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 MANUALSCHEVROLET1998METRO L4-079 1.3L VIN 2 MFIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORSERVICE AND REPAIR
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFI
Throttle Position Sensor: Service and Repair
1998 Chevrolet Metro L4-079 1.3L VIN 2 MFISECTION Service and Repair
Removal Procedure
1. Remove the one bolt from the air inlet duct resonator (silencer) to the air intake box (plenum).
2. Loosen the hose clamp on the air inlet duct resonator (silencer) pipe and swing out of the way.
3. Disconnect the throttle position (TP) sensor electrical connector.
4. Remove the two screws and the TP sensor from the throttle body.
Installation Procedure
1. Align the TP sensor (3) to the throttle body with the TP sensor's upper screw hole (1) slightly ahead of the hole on the throttle body (2). This will properly engage the throttle lever tab with the TP sensor movement.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Rotate the TP sensor (1) rearward in order to align the screw holes and install the two screws.
Tighten
Tighten the two TP sensor screws to 2.0 N.m (18 lb in).
3. Connect the TP sensor electrical connector.
4. Attach the air inlet duct resonator (silencer) pipe to the air intake box (plenum) and secure with one bolt.
5. Tighten the air inlet duct resonator (silencer) hose clamp.
1. Remove the one bolt from the air inlet duct resonator (silencer) to the air intake box (plenum).
2. Loosen the hose clamp on the air inlet duct resonator (silencer) pipe and swing out of the way.
3. Disconnect the throttle position (TP) sensor electrical connector.
4. Remove the two screws and the TP sensor from the throttle body.
Installation Procedure
1. Align the TP sensor (3) to the throttle body with the TP sensor's upper screw hole (1) slightly ahead of the hole on the throttle body (2). This will properly engage the throttle lever tab with the TP sensor movement.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Rotate the TP sensor (1) rearward in order to align the screw holes and install the two screws.
Tighten
Tighten the two TP sensor screws to 2.0 N.m (18 lb in).
3. Connect the TP sensor electrical connector.
4. Attach the air inlet duct resonator (silencer) pipe to the air intake box (plenum) and secure with one bolt.
5. Tighten the air inlet duct resonator (silencer) hose clamp.
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.