This is a more serious symptom of a bad throttle body and usually appears in the later stage of the problem. No need to say how dangerous it is to drive around like this. When you notice this, take action as soon as possible. You’ll feel a brief but uncomfortable hesitation when pressing the gas pedal.Īt moments, it will seem as the gas pedal isn’t connected to the throttle body at all.Īs the problem progresses, the engine stalling becomes worse. When you press the gas pedal, instead of getting the usual instantaneous response, you’ll get a sluggish one.Īnother easy way of recognizing this symptom is when starting from a standstill. The difference is that in lower revs it might be barely noticeable while at higher revs there might be more drastic manifestations. The engine doesn’t run as smoothly as it should regardless of the rev count. One more very obvious symptom of a bad throttle body. When the situation gets worse, the engine may want to cut off completely.īesides this, the engine may occasionally run on higher revs.Īt first, these symptoms will be barely noticeable while in the later stages they will be present all the time. Instead of smooth idling when you start the engine, it will idle poorly and in a rough manner.

This is perhaps the symptom you’ll notice first. If you’re interested in a more in-depth explanation provided by Wikipedia, click here.ġ0 SYMPTOMS OF A BAD THROTTLE BODY 1.

The common location of the throttle body is after the air filter housing and tubes, mounted on the air intake manifold. This is mostly found on older type cars but is perhaps somewhat more durable and simple to maintain. In this case, the gas pedal is connected to the throttle body with a metal cable. The other option is if the throttle body is mechanical, so to say. The connection between the electric motor on the throttle body and the gas pedal is with wires. This means they have a small electric motor on them that moves the butterfly valve when you press the accelerator pedal. Modern throttle bodies are almost all electronic. When you press the accelerator pedal, the metal plate inside (aka the butterfly valve) moves and lets more air inside. It is essentially a big valve that regulates the airflow into the intake manifold and engine. The throttle body is a part of the air intake system. Before we start mentioning the symptoms of a bad throttle body, a brief explanation about this car part would perhaps be useful.

Symptoms of dirty throttle body