 automatic

I have a 2001 F-150 with what I believe to be the 4R70W transmission. It's a 4 speed automatic with the 4.6L engine. The past two times I have driven it I have gotten a massive shaking and stuttering ...
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0answers
682 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 ...
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0answers
2k 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 ...
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0answers
256 views

Vibrations and Torque Converter Failure

I've read in various places that one cause of vibrations when shifting from Park to Drive in an ATX is impending torque converter failure. Another person asked about the different ways in which a ...
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0answers
1k 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 ...
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850 views

Signs of a bad transmission?

I have a 2004 Subaru Legacy L Sedan Automatic. I've been starting to notice in the past few months that the transmission is shifting strange, typically either when the car first starts up, or has been ...
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0answers
194 views

Changing Ford e4od to 4r100

e4od is a gear driven speed sensor/ 4r100 is reading directly off tail shaft and signal is much faster causing speed to read much faster. Is there a way to put an in-line adjustable type signal ...
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0answers
1k views

Possible transmission fluid leak

2001 Toyota 4Runner SR5 265K miles. I haven't driven it in 2 days and came out and found a small pool (about 2 teaspoons at the most) underneath the engine area. It's clear with a tinge of red, no ...
2
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1answer
25 views

Refill 2005 Toyota Tundra automatic transmission fluid

I made a mistake and drained the automatic transmission fluid on a 2005 Toyota Tundra with a sealed transmission. I was working too fast and pulled the AT drain plug rather than the oil drain plug. ...
2
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1answer
60 views

Do Check Engine Light Codes get Stored in ECM if the check Engine Light turns off on it's own?

I have a 2010 corolla with 166k miles on it. I have never had any major issues with the car. This past Saturday I drove about 300 miles and just as I was about to get home I got 3 lights that turned ...
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0answers
40 views

Electronic Pressure Control, EPC

In short, the question is: How the EPC affects an automatic transmission? I'm planning to build an automatic transmission controller module, TCM for 4F27E Ford transmission. So far I haven't found an ...
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2answers
130 views

How do purely mechanical (early) automatic transmissions know when to shift?

How do early transmissions know when to shift? How do they go to the right gears for the right conditions (heavy acceleration, going up a hill etc.)? I cannot imagine how it is done without electrical ...
2
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1answer
67 views

1973 dodge sportsman motor home

The engine won't start. When I turn the key, absolutely nothing happens. There is only a click from turning the key. My battery is full. I bought this motor home last summer after my landlady sold ...
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0answers
30 views

BMW jumping to park at stop

My BMW X1 (2013, 2.0L Turbo) occasionally jumps to Park when I'm stopped at a light. It happens whether the auto engine start/stop function is on or off. I then have to put the car in drive again to ...
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0answers
41 views

2004 Kia Spectra 1.8 Automatic - No Reverse

A 2004 Kia Spectra 4cyl 1.8ltr automatic Reverse was working fine one day then the next it no longer worked. All the other gears work fine and the transmission fluid level is where it should be. I ...
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0answers
69 views

Cause of Auto Transmission Failure

I have a 2003 Honda Accord v6 coupe with a 5 speed automatic transmission - code baya. I recently had the transmission fail on me extremely suddenly and left me stuck on a highway. I want to stress ...
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0answers
237 views

Transmission or torque converter issue?

Long story short, car is a BMW 530d automatic from 2012 with the ZF 8 HP transmission. The problem is, after the timing chain was replaced, 2 years ago (and transmission pullet out to do that), the ...
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100 views

testing auto 4L60E transmission while not in vehicle

is it possible to test while not installed in vehicle my auto 4L60E transmission
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77 views

Am I risking engine or other damage by “babying” a failing transmission?

The transmission in my 2002 Honda Odyssey is on the way out. When cold, it tends to slip from 2nd back to first and sometimes also does weird stuff in 3rd and ultimately goes into limp mode. I did ...
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0answers
108 views

1983 Chevy Midas motorhome engine question

My mother was driving her motorhome to a campground the other day. I was following behind her in our car. About 2 hours in, there was an "explosion" of some kind. It was massive amounts of white smoke ...
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2answers
1k views

2000 Honda Civic automatic transmission issue

Please help! I have a 2000 Honda Civic ... car starts and runs fine but when I put it into drive or reverse. The car acts like it’s in neutral and only revs the engine but will not make the car move ...
2
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1answer
5k views

How Can I Determine How Much Transmission Fluid To Add to My Truck When The Dipstick doesn't seem to be correct

I recently bought a 2001 F-150. The first time I checked the transmission fluid level, it looked like it was overfilled but the filler tube mount had rusted off and I figured it wasn't accurate. Last ...
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0answers
166 views

2007 CrownVic Transmission slips when engine is cold and loses power in turns

I have an 07 Crown Victoria Police Interceptor. It has around 100000 miles and ive had it a year. Lately it has started to die when I make a right hand turn. What I mean by that is my foot will be ...
2
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1answer
216 views

Are 4r70w transmissions interchangable?

I have a 2006 e-150 that needs a transmission. The transmission I took out was a 4r70w. I found a 4r70w out of a 2000 e-250 on ebay. Can I use that transmission as a replacement? The seller only ...
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0answers
87 views

jumping RPMs around 60-100kms when i push it harder , lower acceleration due to this issue

I've got a 2001 Honda Civic 1.7L 4cyl. engine with an automatic transmission. My issue with it is mainly I find when accelerating faster, like merging on a highway, if I try to push it until it ...
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0answers
43 views

Automatic transmission difficult shift to upper gears

The car is a 1986 Ford Thunderbird 2.3L Turbo coupe, automatic transmission. Just got it for a few weeks and found it was very jerky when it tries to shift to higher gears, especially around 30 MPH. ...
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0answers
218 views

Gearbox issues VW Bora MK5 (Bora in Mex) 2007

I've been driving my VW Bora for 7 years. Has had its regular oil changes, tune-ups, tires and brake changes. I love my car and want to keep it perfect. For the last 6 months I have felt that the ...
2
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0answers
141 views

Single “thunk” sound when coming to a stop

Vehicles: 1996 Dodge Intrepid, 350,000km, 3.3L V6, 4-speed automatic 2000 Ford Windstar, 168,000km, 3.8L V6, 4-speed automatic Symptoms: I've seen this on 2 vehicles now (the 2 above). When slowing ...
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0answers
5k views

BMW X3 Jumps to Parking mode

I drive a 2012 BMW X3 F25 (2.0d) automatic. Very frequently, when I come to a halt, the shifter jumps to parking mode. If I disable the Start/Stop system, the problem seems to disappear. I got many ...
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0answers
100 views

Strange Automatic Transmission Issue

I'm not sure if this is cause to worry or not, but there is a bit of back story to this as well; I drive a 2006 Toyota Corolla with an automatic transmission. About 3 years ago, a line in my ...
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0answers
1k views

Slipping Automatic Transmission when Cold

Car: VW Touareg 2007 2.5 TDI 90,000 Miles Symptoms: Does not engage the clutch plates when cold and slips in all gears. When you take your foot off the accelerator, the revs drop down to idle while ...
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0answers
586 views

Speedometer doesn't work and transmission won't shift

I have a 95 GMC Sierra with a 4.3 V6 and automatic transmission. The speedometer doesn't work and will not shift on it's own. I have replaced trans fluid and filter(no shavings or anything abnormal ...
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0answers
1k views

Reverse on Auto transmission isn't engaging properly after extensive engine braking

First post onto this forum. We have a 2012 Hyundai SantaFe with a 3.6 Super charged petrol engine. Recently we spent some time visiting the local mountains, and I needed to use the auto box in a low ...