405 L4-1905cc 1.9L (1989)
Idle Speed: Adjustments
Idle Adjustments
Idle Speed Adjustment
Be sure the following conditions are met before attempting to adjust the idle.
a. The engine must at normal operating temperature.
b. The ignition system is in good operating condition.
c. The air filter is in good condition and is in place.
d. The cooling fans are off.
e. The A/C compressor is off.
f.
The automatic transmission is in N or P.
g. The engine is in good mechanical operating condition.
1.
Connect a scope or suitable tachometer.
Idle Speed Adjustment Screw
2.
Turn the adjusting screw #1 to obtain 850 +/- 50 RPM.
NOTE: If unable to obtain 850 +/- 50 RPM see "Throttle Plate and Switch Adjustments".
Throttle Plate and Switch Adjustment
Throttle Plate Adjustment
1.
With the ignition switch in the off position disconnect the accelerator cable.