Accelerator Pedal

What is a Accelerator Pedal?

The accelerator pedal is the right most pedal in the driver's foot well and is responsible for regulating the engine throttle control. The position of the pedal represents the 'openess' of the throttle, a fully raised pedal will be a closed throttle position whereas a fully depressed pedal will correspond to a wide open throttle position. The wider the throttle position the more air and fuel flow into the engine, the more air and fuel the more power and acceleration.

On older cars the accelerator pedal would have been connected to a cable that connects the pedal directly to the throttle body. Modern cars use a 'drive by wire' system that essentially transmits the pedal position as a digital signal to the ecu, the ecu then manages the throttle position. This allows for more safety systems to come into play as the ecu has ultimate control over the throttle rather than the driver.

Accelerator pedals can have problems mechanically and also with the sensor. There is added complexity for automatic cars as the pedal will also have a 'kick down' feature that tells the ecu to apply as much throttle as the engine can handle.

What problems can be caused by a faulty Accelerator Pedal?

Accelerator pedal sticks down

Accelerator pedal moves around more than it should

Car not accelerating normally

Car acceleration or performance is not as strong as normal

Automatic Gearbox sticking

How much does it cost to replace the Accelerator Pedal?

Accelerator pedals will generally cost from £75 to £150 for the parts to replace.

119 problems that mention the Accelerator Pedal

Showing the latest 10, see more problems here

1
response

There is a squeak when the accelerator is blipped

On starting t h e car there is a squeak . The squeak is there when the accelerator is blipped any ideas what it can be

2018 Vauxhall Crossland X Ecotec diesel
Posted: Jun 22, 2022

2
responses

Auto gearbox - possibly!

Engaging reverse , from a stop position. Change to "drive"... at the initial depression of the accelerator pedal sometimes the car makes a small "churring " noise - for maybe a second, thereafter the ...

2020 Hyundai i10 1.4 premium
Posted: May 8, 2022

1
response

Throttle not working

Press the pedal and nothing happens

2002 Vauxhall Combo 1.7
Posted: Apr 30, 2022

8
responses

Car will not start but battery ok can not rev over 4500 rpm tic tic noise from engin

Car will not start but battery ok can not rev over 4500 rpm tic tic noise from engine will start with jump or buster pack Then car will start most of the day but nothing after 6 hrs of engine off the ...

2013 Ford Fiesta 1.0
Posted: Apr 17, 2022

11
responses

It wouldn't start this morning battery was flat

Eventually got the car going but no power on the accelerator

2005 Vauxhall Tigra 14
Posted: Apr 13, 2022

1
response

Electrical fault light, and no throttle response

The vehicle revs at around 2500rpm, but no effect from throttle. It restarts if switched off and restarted, but when engine gets very hot it goes back to fault almost immediately. The car can travel...

2005 Renault Kangoo 1.6 Auto petrol
Posted: Apr 12, 2022

1
response

Unresponsive accelerator

When depressing the accelerator the pedal seems to have little to no resistance at times and can go right to the floor before a delayed reaction kicks in, this appears to be sporadic at present but wi...

2017 Skoda Octavia SKODA Octavia 1.4 TSI SE L 5dr DSG Automatic
Posted: Apr 7, 2022

1
response

Cuts out when stopping.

When eco turned on, my car cuts put when coming to a stop, when I take my foot off the brake and touch the accelerator, this is accompanied by a short whine, I then have to pit it into neutral and .re...

2012 Peugeot 3008 Semi auto with flappy paddles
Posted: Mar 30, 2022

9
responses

Engine stalled; starter will not turn over engine; waited 10 minutes and started turned over engine, engine started but stopped after drive engaged

No problem with car for several years; today engine stalled at 8:00 pm, lights on; rolled to edge of road; turned key fully anticlockwise and then clockwise to restart engine, heard click of relay but...

2004 Mercedes Benz A Class 190 petrol automatic
Posted: Feb 27, 2022

5
responses

I have a new C3 from August 2021 with only 6300 km

When I drive in the car for more than 15 minutes a warning sign indicating there's a gearbox problm comes on the screen while the stop sign appears together with a plyer sign The gearbox is working p...

2021 Citroen C3 Regular benzine
Posted: Feb 8, 2022

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