Audi Throttle Body

Common Signs of Throttle Body Fault in Your Audi with Fix from Experts in Tempe

by admin October 4, 2020

Like all modern internal combustion engine vehicles, Audi models include a throttle body in the engine system. If your Audi is misbehaving, you could have a problem with your throttle body. It’s often a simple fix, but make sure you bring it to the experts at McIlvain Motors to correctly diagnose the issue.

The Function of a Throttle Body

Your Audi delivers great driving performance because its engine receives the perfect mix of air and fuel, which it burns to generate power. The throttle body controls the airflow.

The largest part of the throttle body, the throttle plate, is a circular metal plate that opens and closes to allow more or less air into the combustion chamber. When you press the accelerator, the vehicle’s computer constantly communicates with the fuel injection system and the throttle body, telling it exactly how much fuel and air the engine needs to produce the power you’re calling for.

Throttle Body Failure Warning Signs

If you notice one or more of these symptoms, you may have an issue with your throttle body system, and it’s time to bring it in for diagnostics and repair.

Check engine light

Very often, when an Audi’s throttle body is malfunctioning, the vehicle’s check engine light will come on. Our expert technicians can read the fault codes stored in the computer to diagnose the exact issue.

Rough idle

Throttle body problems often cause the vehicle to jerk and struggle while idling. The RPMs may spike before the vehicle finds its proper idle speed. You might notice a low idle, sometimes even stalling while stopping. You may also experience a very high idle, because the throttle is allowing too much air.

Limp mode

A fault in the throttle body, usually an electrical problem in the system, can cause your Audi to enter “limp mode.” This reduces the vehicle’s power output to protect the engine systems until you can get the problem fixed.

Causes of Throttle Body Symptoms

There are several possible reasons you could experience the symptoms of throttle body failure, and it’s important that an expert mechanic identifies the root cause of your problem.

Carbon buildup

Over time, carbon deposits from your engine build up on the throttle plate and in the throttle body. This grime buildup turns a normally smooth surface into a rough one, disrupting the precision engineering of the throttle system. In the worst cases it can cause the throttle plate to stick. If you clean the throttle body regularly or have our mechanics do it when you bring us your Audi for scheduled maintenance, you can prevent this from becoming a major problem.

Vacuum leak

A leak in your Audi’s air intake system can create several problems. The engine isn’t getting the same amount of air that the vehicle’s computer thinks it should. Also, the amount of airflow is unsteady, disrupting the precise efficiency of the throttle system.

Throttle stop

The throttle stop governs the maximum and minimum open positions of the throttle body. If its calibration is incorrect or forgotten, which sometimes happens when the car battery is disconnected or replaced, the throttle won’t allow the correct amount of air into the engine.

Sensors and cables

The throttle body includes a number of sensors to detect parameters like temperature and throttle position, along with cables to connect them to the vehicle’s computer. The computer often interprets sensor failure as a problem with the throttle body itself, causing performance to suffer. During routine maintenance our mechanics can often spot damaged cables and failing sensors and replace them before they cause problems with your Audi.

McIlvain Motors is Here to Help

If you are experiencing problems with your Audi that may be associated with the throttle body and you’re in the Chandler, Mesa, Phoenix, Scottsdale, or Tempe AZ areas, come see the expert technicians at McIlvain Motors.

The throttle body is an Audi Mechanic Cleaning Throttle Body integral part of the precision engineered Audi motor, and your vehicle’s performance can suffer if it’s not working properly. We will run diagnostics to pinpoint the problem, and from there it’s often an easy fix for our expert technicians. And if you keep up with scheduled maintenance, we can find and solve many of these issues before they become problems for you.

We look forward to working with you in the future for all your Audi’s needs. Call us today to make an appointment.