GMC S Series 1994, Repair Manual

Page: 573 / 919

Tighten
N O T IC E : R e f e r to
"
N o t i c e ” o n p a g e 6 C 1 -1 .
*
Thread-mounted IAC valve assembly to 18 N-m (13
lbs. ft.) with 32-mm (1 1/4-inch) wrench.
► Flange-mounted attaching screw assemblies to 3
N-m (28 lbs. in.).
IDLE SPEED CONTROL (ISC)
ACTUATOR ASSEMBLY
(7.4L ENGINE ONLY)
+4-
Install or Connect (Figure 2)
1. ISC actuator assembly on the throttle body.
2. Two ISC actuator assembly attaching screws, coat­
ed with Loctite 262 (P/N 10522624), or equivalent.
• Screws to 8 N-m (71 lbs. in.).
Important
The ISC actuator nose screw must be adjusted after
installation. Refer to the “TBI 220 On-Vehicle Service”
section of the Driveability, Emissions, and Electrical
Diagnosis Manual for the proper model vehicle.
SPECIFICATIONS
FASTENER T IG H TE N IN G SPECIFICATIO NS
Fastener N-m Lbs. Ft.
Flange-Mounted IAC to Throttle Body Screw................................................... 3.2 —
Fuel Inlet Nut to Fuel Meter B o d y..................................................................... 40 30
Fuel Meter Body to Throttle Body S crew ......................................................... 4 —
Fuel Meter Cover to Fuel Meter Body Screws................................................. 3 —
Fuel Outlet Nut to Fuel Meter Body................................................................... 29 21
Thread-Mounted IAC to Throttle B ody............................................................... 18 13
Throttle Position Sensor to Throttle Body S crew ............................................. 2 —
ISC Actuator Assembly Attaching Screw.................................................. ........ 8 —
Lbs. In.
28
35
2b
18
71
T2528
SPECIAL TOOLS