Gearbox

What is a Gearbox?

The manual gearbox takes the engine rotational torque and passes it through varying arrangements of gears (cogs) that convert it to a different output speed that turns the driven axle(s). Without gearboxes cars would be practically useless and the output of the combustion engine would always directly correspond to the speed of the wheels.

Most manual gearboxes have 5 or 6 forward gears and one reverse gear. The gear ratios are different depending on the type of car and the engine characteristics, performance cars can have longer gearing so that cars can get to 80+mph in second gear, whereas small town cars will have much shorter ratios.

Manual gearboxes take a lot of stress and quite often drivers with poor gear changing technique can put extra strains on the components of the gearbox. Poorly maintained gearboxes can suffer from worn out components and seize up, so its important that a gearbox is maintained correctly and the oil level is maintained.

What problems can be caused by a faulty Gearbox?

Gearbox makes whining sound

Gearbox temperature warning light showing on dashboard

Gear changes are difficult

Gearbox makes grinding sound

How much does it cost to replace the Gearbox?

Replacement manual gearboxes can cost thousands when bought from the manufacturer. Generally you won't buy a brand new gearbox for an older car that is out of warranty, it makes a lot more sense to buy a refurbished unit, these an cost from £400 for a car like a Ford Focus.

1259 problems that mention the Gearbox

Showing the latest 10, see more problems here

1
response

Gear lever staying in place..

Need a bullet shaped spring loaded pin that holds the gear lever when selected in place.. any sellers ? Not buying a whole gearbox… have photos ..

2002 Citroen C5 2.0td
Posted: May 14, 2022

1
response

Shift lock appears to be faulty intermittently but gear box works fine , shifts correctly etc

Sometimes the gear selector will not move from park, the dashboard indicator ( P,R,D,321 ) does not show what gear its in. The gearbox works correctly all the time, shifts smoothly and kick down is in...

2010 Suzuki Splash 1.2 GLS+ Automatic
Posted: May 12, 2022

1
response

Gearbox problems

Here's the content from the problem you were reading Hey I have this problem with my auto gearbox V6 engine. When accelerating the revs climb but the speed doesn't, sometimes there is a clunk and it k...

2006 Peugeot 407 HDi Auto Saloon
Posted: May 12, 2022

1
response

Grinding noise when turning left on Fiat Panda Cross (Brakes have all been stripped)

A grinding sound has started over the last 1,000 miles (Car has now done 85,000 Miles 1 owner) , noise is more noticeable when turning left. I have had it in a friendly garage who stripped all brakes ...

2015 Fiat Panda RHD 0.9 Cross
Posted: May 11, 2022

1
response

Skipping 2nd and 4th gears

Auto DSG gearbox. Revs high in first gear and then skips into 3rd gear and then into 5th. So skips 2 and 4. Also will nlt go into reverse unless I turn the car off and then on again?

2012 Volkswagen Caddy Maxi
Posted: May 7, 2022

1
response

Gearbox changing down

On the highway the gear drops by one and the speed dropped below the engine revolution level and the auto sign shows on the dashboard. However if I restart the problem goes temporarily. Whenever I sto...

2002 Renault Scenic fidji dci auto
Posted: May 7, 2022

2
responses

Clutch pedal stays half way fown

Clutch pedal stays half way depressed , and operates lower dow,but it can be brought back to normal position when you flip it back with your foot. It then operates normally. No fluid loss.n

2013 Skoda Fabia 1.6 TDI elegance
Posted: May 4, 2022

1
response

Gear Box Noise

I have just had the car serviced. Now, on deceleration, I get a noise for several seconds like someone poking a piece of cardboard into the spokes of a bicycle wheel. It does not matter what gear I ...

2015 Fiat Panda POP 1.2 8V
Posted: May 4, 2022

1
response

Check the gear box

when i accelerate the car and broken the 80 k/h then I hear the knocked up from gearbox and the RPM not acceleration more than 2.5 rpm then when i stop the car and restart the engin will caneled evry ...

2006 Renault Scenic 1.6
Posted: May 3, 2022

1
response

Gearbox fault on dash

Car was running fine, parked at my daughters for 2 minutes and when I started the engine again is stated a fault with releasing parking brake then changed to gearbox fault and wouldn't move. Tried ag...

2013 Citroen DS4 1.6
Posted: May 1, 2022

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