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 MANUALSCADILLAC1996ELDORADO V8-4.6L VIN 9REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR TEMPERATURE SENSOR ( AMBIENT / INTAKE )DESCRIPTION AND OPERATION
1996 Cadillac Eldorado V8-4.6L VIN 9
Air Temperature Sensor ( Ambient / Intake ): Description and Operation
1996 Cadillac Eldorado V8-4.6L VIN 9SECTION Description and Operation
Air Cleaner Housing With Intake Air Temperature Sensor:
DESCRIPTION
The Intake Air Temperature (IAT) sensor is a thermistor (a resistor which changes value based on temperature) mounted inside of the air cleaner housing and measures the air temperature entering the engine.
OPERATION
At cold air temperatures, the IAT sensor resistance is high and at hot air temperatures, the resistance of the sensor is low. The PCM supplies a 5 volt reference signal and a ground to the sensor and measures the voltage signal as it is changed by the sensor. The voltage is close to 5 volts at cold temperatures and close to zero volt at hot temperatures.
RENDER: 1.0x
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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.