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.
2002 Ford Excursion 2WD V10-6.8LFACTORY OEM SERVICE PROCEDURE
Absolute Pressure Sensor: Description and Operation
Thermal Manifold Absolute Pressure Sensor
The Thermal Manifold Absolute Pressure Sensor (TMAP) (Figure 40) consists of a Manifold Absolute Pressure (MAP) sensor and an integrated thermistor. The thermistor part of the sensor is currently not being used. The MAP part of the sensor measures intake manifold air absolute pressure. The PCM uses information from the MAP sensor, Throttle Position (TP) sensor, mass air flow (MAF) sensor, engine coolant temperature (ECT) or cylinder head temperature (CHT) sensor and crankshaft position (CKP) sensor to determine how much exhaust gas is introduced into the intake manifold.
Thermal Manifold Absolute Pressure (TMAP) Sensor:
The Thermal Manifold Absolute Pressure Sensor (TMAP) (Figure 40) consists of a Manifold Absolute Pressure (MAP) sensor and an integrated thermistor. The thermistor part of the sensor is currently not being used. The MAP part of the sensor measures intake manifold air absolute pressure. The PCM uses information from the MAP sensor, Throttle Position (TP) sensor, mass air flow (MAF) sensor, engine coolant temperature (ECT) or cylinder head temperature (CHT) sensor and crankshaft position (CKP) sensor to determine how much exhaust gas is introduced into the intake manifold.
Factory Service Tools
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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.
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