Basic Idle Speed Adjustment - Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement

13B-66
Ignition timing adjust-
ment connector (brown)
Jumper wire
MPI –
On-vehicle Service

BASIC IDLE SPEED ADJUSTMENT

NOTE
(1) The standard idling speed has been adjusted, by the speed
adjusting screw (SAS), by the manufacturer, and there
should usually be no need for readjustment.
(2) If the adjustment has been changed by mistake, the idle
speed may become too high or the idle speed may drop
too low when loads from components such as the A/C
are placed on the engine. If this occurs, adjust by the
following procedure.
(3) The adjustment, if made, should be made after first
confirming that the spark plugs, the injectors, the idle speed
control servo, the compression pressure, etc., are all
normal.
1. Before inspection and adjustment, set the vehicle to the
pre-inspection condition.
2. Connect the MUT-II to the diagnosis connector (16-pin).
NOTE
When the MUT-II is connected, the diagnosis control
terminal should be earthed.
3. Remove the waterproof female connector from the ignition
timing adjustment connector.
4. Use a jumper wire to earth the ignition timing adjustment
terminal.
5. Start the engine and run at idle.
6. Check the idle speed.
Standard value: 750
NOTE
(1) The engine speed may be 20 to 100 r/min lower than
indicated
approximately 500 km or less], but no adjustment is
necessary.
(2) If the engine stalls or the engine speed is low even
though the vehicle has been driven approximately 500
km or more, it is probable that deposits are adhered
to the throttle valve, so clean it. (Refer to P.13B-65.)
7. If not within the standard value range, turn the speed
adjusting screw (SAS) to make the necessary adjustment.
8. Switch OFF the ignition switch.
9. Disconnect the jumper wire from the ignition timing
adjustment terminal and return the connector to its original
condition.
10. Disconnect the MUT-II.
11. Start the engine again and let it run at idle speed for
about 10 minutes; check that the idling condition is normal.
50 r/min
above for a new
13100180508
vehicle [driven