Fuel System (Dohc) Service Adjustment Procedures; Curb Idle Speed Inspection (Dohc); Basic Idle Speed Adjustment (Dohc) - Mitsubishi 1989-1993 GALANT Service Manual

FUEL SYSTEM <DOHC> - Service Adjustment Procedures
I
BASIC IDLE SPEED ADJUSTMENT
2. Use the following procedure to adjust when the idling
3. The adjustment, if made, should be made after first con-
TSB Revision
SERVICE ADJUSTMENT PROCEDURES
CURB IDLE SPEED INSPECTION
inspection.
Engine coolant temperature: 85-95°C (185-205°F)
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Lights, electric cooling fan and accessories: OFF
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Transaxle: Neutral (P for vehicles with an automatic
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transaxle)
(2) Connect a tachometer.
NOTE
tion of a tachometer.
2. For tachometer, one-half of the actual engine rpm is
indicated, so the actual engine rpm in two times the
indicated value shown by the tachometer. <From 1990
models>
(3) Set a timing light in position.
(4) Ground the terminal for adjustment of ignition timing.
(5) Start the engine and let it idle.
(6) Check whether or not the ignition timing is the standard
value; if not, adjust.
Standard value: 5"BTDC f 2"
(7) Stop grounding the terminal for adjustment of ignition
timing.
(8) Let the engine idle for two minutes.
(9) Check the idling rpm.
Curb idle speed: 75Ok 100 rpm <Non-Turbo>
NOTE
The idling rpm is automatically regulated by the idle air
system.
CHART CLASSIFIED BY PROBLEM SYMPTOMS and
check the MFI component.
NOTE
1. The standard idling speed has been adjusted, by the en-
gine speed adjusting screw (RPM adjusting screw), by the
manufacturer, and there should usually be no need for
readjustment.
speed drops due to an incorrect adjustment, high idling
speed, or when a load such as the air conditioning is ap-
on the engine.
plied
firming that the spark plugs, the injectors, the idle air con-
trol motor, the compression pressure, etc. are all normal.
13-245
CHECK