Dade Manifold Absolute Barometric Pressure Map Sensor Replaces 213 796 8093594090 16187556 for Chevrolet Cadillac Buick Pontiac GMC

Important Notice: For Fitment, please check the compatibility OEM Part number before purchase. Part Number:  16187556 Cross-Reference Part Number: 881731 3861321 9359409 9359409 12614973 16249939 38613212 8093594090 8161875560 8162499390 213-1742 213-351 213-4434 213-796 861249A1 AS155 AS59 EC1636 PS10000 SU1078 The Manifold Absolute Pressure Sensor, also known as the MAP sensor, measures atmospheric pressure inside the intake manifold and sends a voltage signal to the Engine Control Module (ECM). As atmospheric pressure inside an intake manifold is negative during vehicle operation, the sensor is actually measuring vacuum. The ECM calculates proper air/fuel ratios, idle speeds and ignition spark timing based in part on the Manifold Absolute Pressure Sensor's signal. A malfunctioning or inoperative Manifold Absolute Pressure Sensor can cause drivability symptoms such as hard starting, stalling, harsh or poor transmission shift points, rough idle and hesitation. It can also cause the Check Engine Light (CEL), Service Engine Soon (SES) or Malfunction Indicator Lamp (MIL) to illuminate and can set a trouble code (P-code) in the ECM when not functioning correctly. Not correcting a failed Manifold Absolute Pressure Sensor condition can cause reduced fuel mileage and performance, increased emissions and damage to other components such as the catalytic converter.