Idle Speed: Adjustments

1. Start the engine and warm it up until the water temperature indicator points to the middle of the gauge.
2. Operate the engine at 2000 rpm for 2 minutes under no load.
3. Race the engine 2 or 3 times under no load, then check the idle speed.
Idle speed should be:
M/T 750 ± 100 rpm.
A/T 700 ± 100 rpm (in "D" position).
If not proceed to step 4.

Fig. 86 Auxilary Air Control Valve Connector:

4. Turn the engine off.
5. Disconnect the auxiliary air control valve connector (located on the R.H. side of the intake plenum).

Fig. 92 Throttle Sensor And Idle Switch:

6. Disconnect the idle switch connector (located on the throttle chamber).

Fig. 87 Idle Speed Adjusting Screw:

7. Start the engine and warm it up until the water temperature indicator points to the middle of the gauge.
8. Operate the engine at 2000 rpm for 2 minutes under no load.
9. Race the engine 2 or 3 times under no load then idle.
10. Turn the idle adjusting screw (located on the idle air adjusting unit) to obtain an idle speed of:
M/T 700 ± 50 rpm.
A/T 600 ± 50 rpm (in "D" position).
11. Turn the engine off.
12. Reconnect the auxiliary air control valve and idle switch connectors.