Mercury Sable engine runs at 1500 RPM while driving, possible throttle position sensor issue on Mercury Sable

Some Mercury Sable owners report experiencing issues related to the throttle position sensor (TPS), which can cause the engine to run at 1500 RPM while driving. A faulty TPS may lead to an unresponsive throttle, resulting in higher than normal RPMs and increased fuel consumption due to inaccurate information being relayed to the engine control unit. Additionally, TPS problems can manifest as erratic engine behavior, including sluggish acceleration or sudden power surges. Furthermore, a malfunctioning TPS can contribute to gear shifting problems and hard-shifting issues in the automatic transmission. To address these symptoms, it is advisable for owners to have the TPS checked and potentially replaced.