Mitsubishi Eclipse 1990 Service Manual page 579

INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptom
Communication with Communication with all systems is not possible.
scan tool is impossi-
Communication with ECM only is not possible.
ble.
Check The check engine/malfunction indicator lamp does not illuminate right after
function indicator the ignition switch is turned to the ON position.
lamp and related
The check engine/malfunction indicator lamp remains illuminated and never
parts
goes out.
Starting Cranks, won't start
Fires up and dies
Hard starting
Idling stability Unstable idle. (Rough idle, hunting)
[Improper idling)
dling stability Idle speed is high. (Improper idle speed)
idling)
Idle speed is low. (Improper idle speed)
dling stability When the engine is cold, it stalls at idle (Die out)
'Engine stalls)
When the engine becomes hot, it stalls at idle. (Die out)
The engine stalls when accelerating. (Pass out)
The engine stalls when decelerating.
Hesitation, sag or stumble
Acceleration shock
Deceleration shock
Poor acceleration
Surge
Knocking
high CO and HC concentration when idling
output voltage is low (approx.
test failed Transient mass emission tailpipe test failed
Purge flow test for evaporative canister failed
Pressure test for evaporative system failed
E N G I N E ( T U R B O )
AND ENGINE>
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