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11
votes
4answers
129 views

What would happen if you shifted into reverse while you are going forward?

First, I am talking about manual cars and I know this is considered impossible because of the synchronized gears, but lets suppose that you can manage to shift gears (For example you could shift into ...
3
votes
0answers
32 views

2003 Ford Focus 5 speed Stuck in Reverse [closed]

The shift lever is stuck in reverse and will not come out. I took out the shift tower to check the cable, and nothing appears to be missing or stuck. What could be causing this problem?
7
votes
1answer
69 views

Why am I not moving after starting car and shifting to Drive?

So I have had this issue for the last couple months where when I first start the car, shifting to Drive (automatic transmission) doesn't do anything. Pressing the gas only revs the engine, as if in ...
6
votes
0answers
61 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 ...
3
votes
2answers
64 views

Why after a certain RPM with the same gear selected the car no longer accelerates?

I have basic understanding of gearboxes and why we use them, but what is baffling me is that after about 4000 RPM (at least in my car) it doesn't accelerate further (or it does slowly)... This seems ...
5
votes
1answer
67 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 ...
4
votes
1answer
104 views

Is intentional kick-down bad for the engine?

I have a car with automatic gear (Mitsubishi 1600cc, if it matters) and sometimes when I want to gain speed quickly (e.g. when passing a slower car in a two-way road) I do a kick-down. I know it ...
3
votes
1answer
58 views

My car locks lower gears when on high speed, why?

When I'm on say 50 Km/h my first gear is not accesible and second gear is too, 3rd gear however is hard to push in but 4th gear is easy to slip in, why?
7
votes
1answer
95 views

Any possibility of engine stall if engine brake is active during gear shift?

My understanding: Engine brake uses engine friction to damp the vehicle momentum. If one wishes to apply engine brake to assist manual gearshift,(activate engine brake, rpm dies, shift to lower ...
6
votes
1answer
115 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
227 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 ...
0
votes
0answers
29 views

New alto clutch lasts not even a month with gear breakdown

A month ago I got my (78000 kilometer run)car serviced and the new clutch set was replaced. Within a month while applying reverse gear I got disconnected with gear and sent car for repair. Initially ...
6
votes
2answers
64 views

What is the best “automatic” gear to be in when going up a snowy incline?

My car is a Volvo S80, it's great in ground-level snow. I tried going up an incline in "D" and it wasn't having it, basically just slowed down and stopped dead in its tracks. I have never used the 3 ...
4
votes
1answer
44 views

Acceleration pickup of a car

When I say "Tata Winger can accelerate from 0 to 100 Kmph in nearly 19 to 20 seconds, which is quite good for this class" - how is it measured? Is this by accelerating the car from 0 to 100 kmph on a ...
1
vote
1answer
168 views

Changing gears at what speed? [closed]

Can someone please link me to a website where I can get the speed at which a car must shift gears, (manufacturer wise would be better). Or maybe, link to a website where I will be able to calculate ...
3
votes
1answer
63 views

What exactly is a gearbox?

You know that gear stick that we all use so much? Well, I know what it does in the sense that I know how to change gear and drive a car with a manual gearbox, but I don't know much more than that. ...
4
votes
2answers
117 views

Gear ratio from speed and rpm

http://stackoverflow.com/questions/30017271/obdii-determine-gear-given-speed-and-rpm Referring to the above link, one method to find the current gear ratio is to calculate Speed/rpm (The rpm is the ...
3
votes
1answer
64 views

Does putting vehicle in neutral at slope cause clutch plate spoilage?

I am having a Hero Honda Passion 2002 model motorcycle. I have a doubt regarding clutch and Neutral functionality. I have observed that most of the time in our city the roads have ups and down so ...
2
votes
1answer
47 views

I have a 2000 Suzuki Grand Vitara 5 Speed Ticking noise

I hear a ticking noise coming from the driver side rear end, possibly coming from the differential, not sure though because i checked out the pinion gear and i don't see any chips off any of the ...
4
votes
1answer
403 views

Why are most motorcycles 5 speed than 6 speed?

I have a Honda Trigger motorcycle. I have seen most of the motorcycles even like Karizma ZMR having 5 gears. What would be the reason to have just 5 gears even for 223 cc motorcycles?
0
votes
1answer
53 views

How to get in fourth gear

I have 2007 automatic Scion tC that I just bought and I was wondering how do I put it in 4th gear or (sport)?
2
votes
1answer
22 views

99 Jetta transmission trouble

My wife's 99 Jetta is very hard to get into 1st gear. 2 out of 3 times you will hit 3rd gear. She often has to start off from 2nd gear. Is there a way to adjust the linkage or something to allow more ...
3
votes
3answers
70 views

How to remove this gear from this pump and motor?

Actual story is both driven & driver gear teeths are warped up. I am trying to remove this gear coupling from the motor side using gear pulling device by applying load, but it still not coming: ...
3
votes
1answer
506 views

Occasional Crunch/Grinding noise when shifting into first gear at speed

When I am doing about 30-20mph, and am about to stop at a junction, where I know I will have to stop, I shift my car into first gear However, sometimes when I do this, it makes a quick gear grinding ...
3
votes
1answer
62 views

After long journeys, gear slips in 5th, but not into neutral

This is a follow up to another question I asked. I've managed to get some video of it happening this time. It started happening after travelling for about 2 hours. I was experiencing heavy traffic. ...
2
votes
2answers
825 views

Should starter pinion be greased?

When replacing a starter (or reinstalling the old one), should the pinion that that powers the flywheel (is that actually the flywheel?) be greased or not?
3
votes
2answers
9k views

Reverse Gear Doesn't Work Anymore on an Automatic

I've been having troubles with my automatic transmission for sometime now mainly it's lost it's smoothness and has been slipping first thing in the morning. I've practically worked on every other ...
3
votes
3answers
415 views

Safe engine braking in automatic cars

When I was learning to drive, I took my lessons in a manual car. On one of the lessons I was performing a reversing maneuver and I controlled the car on both the clutch and the brake pedal... which I ...
1
vote
1answer
283 views

Why my bike shows petrol missing before 2000 RPM in all gears?

I am using Hero Karizma R (225cc, 5 gears). Recently I feel a missing in all gear befor 2000 RPM. Sometimes my bike turn off due to this missing. Usually it happens at 1st/2nd gears. After 2000 RPM ...
4
votes
2answers
390 views

Synchromesh, Helical gear design

What specifically, is the design principle behind the Helical shape of gears in a synchromesh transmission? Are the Helical gear designed, in any known vehicle, to disengage? Is that why the gears ...
1
vote
1answer
253 views

What is the redline for different gears for Peugeot 107 2005 model?

I have a Peugeot 107 which is a 1 liter engine car. I was wondering what is the maximum safe speed at different gears? The car starts to make a lot of noise in 1st and 2nd gear, even at 10 mph at ...
2
votes
2answers
384 views

My motorbike handle gets a hit when I hit a bump or pothole

My 2 month old bike is a 200CC Bajaj Pulsar (made in india) with only 2000kms on the odometer. I have ridden it carefully. I touched 100km/h accidentally on a drag race with my friend, just one time, ...
2
votes
2answers
2k views

Ford Transit not going into 1st gear easily

With a lot of Googling I've found loads of different things that could be causing this - and none for a Ford Transit so I hope someone can explain exactly what is causing this problem, and from the ...
3
votes
1answer
220 views

Replacing 3rd gear synchro on a Tacoma

I have a 4WD 2007 Tacoma V6 manual with 6 speeds. This model has a notorious reoccurring problem with its 3rd gear, which is due to the synchro going bad on that gear, as per many online ...
0
votes
1answer
187 views

How to fix 2007 Dodge Ram Hemi Overdrive Problem

When my friend is going at least 70 MPH the overdrive doesn't work. And sometimes the overdrive doesn't work when he's going 40 MPH! What could I do to fix the problem. And I would like to avoid ...
10
votes
8answers
1k views

Is shifting to neutral on a decline more fuel efficient than keeping the gear engaged?

I always had the habit of shifting to neutral on long declines and using the brakes to slow down as needed. Intuition made me believe I'd be saving fuel as opposed to keeping a gear engaged. However, ...
2
votes
1answer
226 views

Car Hesitate Sometimes While Driving

I drive a Honda accord 2005 model v6. Sometimes while driving and I get to slow down or when going up a hill my car hesitates for a while ( small jerk ). What I mean is that, when I remove my leg ...
1
vote
1answer
1k views

Is it bad to switch gears to D while my car is still moving backwards

I am reversing. While the car is still moving backwards, I switch gears from R to D, and press the accelerator to start moving forward. After a bit the car stops going backward, and starts moving ...
5
votes
2answers
832 views

Why are gears designed in this pattern in motorcycles? [duplicate]

On motorcycles with manual transmissions, the shifting gears goes (down to up) like this: 1st Gear (all down) Neutral (half up) 2nd (full up) 3rd (so on) What is the logic behind this? Wouldn't ...
5
votes
2answers
7k views

Buzzing noise or whining noise from center of car while driving, not related to engine speed

My 2003 Passat B5 TDI with 6-speed gearbox is making a buzzing/whining(?) noise while driving and it appears as if it comes from under the gear shifter. The noise is: Dependent on road speed (more ...
4
votes
2answers
288 views

Name of inverter gear cog in English

One time, I had in my hand an object, part of a tractor gearbox, and i know its Portuguese name:"carreto inversor". The device has two cogs, one is the input and the other is the output. The function ...
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
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 ...
1
vote
0answers
276 views

BMW 320i 1992 Gearbox in Sports Mode [closed]

My cas is a BMW e36 320i, with an automatic gear box. The gearbox has three modes, Economic, Sports and ICE. When in Economic mode, The gearbox switches smoothly between the 5 speeds, however, the ...
1
vote
2answers
347 views

Suzuki Swift Sport 2012

My car (2yrs old) needs a new clutch after 45km and Suzuki won't cover it under waranty. I'm no mechanic but the car has not been driven hard and has mainly had longer highway journeys never. Is ...
3
votes
1answer
166 views

Transmission Gear Ratio Convention

I own a 2003 Mitsubishi Evolution, and I was looking at the transmission's gear ratio here: http://www.jackstransmissions.com/pages/evo-8-9-transmission-gear-ratios I can't tell if I'm ...
0
votes
1answer
760 views

manual transmission issue when changing 3rd gear with polo 3 1998

I'm currently driving a 1998 Polo 3 known 6n (1.0 petrol) and i have issue when changing my 3rd gear, especially when the car is cold. It pop out while i'm changing 3rd gear and other times it will be ...
2
votes
1answer
447 views

Why are gears still grinding after replacing transmission, clutch, and hydraulic cylinders?

Cavaliers are known for transmissions going bad, and my Cavalier's transmission was making a horrible grinding noise going into fifth. Double clutching seemed to be working until it started grinding ...
1
vote
2answers
81 views

Is it harmful to switch gears while starting?

I have a car with push to start. To use it, I have to push down the brake and press the button. However I've realized that occasionally I'll push the button and immediately switch to drive or ...
2
votes
4answers
879 views

Still safe to use a helmet when it's dropped?

I dropped my helmet from the seat of my motorcycle. Is it still safe to use it?