Mitsubishi 3000GT 1991, Service Manual, Page: 137 / 1146

SERVICE ADJUSTMENT PROCEDURES
BASIC IDLE SPEED ADJUSTMENT
NOTE
(1) The basic idle speed has been factory-adjusted with the
speed adjusting screw (SAS) and does not normally require
adjustment.
(2) If the adjustment is required, first check that the ignition
plug, injector, servo, and compression pressure are
normal.
(1) Before starting the inspection and adjustment procedures,
set the vehicle in the following conditions:
l
Engine coolant temperature: 80 to 95°C (176 to 205°F)
l
Lights, electric cooling fan, accessories: OFF
l
Transaxle: Neutral range on vehicles with automatic
transaxle)
l
Steering wheel: Straightforward position
(2) When using the multi-use tester, connect it to the diagnosis
connector.
NOTE
The connection of the multi-use tester grounds the
diagnosis/data transmission selector terminal.
(3) When not using the multi-use tester, proceed as follows:
Insert a paper clip into the l-pin blue connector as
shown in the illustration.
FUEL SYSTEM
Service Adjustment
Connect a primary-voltage-detecting tachometer to the
paper clip.
NOTE
The should read of the actual engine
speed. This means that the actual engine speed is the
tachometer reading multiplied by 3.
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