Idle Up Control Valve: Adjustments

Fig. 19 Throttle opener system. 1982-86 models except 1982 Champ & Colt (federal) w/1400cc engine & manual transaxle:

1. Start engine and allow to reach normal operating temperature.
2. Ensure that all electrical accessories are "Off," then position transmission in "Neutral."
3. Set curb idle to specifications.
4. With air conditioning system "Off," disconnect vacuum hose from throttle opener nipple, then apply 20 inches Hg vacuum to throttle opener with a suitable vacuum pump.
5. Adjust engine speed with throttle opener setting screw, Fig. 19, to the following specifications:
a. On Champ & Colt (1600cc engine), set engine speed to 900 ± 50 RPM for automatic transaxle equipped vehicles, or 850 ± 50 RPM for manual transaxle equipped vehicles.
b. On Challenger & Sapporo, set engine speed to 900 ± 50 RPM.