Idle-Up RPM

Check that idle speed is set to specification. Operate air conditioner on "MAX COLD". Verify fast idle control diaphragm is activated and idle speed increases to specified RPM. If idle-up RPM is incorrect, adjust by turning fast idle control diaphragm adjusting screw. See Fig 1 .

IDLE-UP RPM SPECIFICATIONS

Application	Auto. Trans.	Man. Trans.
1.5L	980	850

Fig 1: Carburetor Adjustment Locations

Courtesy of GENERAL MOTORS CORP.

IDLE SPEED SPECIFICATIONS

Application

Idle RPM

1.5L

⁽¹⁾ 750-850

⁽¹⁾	Manifold vacuum should be 17.7-21.5 in. Hg with transmission in Neutral.