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.
1986 Chevrolet Cavalier RS, 2D Hatchback, 2.8 W, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Body
- Disassembly of throttle body unit for immersion in cleaning solvent requires removal of TPS and IAC assembly. Throttle valve screws are staked in position and should not be removed. If necessary to remove TPS, continue as follows:
- Invert throttle body assembly and place on clean, flat surface. Remove and discard 2 TPS attaching screws, lock washers and retainers. Remove TPS from throttle body. See Figure .
- If necessary, remove screw holding TPS actuator lever to throttle shaft. Remove IAC assembly from throttle body. Remove and discard IAC gasket.
Factory Service Tools
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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.
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