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 MANUALSCHEVROLET1992SUBURBAN 3/4 TON 2WD V8-454 7.4LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORSERVICE AND REPAIR
1992 Chevrolet Suburban 3/4 Ton 2WD V8-454 7.4L
Throttle Position Sensor: Service and Repair
1992 Chevrolet Suburban 3/4 Ton 2WD V8-454 7.4LSECTION Service and Repair
Throttle Position (TP) Sensor:
NOTE:
Since Throttle Position Sensor (TPS) configurations can be mounted interchangeably, be sure to order the correct one for your engine with identical part number of the one being replaced.
REMOVE OR DISCONNECT
- Electrical connectors.
- TPS attaching screw assemblies and retainer, (if applicable).
- TPS from throttle body assembly.
NOTE: The TPS is an electrical component and must not be soaked in any liquid cleaner or solvent, as damage may result.
INSTALL OR CONNECT
- With throttle valve in normally closed position, install TPS on throttle shaft with seal and rotate counter clockwise to align mounting hole.
- Two attaching screw assemblies. Tighten screw assemblies to 2.0 Nm (18.0 lb-in).
- Electrical connector to TPS.
- Check for TPS output as follows:
^ Connect an ALDL scanner to read TPS output voltage.
^ With ignition "ON" and engine stopped, TPS voltage should be less than 1.25 volts. If more than 1.25 volts, replace TPS.
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.