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 MANUALSCHEVROLET1994LUMINA V6-204 3.4L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORSERVICE AND REPAIR
1994 Chevrolet Lumina V6-204 3.4L DOHC
Throttle Position Sensor: Service and Repair
1994 Chevrolet Lumina V6-204 3.4L DOHCSECTION Service and Repair
Upper Manifold Assembly - Exploded View:
REMOVAL:
1. Disconnect the electrical connector from the TPS.
2. Remove the TPS attaching screws.
3. Remove the TPS.
4. Remove the throttle shaft cover.
CAUTION: The TPS is an electrical component and must not be soaked in any liquid cleaner or solvent, as damage may result.
INSTALLATION:
1. With the throttle valve closed, install the throttle shaft cover, position the TPS on the throttle shaft, then align both the TPS and throttle shaft cover with the mounting holes.
NOTE: The hardware used to attach the throttle position sensor is factory coated with a thread-locking adhesive. If the TPS is removed for service, inspect the attaching screw threads for thread-locking material. If there is not enough thread-locking material (adhesive or compound) on the threads to ensure proper re-locking, clean the screw threads and apply Loctite 262 or equivalent to the screw threads before reassembly.
2. Install the TPS attaching screws and tighten to 2.0 Nm (18 lb.in).
3. Connect the TPS electrical connector.
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.