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 MANUALSPONTIAC1985GRAND AM V6-181 3.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORSERVICE AND REPAIR
1985 Pontiac Grand AM V6-181 3.0L
Throttle Position Sensor: Service and Repair
1985 Pontiac Grand AM V6-181 3.0LSECTION Service and Repair
Fig. 339 Throttle position sensor:
1. Disconnect TPS electrical connector.
2. Remove two TPS attaching screws, lockwashers and retainers.
3. Remove TPS.
4. With throttle valve in normal closed idle position, install TPS. Ensure TPS pickup lever is located above tang on throttle actuator lever, Fig. 339.
5. Apply thread locking compound 1052624 or equivalent to screw threads, then install retainers, lockwashers and screws. On 4-110 (1.8L) and 4-122 (2.0L) Turbo models, tighten screws. On all other models, adjust TPS as outlined.
RENDER: 1.0x
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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.