Map Sensors

Map Sensors

Car Spares Factors carries a fully comprehensive range of map sensors. The MAP (Manifold Absolute pressure) sensor is a device that converts the inlet manifold pressure to an electrical signal for the ECU. The ECU uses this signal to determine engine load when calculating ignition and fueling requirements. There are basically two types of sensor, which have varying voltage signal (GM) or a varying frequency signal (Ford). In both cases testing is a simple matter of comparing vacuum readings to output voltage/signal. The output and hence the testing procedures depend upon the type of sensor. Vacuum supply, cracked, blocked or loose fitting vacuum pipes are the biggest failing with MAP sensors. All these can cause problems. The problem that is overlooked is poor engine condition; a worn engine will have a low vacuum. This translates to a rich mixture, check the engine condition and use a vacuum gauge.

 

Map Sensors