Q: Have a 91 Lincoln town car and it stalls when I put in park and while driving.

This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, making turns (which makes use of the power steering pressure switch) turning on AC or engaging the brakes). The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses this information to adjust ignition timing and fuel enrichment. When the engine is working hard, intake vacuum drops as the throttle opens wide. The engine takes in more air, which requires more fuel to keep the air/fuel ratio in balance. When the computer reads a heavy load signal from the地图传感器，它将燃油混合物调节比正常情况稍丰富，因此发动机可以产生更多的功率。然后，计算机将稍微延迟（退缩）点火正时，以防止爆炸，从而损坏发动机并降低性能。这也可能是由其他密切相关的组件引起的，例如脏或失败的质量空气流传感器，一个故障的油门位置传感器或潜在的真空泄漏。我建议您让您的机电专家来您的位置诊断和检查您的车辆。万博体育入口