23060 Granatelli Mass Air Flow Sensor
An intake flow sensor comprises a sensor main body and a connection unit main body, the former consisting of a main passage for passing intake a and a bypass passage for bypassing part of the flowing through the main passage and joining it again to the a of the main passage. An intake flow meter is disposed in the bypass passage to measure the intake air quantity. The bypass passage has an opening which opens to the main passage. A ring is fitted into the main passage of the sensor main body in such a manner as to close part of the opening of the bypass passage. An insulator is clamped by the ring and the connection unit main body. According to this construction, the area of the opening of the bypass passage to the main passage is not changed due to deformation of an insulator when the insulator is interposed between the sensor main body and the connection main body and they are fixed together by bolts. The air flow sensor works in conjunction with the oxygen sensor and the engine control system. While the oxygen sensor determines the oxygen levels in the exhaust system, the air flow sensor is used to monitor the amount of air passing through the engine while running. A vehicles air flow sensor delivers a signal to the ECM (engine control module). It is usually difficult to detect when a mass air flow sensor fails. The "check engine light" or engine symbol will probably not be illuminated. Your car, truck or SUV may have a poor idle quality, stall, low power or all three. Your PCM may have no trouble codes because the ECM cannot detect a problem .
- What has occurred is the sensing element or "hot wire" that is used to give electronic feedback to the ECM for processing has become contaminated by air partials.
- The air flow sensor is reporting to the ECM that less air is running through the engine than actually is.
- Paint
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