Questions tagged [transmission]

These are questions regarding transmissions in general (either manual, automatic or CVT transaxles and their component parts). This tag is not for questions specific to any type of transmission. Instead, use [manual-transmission], [automatic-transmission], or [cvt-transmission] INSTEAD. Use this tag if the question is relevant to multiple types of transmissions.

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4
votes
1answer
2k views

Honda Accord Jerks when shifting gears and makes grinding sound?

I have a 99 Honda Accord 2dr 3.0L V6 automatic. When I drive this car it makes a whooooo sound coming somewhere from the engine, when I turn to the right it is intense and when I turn to the left it ...
3
votes
4answers
2k 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 ...
2
votes
1answer
4k views

Top Speed varies even when using the same bike

I own a Hero Honda CBZXtreme bike. The top speed that I have reached is 122Km/Hr. But I am not able to reach this speed always. Sometimes the speed does not even cross 105 Km/Hr while travelling on ...
1
vote
3answers
6k 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, ...
5
votes
2answers
1k views

Is my automatic transmission broken?

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 ...
1
vote
1answer
1k 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) ...
1
vote
1answer
692 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 ...
2
votes
1answer
987 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 ...
3
votes
3answers
158 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
357 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, ...
2
votes
3answers
4k views

1997 Olds 88, trans issue?

A friend of mine pointed me this way due to my current problems; I've been working on this for three weeks and am no closer to diagnosing the issue, so hopefully someone here can point me in the right ...
1
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1answer
2k 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. ...
9
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5answers
107k views

Shift “Grinding” Issue?

Lately I've been noticing a grinding/resisting force and sound when I shift from first to second gear in my 2003 Jetta GLI. It is ruining driving for me because every time I shift from first to second ...
1
vote
1answer
185 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 ...
32
votes
6answers
27k views

Why is a motorcycle's neutral between first and second gears?

The gear pattern is selected by clicking a lever with your left foot and is typically laid out as follows: 6th gear (if applicable) 5th gear 4th gear 3rd gear 2nd gear NEUTRAL 1st gear What is ...
6
votes
1answer
1k 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 Neutral,...
3
votes
1answer
7k views

Difficulty shifting into first gear on 1995 VW Golf

It has become very difficult to shift into 1st gear on my 1995 VW Golf. Pushing the shifter fully left and then forward now puts the transmission into 3rd. How can I fix this?
6
votes
5answers
8k 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 ...
7
votes
3answers
5k 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
1answer
4k 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 ...
2
votes
1answer
2k 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 ...
3
votes
1answer
129 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, ...
16
votes
4answers
10k 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 extended ...
2
votes
1answer
6k 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 ...
7
votes
4answers
8k 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 ...
3
votes
1answer
2k 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 ...
97
votes
17answers
240k views

Does Downshifting (Engine Braking) Cause Extra Wear and Tear?

Does the act of downshifting to slow your vehicle down have any negative side affects? I don't downshift more than one or two gears at a time and I let out on the clutch slow enough that I don't rev ...
12
votes
5answers
41k views

2003 Chevrolet Impala - Jerks after Stopping

I have a 2003 chevy impala. When I hit the gas (whether it be a light tap or hit it pretty hard), my car kind of waits a second, jerks and then takes off (revs go kinda high when it's waiting). To ...
8
votes
2answers
1k 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 ...
18
votes
4answers
75k views

Driving in second gear at 65+ mph

I accidentally drove my 2000 Grand Marquis on second gear on the highway. I was going 65 for like 5 minutes and tried to get it to 70mph but the car was shaking, when I realized I put it into regular ...
3
votes
1answer
1k 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 ...
6
votes
3answers
13k 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 ...
3
votes
1answer
610 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. ...
16
votes
2answers
73k views

Engine revs high 5th gear manual transmission

What might cause a car with a manual transmission that in 5th gear when given a punch of gas revs to very high rpms – with no power transferred to the wheels (i.e. the tachometer and speed go ...
9
votes
4answers
2k views

What problems may occur if clutch is not used?

I was curious about what problems may arise if clutch is not used when shifting gears. Are the problems similar for both cars and bikes?
29
votes
1answer
30k views

Why does the reverse gear in manual transmission cars sound different

When I got a manual transmission car (2003 Kia Rio) I noticed that it makes a winding sound in the reverse gear. Here is an example video that I found that demonstrates the sound. http://www.youtube....
7
votes
3answers
3k 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 ...