R 3500 P/U 2WD V8-350 5.7L (1989)
17.
Use silicon sealant or equivalent to cover stop screw hole.
18.
Install air cleaner, adapter and gasket.
CONTROLLED IDLE SPEED (UNDER 8500 GVW)
Transmission
Gear
Idle Speed
IAC Counts [1]
OPEN/CLOSED LOOP [2]
Man.
N
600
5-30
OL
Auto
D
500
5-30
OL
[1] Add 2 counts for engines with less than 500 miles. Add 2 counts for every 1000 ft. above sea level.
[2] Let engine idle until proper fuel control status is reached (OPEN/CLOSED LOOP).
MINIMUM IDLE AIR RATE
Transmission
Gear
Engine Speed
OPEN/CLOSED LOOP [1]
Man.
N
500 +/- 25
OL
Auto.
D
425 +/- 25
OL
CONTROLLED IDLE SPEED (OVER 8500 GVW)
Transmission
Gear
Idle Speed
IAC Counts [1]
OPEN/CLOSED LOOP [2]
Man.
N
650
5-30
OL
Man. [3]
N
600
5-30
OL
Auto
D
550
5-30
OL
[1] Add 2 counts for engines with less than 500 miles. Add 2 counts for every 1000 ft. above sea level.
[2] Let engine idle until proper fuel control status is reached (OPEN/CLOSED LOOP).
[3] Suburban with a single catalytic converter.
MINIMUM IDLE AIR RATE
Transmission
Gear
Engine Speed
OPEN/CLOSED LOOP
Man.
N
550 +/- 25
CL
Auto.
D
450 +/- 25
CL
