Mitsubishi Outlander GS45X. Manual - part 781
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-57
At driving
Hesitation Sag
"Hesitation" is the delay in
response of the vehicle speed
(engine speed). This occurs
when the accelerator is
depressed in order to accelerate
from the speed at which the
vehicle is now traveling, or a
temporary drop in vehicle speed
(engine speed) during such
acceleration.
Serious hesitation is called
"sag".
Poor acceleration Poor acceleration is inability to obtain an acceleration corresponding to
the degree of throttle opening, even though acceleration is smooth. Also
the inability to reach maximum speed.
Stumble
Engine speed increase is
delayed when the accelerator
pedal is initially depressed for
acceleration.
Shock
The feeling of a comparatively large impact or vibration when the engine
is accelerated or decelerated.
Surge
This is slight acceleration and deceleration feel usually felt during
steady, light throttle cruise. Most notable under light loads.
Knocking
A sharp sound during driving, which sounds like a hammer striking the
cylinder walls. It makes poor driveability.
At stopped
Run on
("Dieseling")
The condition in which the engine continues to run after the ignition
switch is turned to the "LOCK" (OFF) position. Also called "dieseling".
ITEMS
SYMPTOM
AK700112
Vehicle
speed
Time
Normal
Hesitation
Initial
accele-
rator
pedal
depre-
ssion
AB
Sag
AK700113
Vehicle
speed
Time
Normal
Stumble
Initial
accele-
rator
pedal
depre-
ssion
AB
Idling