Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSEAGLE1994SUMMIT WAGON AWD L4-1795CC 1.8L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR FLOW METER/SENSORDESCRIPTION AND OPERATION
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHC
Air Flow Meter/Sensor: Description and Operation
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHCSECTION Description and Operation
Air Flow Sensor Circuit:
Volume Air Flow Sensor Operation:
PURPOSE
The Air Flow Sensor (AFS) is a "Karman Vortex" type which measures the volume of air entering the intake manifold to provide the Engine Control Module (ECM) with precise intake volume information.
OPERATION
- The volume air flow sensor located in the air cleaner converts the engine intake air volume into a pulse signal with a frequency proportional to the air volume and inputs it to the engine control module which then computes the fuel injection rate etc. based on the input signal.
- The volume air flow sensor power is supplied from the multiport fuel injection relay to the volume air flow sensor and is grounded by the engine control module. The volume air flow sensor generates a pulse signal as it repeatedly connects and disconnects between the 5V voltage supplied from the engine control module and ground.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.