1976-78 Models
- Warm engine to normal operating temperature. Remove plugs at front exhaust pipes (one for each cylinder bank). Insert probe from Dual Probe Adapter (9995151) into each pipe.
- Connect tachometer and exhaust gas analyzer to vehicle. Disconnect and plug air hose at air pump. Disconnect and plug vacuum hose at EGR valve. Turn air conditioning off.
- Disconnect throttle link and cable at throttle pulley. Loosen lock nut and screw out throttle shaft adjusting screw. Turn screw in until it just touches boss, then turn screw one additional turn.
- Lock screw into place and check that throttle valve does not bind. Ensure that throttle control linkage, from pulley to lever ball, can be attached to lever ball without changing pulley position.
- Attach throttle cable to pulley. Adjust cable sheath so that cable is snug but does not change pulley position. Depress throttle completely, pulley should touch the full throttle boss.
- Adjust automatic transmission cable so that cable clip will travel 2" (51 mm) from idle position to full throttle position. At idle there should be 0.040" (1 mm) clearance between clip and adjusting sheath.
- On California models, connect test light to micro switch and turn ignition on. Place a 0.060" (1.5 mm) feeler gauge between throttle screw and boss. Test light should be on. Insert a.080" (2 mm) feeler gauge between throttle screw and boss. Test light should go out.
- If not, place the 0.060" (1.5 mm) feeler gauge between throttle screw and boss. Loosen lock nut and screw out micro switch adjusting screw until test light goes out.
- Turn adjusting screw in until a click is heard from micro switch and test light comes on. Tighten lock nut, disconnect test light, and remove feeler gauge.