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 MANUALSFORD1986AEROSTAR V6-183 3.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR TEMPERATURE SENSOR ( AMBIENT / INTAKE )DESCRIPTION AND OPERATION
1986 Ford Aerostar V6-183 3.0L
Air Temperature Sensor ( Ambient / Intake ): Description and Operation
1986 Ford Aerostar V6-183 3.0LSECTION Description and Operation
The sensor provides the Electronic Fuel Injection System with mixture (fuel and air) temperature information The ACT is used both as a density corrector to air flow calculation and to proportion the cold enrichment fuel flow. This sensor is similar in construction to the Engine Coolant Temperature (ECT) sensor, except it is packaged to improve sensor response time.
The sensor is rigidly threaded into a cylinder runner of the intake manifold or attached to the air cleaner and provides the fuel strategy with mixture temperature information. The sensor input is used as a density corrector for air flow calculations and to proportion the cold enrichment fuel flow.
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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.