Mitsubishi Eclipse 1990 Service Manual page 593

INSPECTION PROCEDURE 17
[Comment]
Malfunction of the system is suspected.
Are diagnostic trouble codes output
Check the idle air control motor for operation sound
Engine (Refer to
Check the idle air control motor for operation sound
Engine>. (Refer to
SCAN TOOL Data list
14 Throttle position sensor (Refer to
OK
SCAN TOOL Data list
26 Closed throttle position switch (Refer to
Clean the throttle valve area. (Refer to
INSPECTION PROCEDURE 18
Poor acceleration
[Comment]
Defective ignition system, abnormal air-fuel ratio, poor compression pressure, etc. are
SCAN TOOL DTC
Are diagnostic trouble codes output
Check the injectors for op
(Refer to
OK
Check the ignition timing.
(Refer to GROUP A On-vehicle Service.)
Check the ignition timing.
(Refer to GROUP On-vehicle Service.)
OK
Scan tool: Inspection when hesitation.
acceleration occur. (Refer to
PROCEDURE 42.)
OK
Check the fuel pressure. (Refer to
OK
Check the following items.
Check the ignition coil, spark plugs, spark plug cables.
Check supercharging pressure.
Check intake charge pressure control system.
Check rotating resistance of turbocharger turbine wheel. (Does the wheel rotate smoothly?)
Check the compression pressure.
Check the fuel filter or fuel
Broken air intake hose
Clogged air cleaner
Clogged exhaust system
ENGINE (TURBO)
AND ENGINE>
YES
NG
YES
NG
Engine (Turbo)>
Engine>
stumble or poor
INSPECTION
I
for clogging.
Revision
Troubleshooting
Probable cause
Malfunction of the
Refer to INSPECTION
TROUBLE CODES.
Check the idle control system malfunction (Refer to
INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE
Check the throttle position circuit malfunction (Refer to
PROCEDURE FOR DIAGNOSTIC TROUBLE
20.)
Check closed position switch system.
(Refer to INSPECTION PROCEDURE FOR DIAGNOSTIC
TROUBLE CODE
Probable cause
Malfunction of the Ignition system
Malfunction of air-fuel ratio control
Malfunction of the fuel supply system
Poor acceleration
C l o g g e d e x h a u s t s y s t e m
Malfunction 'of turbocharger system
Refer to INSPECTION CHART FOR DIAGNOSTIC
TROUBLE CODES.
PROCEDURE FOR DIAGNOSTIC TROUBLE
Check that the crankshaft position sensor and timing belt cover are
installed
I
system
FOR DIAGNOSTIC
,
.
. .
I
.