Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 410

INSPECTION PROCEDURE 9
When the engine is cold, it stalls at idling. (Die out)
The cause is probably an incorrect air/fuel ratio or poor intake air amount when the
engine is cold.
Have the battery terminals been disconnected recently?
MUT-II Self-Diag code
Is a diagnosis code displayed?
Is the engine idling correct after the engine has been warmed up?
MUT-II Data list
22 Crank angle sensor (Refer to P.13A-76.)
Check idling speed when the engine is cold.
MUT-II Data list
26 Accelerator pedal position switch (Refer to P.13A-76.)
MUT-II Data list
21 Engine coolant temperature sensor (Refer to P.13A-76.)
MUT-II Data list
68 EGR valve (Refer to P.13A-78.)
Does the engine stall immediately after the accelerator pedal is
released?
Measure fuel high pressure between the fuel pump (high pressure)
and injector. (Refer to P.13A-98.)
Check ignition timing. (Refer to GROUP 11A – Engine Adjustment.)
Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.
Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.
(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.
Check all the following items:
Spark plugs
Compression pressure
Engine oil viscosity
Check trouble symptoms.
GDI –
No
No
No
OK
OK
OK
OK
No
OK
OK
OK
OK
Troubleshooting
Probable cause
Malfunction of the electronic-control throttle valve
system
Malfunction of the throttle body
Yes
Warm up the engine, and then let it run at idle for approx. ten
minutes.
Yes
(Refer to P.13A-13, INSPECTION CHART FOR DIAGNOSIS
CODES.)
Yes
Refer to "Unstable idling (rough idle, hunting)." (Refer to P.13A-48,
INSPECTION PROCEDURE 7.)
NG
Check the throttle valve position feedback system. (Refer to
P.13A-36, INSPECTION PROCEDURE FOR DIAGNOSIS CODE
92.)
NG
Check the accelerator position switch. (Refer to P.13A-67, INSPEC-
TION PROCEDURE 28.)
NG
Check the engine coolant temperature sensor. (Refer to P.13A-18,
INSPECTION PROCEDURE FOR DIAGNOSIS CODE 21.)
NG
Check the EGR valve system. (Refer to P.13A-70, INSPECTION
PROCEDURE 31.)
Yes
Clean around the throttle valve. (Refer to P.13A-96.)
NG
Repair
NG
Check that the crank angle sensor and timing belt cover are properly
installed.
NG
Replace the ignition coil.
NG
Replace the injector.
13A-51