Chevrolet Aveo throttle position sensor issue causing loss of acceleration and speed limit of 5mph on Chevrolet Aveo

Some Chevrolet Aveo owners report experiencing issues with the throttle position sensor (TPS), which can lead to a significant loss of acceleration and limit the vehicle's speed to as low as 5 mph. These owners note that a malfunctioning TPS may result in poor fuel economy and transmit incorrect data to the electronic control module (ECM), causing performance problems such as rough idling, stalling, and erratic throttle response. Symptoms of a faulty TPS often include an illuminated check engine light and sudden drops in engine power. Driving with a defective TPS is discouraged, as it can adversely affect engine performance. To diagnose the issue, some owners find that testing with a multimeter is necessary, and resolving a TPS problem typically requires replacing the sensor, with costs ranging from $150 to $400. Prompt attention to TPS issues is essential for maintaining proper engine performance and ensuring safety on the road.