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

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3
votes
1answer
3k views

Toyota FJ Cruiser transmission problem

Got Toyota FJ Cruiser 2010 Automatic, 4x4 full stock (no warranty, I live in Central Europe). I have strange transmission issues. I had already spent 2,5 years of life and about 2500$ just to diagnose ...
1
vote
1answer
641 views

How to generate involute gear milling Gcode

I need to make some gears/pinions myself. I have access to a high quality 4-axis CNC mill, but not to a lathe. I'd like to cut these gears out of flat stock (facing), rather than round (edgewise) ...
0
votes
0answers
134 views

Volvo 940 Dashboard Flashing winter Driving arrow

The flashing “winter driving” arrow on the dashboard according to the maintenance manual calls to take it to a Volvo dealer due to a transmission failure. Could this be due to cold weather, and what ...
1
vote
2answers
773 views

How does a belt drive CVT variator work?

The title basically says it all, but I am the most interested in what the rollers actually do?
1
vote
1answer
138 views

How well should a slip yoke be polished to give a proper seal?

Gear oil started leaking out of the rear output seal on my '01 Outback started -- onto the exhaust of course, as every fluid in a Subaru seems to do. It's not a lot, but smells terrible. Along with ...
2
votes
1answer
194 views

When looking at a transmission, how can I know if there is a LSD?

How can I know if there is an LSD installed on a transmission from a Dodge Neon 2003? For what indicators should I look for?.
7
votes
3answers
210 views

Switching gears without clutch

I drove manual car for a long time but never tried to switch gears without clutch. Question: given that clutch-less shift is executed properly, does it take a toll on transmission in any way? For ...
3
votes
1answer
845 views

Sluggish Acceleration, Minor Surging

I have a 2000 Infiniti i30 with 160K miles that is in fantastic shape. I purchased it from a mechanic who had gotten it from a customer who basically ended up not wanting it. The mechanic replaced the ...
2
votes
1answer
2k views

Altima Clutch and/or Transmission Problems

I have a 2005 Nissan Altima SE with a manual transmission. The clutch was completely replaced about 7k miles ago. I bought the car about 5k miles ago. At around 2-3k miles ago is when the problems ...
4
votes
1answer
76 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 ...
4
votes
2answers
4k 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 ...
1
vote
2answers
940 views

How much efficiency is robbed from 'pumping loss,' if any?

I'm specifically referring to the loss due to the pistons pulling air through a mostly closed throttle while cruising at highway speeds in a gasoline engine. To give an example, I've always wondered ...
5
votes
3answers
3k 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 ...
1
vote
2answers
285 views

Possible to diagnose broken transmission without starting engine?

While I know a little about cars, the bulk of my knowledge came from when I was a kid bolting on stuff to my Honda and racing it illegally. (So, not much.) My '96 Civic DX (5-speed) recently passed ...
8
votes
2answers
5k views

Manual transmission at stop: 1st with clutch in, or neutral with clutch out? -OR- Throwout Bearing wear

When sitting in traffic or at a long red light, is the Best Practice to have the car in 1st gear with your foot on the clutch, or in neutral with your foot off the clutch? Some say that you should be ...
5
votes
1answer
2k 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 ...
1
vote
1answer
204 views

Toyota Camry 2000: Odd Coughing when starts

Recently, I notice that my car begins coughing couple minutes after it starts. It have happened since Jan, 2012. First, I thought it might be due to Winter since it is cold weather. However, it ...
0
votes
3answers
2k views

How to reduce engine drag

Reading this question - Is engine braking harmful? - reminds me of a question I have always wanted to ask. I used to own a Prius. When the Prius is cruising at low speed at a slight downward slope, ...
1
vote
2answers
147 views

Can anyone identify the problem?

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 ...
4
votes
3answers
4k 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 ...
1
vote
1answer
280 views

97 Bonneville, strange problems accelerating

I'll try to explain this problem as clearly as possible. I have a 97 Bonneville, automatic transmission. When accelerating from idle, sometimes two strange things happen: the car reaches ~20 mph, ...
1
vote
1answer
659 views

1990 Acura Integra LS manual transmission clutch replacement

I'm trying to replace the clutch in my manual transmission 1990 Acura Integra LS (5 speed, 4-cylinder). In the course of doing this, I need to remove the transmission which is connected to the shift ...
2
votes
2answers
104 views

CV Joint Overhaul - is it worth it?

I have problems with one of my CV joints on my 1993 Acura. I read the repair manual and they suggest that actually fixing the joint itself is a pain and that most people should just buy a new axle ...
1
vote
1answer
925 views

How do I change the CV Joints on my 2003 Acura TL?

How do I change the CV Joints on my 2003 Acura TL? My 2003 Acura TL 3.2 has been making creaking sounds when I turn around corners and I've been told that old, noisy CV joints are likely the culprit. ...
13
votes
4answers
3k views

Is downshifting on hills harmful for non-trucks? [duplicate]

Possible Duplicate: Does Downshifting (Engine Braking) Cause Extra Wear and Tear? Since the days of taking drivers ed (many years back). I was told that when you encounter a steep or ...
1
vote
1answer
164 views

Car shifts hard when warm

My car, 2003 Toyota Camry shifts hard when warm. Fliud level is normal, mileage is 100k. I cannot spend too much time on it, just want to try some inexspensive tests, to understand what could be the ...
3
votes
1answer
446 views

Which is it; transmission,clutch, or slave cylinder

I have a problem with my 92 Geo Prizm 5 speed manual transmission. I could use some advice from someone knowledgeable about manual transmissions. Here are the symptoms: DURING cranking, in ...
3
votes
3answers
2k views

Alternative reverse light switch

I am about to take me ute to get a "safety" certificate so that I can get it registered (QLD, Australia) and I have one issue left that is still a possible problem. The switch that operates the ...
1
vote
1answer
94 views

Cost to alter the transmission system

How expensive would it be to replace a manual transmission system to an automatic?
2
votes
2answers
4k views

turning right causing small vibration and noise

My 2004 Ford Focus makes small grinding and vibrating noises when turning to the right. The problem was much more severe earlier this month. I took it to the shop and had them get me new tires and an ...
5
votes
3answers
1k 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 ...
1
vote
1answer
654 views

My automatic Honda Accord will only go past 30-40 mph in D3…How big is this problem?

So I just bought a Honda Accord for a 1,000. Basically the only drive gear that works is my D3. The 1st, 2nd, and D4 gears won't let the car go past 30-40 mph. Is this a serious problem?? What has to ...
2
votes
1answer
109 views

How do the cycles of the engine get converted into cycles of the wheels?

Is it the transmission that converts the high rpm of the engine into the lower rpm of the wheels rotation? Let's say that an engine was running at 500 rpm (this refers to the rpm of the crankshaft, ...
2
votes
1answer
537 views

2006 Toyota Corolla Jerks while coasting

I have a 2006 Toyota Corolla with roughly 65k miles. Problem I'm experiencing is that every now and then she will give a couple of jerks while coasting along. Most of the time the car is traveling ...
1
vote
1answer
1k views

reverse lights always on

I have an older 1993 Mitsubishi Triton ute. The issue is that the reverse lights are always on while the car is running regardless of gear position. The gearbox works, that is to say that the car ...
4
votes
3answers
1k views

Is Redline Lightweight Shockproof appropriate for an aging 2004 Subaru Impreza manual gearbox?

I have an aging (but wonderful) 2004 Subaru Impreza WRX with a manual gearbox. For some time, I have noticed that the synchros have begun to feel worn with the stock dealer-issue oil. Shifts are ...
5
votes
2answers
481 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 ...
2
votes
2answers
702 views

unusual noise when switching into the second gear - other gears are fine

Almost every time I switch into the second gear, a quite loud crackle sound is heard shortly. It only happens when switching into the second gear, other gears are fine. I depress the clutch fully of ...
2
votes
1answer
326 views

1989 Mazda 626 - Shifter is loose, what's wrong?

I have an 89 Mazda 626 LX. The shifter is really lose even when it's in gear. It shifts fine, no slipping or anything, but when it's in gear I can move it back and forth as if it was in neutral. ...