As the symptoms listed above make clear, failure of this component has serious safety implications and must be checked out immediately by a qualified mechanic. First remove the two screws on the circular clamps that hold the intake hose coming into the throttle body. Symptoms of a Dirty Throttle Body. If it is not adjustable, then it becomes mandatory that you check throttle stop and throttle cable adjustments. The throttle body allows air to speed up your car by sensing how much you are pressing on your gas pedal. 2. Below are the most common symptoms of a bad throttle position sensor. Throttle Position Sensors are manufactured using switch, potentiometer, and combination designs. Similar to dirt and grime, carbon deposits can create an uneven surface inside the walls of the throttle body which can disrupt the atomization of the air/fuel mixture. The throttle position sensor is key to getting the desired power and fuel efficiency from your vehicle in any driving situation. The throttle body gives you control over the speed of your vehicle. Truck revs at idleRough idle ford ranger This could be the solution to these problemsBad IAC valve Dirty throttle body/ IAC Valve Poor or high idle. When the throttle body is dirty, clogged up or malfunctioning this stops the flow of air into the engine, which not only causes problems with performance, but can cause issues with unburned fuel passing through the exhaust system. Bad throttle position sensor symptoms. Remove the throttle body and visually inspect it for residue. Uneven acceleration or slowed acceleration can be indications that your throttle body is dirty and needs to be cleaned. Symptoms of a Bad or Failing Throttle Body Dirt, grime, and carbon deposits on the inside of the housing. The largest component of the throttle body, which regulates the airflow, is the throttle plate. Dirt and grime can build up inside the housing, causing interruption in air/fuel flow. The throttle body itself is a tubular component of an air intake system which responds to the pressing of the gas pedal. Having previously cleaned the throttle body on my 1990 Dodge Dakota with good results, I simply bought the can of cleaner, exposed the throttle body, and cleaned away. What Are the Symptoms Of a Dirty Throttle Body? One of the first bad throttle position sensor symptoms is the Check Engine Light will flash on your dashboard to warn you when … The car began idling at 2500rpm after that. Address throttle position sensor problems as soon as possible to avoid risks of accidents and damaging your delicate engine.. Their improper functioning could cause symptoms such as poor ignition, inefficient throttle response, or … A dirty throttle body will exhibit many of the symptoms of a bad throttle body. Vacuum leaks or an incorrectly adjusted throttle stop. Most manufacturers recommend a throttle body cleaning process to be done after every 30,000 km. Electrical problems. Several symptoms indicate that your throttle body needs cleaning. Electrical problems Here’s a great video showing how to clean a throttle body. The throttle body is commonly situated between the intake manifold and air filter. Make sure that you use throttle body cleaner , and not brake parts cleaner, WD40, or even carb cleaner. Check Engine Warning Light. Before we get to know the symptoms, let us know what the throttle body is and why it is getting dirty.