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 SYSTEMSTHROTTLE POSITION SENSORDESCRIPTION AND OPERATION
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHC
Throttle Position Sensor: Description and Operation
1994 Eagle Summit Wagon AWD L4-1795cc 1.8L SOHCSECTION Description and Operation
Throttle Position Sensor:
Throttle Position Sensor:
PURPOSE
The Engine Control Module (ECM) controls fuel injection based on the input signal from the Throttle Position Sensor (TPS).
OPERATION
- The ECM supplies a 5 volt reference and a ground for the sensor.
- As the throttle shaft rotates, the voltage drop across the TPS changes.
- As the throttle valve shaft rotates from the idle position to wide open position the resistance between the variable resistor terminal of the throttle position sensor and the ground terminal increases. As a result the voltage at the throttle position sensor variable resistance terminal also increases.
- The ECM determines the throttle valve opening based on the output voltage.
- The ECM computes throttle valve opening change (output voltage change) and judges the engine acceleration state and accordingly corrects fuel injection amount during acceleration.
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.