What are the Symptoms of a Bad or Failing Throttle Body

The throttle body forms part of the system that controls air intake. Air is necessary for fuel combustion, but it should be allowed in the right proportion. The amount of air that comes in is controlled by the accelerator. The harder you press it, the larger the amount of air allowed.

This means, if your throttle body fails, you'll have problems accelerating. The signs that the throttle body has failed or is failing include:

1. Grime Buildup

Grime and dirt will build up in the throttle body's casing (this is referred to as coking) and interrupt the fuel-air flow. Air and fuel should mix in the right proportion and smoothly without interruption.

Apart from grime and dirt, carbon particles can also build upon the casing's surface, and they'll have a similar effect as dirt and grime.

2. Electrical Problems

Electrical components connected to the throttle body can get damaged. This will interrupt the transmission of information to the vehicle's computer. With poor electrical connectivity, you'll experience unpredictable electrical signals that can confuse you.

The throttle body will relay false information to the vehicle's computer. This is a serious issue because it will cause the fuel-air mixture not to be in the correct proportions.

3. High or Poor Idle

When the throttle body malfunctions, there will be very low or poor idle. The vehicle may stall when you want to stop it or experience low idle just after starting the vehicle

The vehicle may also stall if you press the throttle quickly. All these will cause the engine not to perform optimally.

4. Check engine light comes on

When there is a problem with the throttle body, the check engine light may come on. That doesn't mean when the lights come on, then it has to be about the throttle body.

The light can come on because of another problem with the engine. If it comes on, call a mechanic to diagnose the source of the problem.

5. Disruptions of Airflow from Throttle Stop or Vacuum Leaks

When there are any vacuum leaks, the fuel-air flow will be disrupted. This will cause pressure issues in the throttle body. When the throttle stop isn't adjusted well, a similar problem can arise: air and fuel will not be mixed in the correct proportion.

If you need throttle body repair, give our auto repair shop a call today!

Kamphaus Auto Care and Emissions is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call Kamphaus Auto Care and Emissions (630) 830-0400 if you have any issues in accessing any area of our website.