What is a throttle cable?

The throttle cable connects the accelerator pedal to the throttle body. When you press the accelerator, a valve on the throttle body opens to allow a mixture of air and fuel into the engine intake. When the pedal is released, the stream of air and fuel stops.
Without a working throttle cable, you will not be able to get your accelerator pedal to communicate with your engine.
Take note that newer cars with drive-by-wire systems will not have a throttle control cable.

When do I need to replace my throttle cable?

Your throttle cable may freeze up due to weather, worn cables, poor lubrication, or getting caught in some other mechanism.
This can cause the throttle cable to seize up, which in turn causes your engine to race. This can lead to a dangerous situation for the driver and damage your engine.
The throttle can also become unresponsive, meaning you won’t be able to move your car by pressing down on the pedal.
If this describes your situation or if the accelerator seems to stick when you press the pedal, bring the car in to a mechanic to see if a throttle cable replacement is needed.

How to replace a throttle cable

To replace the throttle cable, the mechanic will need to get under the hood of your car. Then, they will:
  • Disconnect the throttle cable from the throttle lever and accelerator, then remove it from the firewall
  • Remove the old cable and install a new one
  • Put the new cable through the firewall then connect it to the accelerator and throttle lever
The mechanic will finish up by testing all the components to ensure they are working.

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