Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement page 511

13B-30
INSPECTION PROCEDURE 11
When the engine is cold, it stalls at idling. (Die out)
In such cases as the above, the cause is probably that the air/fuel mixture is
inappropriate when the engine is cold, or that the intake air volume is insufficient.
Were the battery terminals disconnected?
MUT-II Self-Diag code
Are diagnosis codes displayed?
Does the engine stall right after the accelerator pedal is released?
Is engine-idling stable after the warming-up?
Check the ISC servo for operation sound. (Refer to P.13B-75.)
Check the injector for operation sound.
MUT-II Data list
14 Throttle position sensor (Refer to P.13B-48.)
MUT-II Data list
21 Engine coolant temperature sensor (Refer to P.13B-49.)
MUT-II Actuator test
10 EGR control solenoid valve (Refer to P.13B-52.)
Check the fuel pressure. (Refer to P.13B-67.)
Check the ignition timing.
(Refer to GROUP 11A – On-vehicle Service.)
Check the following items.
Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 – On-vehicle Service.)
Check the compression pressure. (Refer to GROUP 11A – On-vehicle Service.)
Check the engine oil viscosity.
MPI –
No
No
No
Yes
OK
OK
OK
OK
OK
OK
OK
Troubleshooting
Probable cause
Malfunction of the ISC servo system
Malfunction of the throttle body
Malfunction of the injector system
Malfunction of the ignition system
Yes
After warming-up, let the engine run at idling for 10 minutes.
Yes
Refer to P.13B-9, INSPECTION CHART FOR DIAGNOSIS
CODES.
Yes
Clean the throttle valve area. (Refer to P.13B-65.)
No
Check if the unstable idling (Rough idling, hunting).
(Refer to P.13B-27, INSPECTION PROCEDURE 8.)
NG
Check the ISC servo system.
(Refer to P.13B-46, INSPECTION PROCEDURE 32.)
NG
Check the injector system. (Refer to P.13B-17, INSPECTION PRO-
CEDURE FOR DIAGNOSIS CODE 41.)
NG
Check the throttle position sensor system. (Refer to P.13B-12,
INSPECTION PROCEDURE FOR DIAGNOSIS CODE 14.)
NG
Check the engine coolant temperature sensor system.
(Refer to P.13B-13, INSPECTION PROCEDURE FOR DIAGNO-
SIS CODE 21.)
NG
Check the EGR control solenoid valve system.
(Refer to P.13B-47, INSPECTION PROCEDURE 34.)
NG
Check that the distributor is installed properly.