These are questions regarding either manual or automatic gearboxes and their component parts.

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6
votes
1answer
221 views

Converting floor jack to tranny jack?

Is it possible to adapt/convert a regular floor jack to a tranny jack for the purposes of lowering the transmission assembly?
6
votes
1answer
1k views

Sometimes my second gear is rough to engage. What could be wrong?

So I've got an odd problem for a 2004 Toyota Echo. The second gear, sometimes not always, is hard to engage. If I be real gentle, and just put a bit of pressure, it would slip in. I could also be a ...
6
votes
6answers
20k views

How will I know clutch pads need replacing?

I have a manual shift honda civic. How would I or the motor mechanic know that the clutch pads need replacing? Would they check it during oil change? Certainly you don't open the transmission box to ...
6
votes
1answer
58 views

How to calculate the angular velocity ratio of a cardan shaft?

Recently this question has been bugging me, and while it might seem simple, I was not able to find a satisfactory answer. Suppose we have a cardan coupling like in the following picture, where the ...
6
votes
1answer
70 views

Car manual says I have to wait a few seconds before shifting to reverse, why?

I am the type to read the owners manual of everything I buy. I am a new driver and I have just read my owner's manual. As the questions says, it's telling me not to instantly shift to revers when I ...
6
votes
1answer
154 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 ...
6
votes
1answer
189 views

Weird grinding sound from the gear box

It is not like when you try to shift a manual stick without the clutch. But a lot lighter than that varying in amplitude (louder and lower) and probably is only there when the engine is cold (Because ...
6
votes
1answer
327 views

What does it mean to have a stiff first gear?

This problem is a small one and it can only occur with manual cars, but I have been curious to find out more about it for a while now. Sometimes, when the car is attempting to pull away from a ...
6
votes
1answer
221 views

Scania clutch issue with syncromesh gearbox

The clutch of our 124 Scania stopped working properly with the "14 speed" syncromesh gearbox. The first time it happened, it ground instead of smoothly going into reverse (a non-syncro gear), to back ...
6
votes
1answer
84 views

Wrangler JK transfer box options

Apologies for a very Jeep-centered question, that may not interest everybody. Here goes: I own a 2009 Wrangler JKU (pre face-lift), equipped with the 2.8 TD engine, Chrysler NSG370 six-speed manual ...
6
votes
0answers
40 views

How to measure transmission fluid levels?

I understand the newer Audi A3's with either type of transmission (auto or DSG) has a really weird way to check (to normal pull the dipstick type checking) the transmission fluid. Can someone please ...
6
votes
0answers
71 views

Pontiac G5 transmission sometimes grinds when shifting into first while stopped, occasionally stalls car

I have a 2007 Pontiac G5 with a 5-speed manual (Getrag F23 if you're curious) and about 145k miles. This problem has been ongoing for a couple years now but is progressively getting worse. Sometimes ...
6
votes
1answer
23 views

Is my 1999 blazer having transmission problems?

I have 99 Chevy blazer. It never wants to get moving right away. it takes 30 seconds to a minute before i can get fully going. It also shakes when I at a red light or stopped. i noticed today that ...
5
votes
3answers
6k views

Semi-automatic car inadvertently driven in manual mode

I have a 2008 Mazda 3 car with a semi-automatic transmission (i.e. it is automatic with the ability to switch to a manual mode). On the weekend, it was driven by somebody else who accidentally put it ...
5
votes
2answers
169 views

Why is it that the front of the car lifts up when releasing the clutch?

I don't know much about the inner workings of a car. For driving one, I find that having an rough idea about what the gearbox, engine and clutch do and where they are is often enough. However for the ...
5
votes
2answers
2k views

What is that knocking sound my engine makes when the revs drop too low?

I have a 2013 Subaru Impreza with a 2.0 liter engine and a manual transmission, and when I let out the clutch too fast while in reverse or 1st, sometimes the engine RPM will drop so low that it makes ...
5
votes
3answers
393 views

Are there cars that can shift to reverse even while moving?

I am aware that a car has to be at full stop in order to shift to reverse. Then I saw a video which was able to do a reverse without even stopping. Insane parking https://www.youtube.com/watch?v=...
5
votes
4answers
12k views

1 Piece versus 2 Piece Drive Shaft

A guy on a Nissan forum asked why he should keep his 2 piece drive shaft in his truck instead of changing over to a 1 piece version. This was the answer I gave him: The 2 piece drive shaft (DS) ...
5
votes
3answers
11k views

Burning smell, leak, losing power. Maybe transmission related

First off, I know almost nothing about cars. I can fill them up with gas and drive them. That's about it. This car is a '99 Subaru Outback, automatic. When I last took my car in for an oil change, ...
5
votes
2answers
7k views

Engine braking with an automatic transmission

For reference, I've reviewed these three questions: Manually shifting an automatic transmission? Does Downshifting (Engine Braking) Cause Extra Wear and Tear? Is engine braking harmful? I drive a (...
5
votes
1answer
62 views

What is meant by the term “gear ratios”?

I don't really understand the idea behind gear ratios. Does this just mean essentially that the gears (cogs) are all different sizes? What specifically does the term "gear ratios" mean?
5
votes
3answers
3k views

How can I be sure my vehicle is a 4x4 / AWD?

I bought a pre-owned Volvo XC90 - 2007 3.2 V6 AWD. Or at least that's what it says on the car and the paperwork. Even in the dry, this car regularly spins the front wheels and there is fairly ...
5
votes
2answers
69 views

Is this the ATF drain plug on 06 Ford Fusion (please confirm)?

2006 Ford Fusion SE Auto. I have it jacked up now ready to do a drain and fill of the ATF fluid but I'm not 100% sure about the drain plug. If you know this car please confirm, is this it in the pic? ...
5
votes
4answers
21k views

Random RPM jump when accelerating hard

I should state first off that I'm not much of a car guy when it comes to the actual mechanics behind them. I just wanted to check if there's anything going wrong with my transmission. I drive a 03 ...
5
votes
1answer
3k 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 ...
5
votes
2answers
5k views

Host of small performance problems in 2006 Hyundai Elantra

I bought a used 2006 Hyundai Elantra (Automatic) back in early 2011. At the time, I was needed to have a car quick, and it seemed like a good deal, but the longer that I've owned it, the more problems ...
5
votes
1answer
71 views

Manual transmission noise

What causes a grinding or scratching noise when shifting from 2nd to 3rd Gear on a 2000 Celica GT? I did have my mechanic add some gear oil but was thinking maybe I should have him drain out old ...
5
votes
1answer
816 views

Manual Transmission Whirs when coasting down, clutch disengaged, shifter in gear

I have a 2004 Nissan Xterra. When I am at speed, usually in 3rd or so, and I am coming to a stop, I disengage the clutch, brake, and coast to a stop, with the shifter still in gear. As I do this, ...
5
votes
1answer
63 views

5th Gear slipping out when letting off gas pedal in Toyota Landcruiser HJ75 - 1990)

Whilst driving, when I take my foot off the accelerator in 5th gear, the stick/vehicle goes into neutral. It's doing this more and more. Any thoughts?
5
votes
1answer
48 views

1995 Dodge Viper

So my friend is interested in this 1995 Dodge Viper he's seen on a pre-owned showroom and I have some questions that I'd like to ask. What kind of questions related to that specific car should we ...
5
votes
1answer
229 views

Rust underneath rear of car (Toyota Mk1 MR2)

I have recently acquired an old (1989) Mk1 Toyota MR2 and took a few photos of the underside rear of the vehicle. There seems to be a fair amount of rusting on the rear axle and gear box: gear box/...
5
votes
2answers
83 views

01 gti not going into reverse 1st 3rd or 5th after I changed the clutch

So I changed my clutch a few days ago and now it will not engage reverse 1st 3rd or 5th gear but will engage 2nd and 4th no problem with the car on and off. I readjusted the cables but still nothing ...
5
votes
1answer
96 views

Major transmission failure - Manufacturing fault?

I have recently purchased a brand new 800cc 4 speed manual dune buggy. As part of my testing after around 3 hours of driving (carefully and without any impacts) the manual transmission has essentially ...
5
votes
2answers
618 views

Why can't the 3rd generation Mazda rx7 safely coast downhill in neutral?

The manual for the 3rd generation Mazda rx7 says not to roll downhill without the engine engaged, because the exhaust can overheat. Unfortunately, the manual does not explain the mechanism by which ...
5
votes
1answer
86 views

Car is shaking, feels like the car doesn't have as much power, gear knob also shaking and exhaust smells of fuel (and was louder than usual)

Okay so the car is a Nissan 200SX S15 and as i'm relatively new to the manual transmission I wanted to practice hill starting (which is where I screwed up). I pretty much let go of the clutch way too ...
5
votes
1answer
111 views

Mystery Sensor on Manual Transaxel Housing

I have a 97 Mazda - 323 S V (BA) - 1.8 i 16V (114 Hp) with a manual 5 speed transmission. While trying to change the oil, I noticed the following connector, with one missing wire on what I think is ...
5
votes
1answer
3k views

Passing Emissions Test: Can't figure out how to fix code P0705 on a 1997 Nissan D21 / Hardbody / Pickup

So hello. I have had a lot of luck with my other vehicles on forums and a recently became the (hopefully-soon-to-be)-proud owner of a 1997 Nissan D21/Hardbody/Pickup XE. It has 156k miles on it and is ...
5
votes
1answer
555 views

Jerks on 2nd gear at low speed

My car jerks on second gear when I slow down while on second gear and then want to accelerate back. After changing the plugs and air filter it got a bit better but after driving 500+ miles it is back ...
5
votes
0answers
68 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
56 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 ...
5
votes
1answer
506 views

2002 Peugeot 206 Clutch won't disengage

When the car is running, I am no longer able to put it into any gear; like it would happen when you're not holding the clutch, so that is one of the reasons why I think there is something wrong with ...
4
votes
4answers
102 views

Will my 2002 Mustang make it from California to Iowa?

I have a great 2002 Mustang automatic 6cyl in great condition, but I am a worrier and want some outside opinions. I am the second owner of the vehicle. Have owned it for 1year, 7 months and I get my ...
4
votes
2answers
1k views

Rental car gearbox broke down

Last week end, I rented a car, fairly new car (probably 1 year old). On the way to give it back, 20 minutes before arriving, the gearbox just broke. I couldn't accelerate etc. During the week end, I ...
4
votes
5answers
4k 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 ...
4
votes
1answer
260 views

What is “Long Gearing”?

I see in some city car reviews, like the Citroen C1, that they have something called "Long Gearing". What is Long Gearing? What are the implications of it?
4
votes
2answers
2k views

1st gear hard to engage unless stopped, Subaru 2004 Impreza Outback Sport

Since I've bought my 2004 Impreza Outback Sport, I've had a problem with shifting into 1st gear. First gear is generally difficult to engage while moving. You can just force it, but it's really ...
4
votes
2answers
154 views

Safe Way to Remove Engine Mount Support?

I'm working on a 98 Mazda 626 2L and I'd like to change the transaxle oil filter. However, a number of the pan bolts are blocked by a beam which has an engine / transmission mount sitting on it ( see ...
4
votes
2answers
88 views

Shifting on a motorbike by preloading

I have a few different questions that popped into my head after reading about preloading the shifter in motorbikes, here's one of three: Shifting between 1st and 2nd on a motorbike - will the bike ...
4
votes
3answers
8k views

Reverse difficult to engage with manual transmission

I have a 2000 VW Jetta TDI with a manual transmission. In the past few days, I have not been able to push the gear shifter into reverse without letting up on the clutch. I get about halfway from ...
4
votes
2answers
53 views

Skipping speeds when downshifting

Is it bad to skip speeds when downshifting manually, e.g. from 4th directly down to 2nd etc?