MPI <4G1> -
Troubleshooting
13A-48
INSPECTION PROCEDURE 11
When the engine is cold, it stalls at idling. (Die out)
Probable cause
In such cases as theabove, thecause is probably that the air/fuel mixture is inappropriate
when the engine is cold, or that the intake air volume is insufficient.
D
Malfunction of the ISC system
D
Malfunction of the throttle body
D
Malfunction of the injector system
D
Malfunction of the ignition system
Were the battery terminals disconnected?
Yes
After warming-up, let the engine run at idling for 10 minutes.
No
MUT-
II
Self-Diag code
Are diagnosis codes displayed?
Yes
Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS
CODES.
No
Does the engine stall right after the accelerator pedal is released?
Yes
Clean the throttle valve area. (Refer to P.13A-75*.)
No
Is engine-idling stable after the warming-up?
No
Check if the unstable idling (Rough idling, hunting).
(Refer to P.13A-45, INSPECTION PROCEDURE 8.)
Yes
Check the ISC servo for operation sound. (Refer to P.13A-88*.)
NG
Check the ISC system. (Refer to P.13A-36, INSPECTION PROCE-
DURE FOR DIAGNOSIS CODE P0505.)
OK
Check the injector for operation sound.
NG
Check the injector system. (Refer to P.13A-26, INSPECTION PRO-
CEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)
OK
MUT-
II
Data list
14 Throttle position sensor (Refer to P.13A-65.)
NG
Check the throttle position sensor system. (Refer to P.13A-16, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)
OK
MUT-
II
Data list
21 Engine coolant temperature sensor (Refer to P.13A-66.)
NG
Check the engine coolant temperature sensor system.
(Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS
CODE P0115.)
OK
Check the fuel pressure. (Refer to P.13A-78*.)
OK
Check the ignition timing.
(Refer to GROUP 11B - On-vehicle Service.)
NG
Check that the distributor is installed properly.
OK
Check the following items.
D
Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.)
D
Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.)
D
Check the engine oil viscosity.
OK
MUT-
II
Actuator test
10 EGR control solenoid valve (Refer to P.13A-70.)
NG
Check the EGR control solenoid valve system. (Refer to P.13A-32,
INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)
NOTE:
*: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).