1990 MITSUBISHI SPYDER Service Repair Manual

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Page 457 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE Troubleshooting
[Comment]
Background
lThe fuel level sensor, which is installed in the fuel tank, informs the PCM of fuel level(amount).lThe PCM does not carry out a

Page 458 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual E N G I N E
Scan tool 154
C o d e G e n e r a l s c a n t o o l T e m p e r a t u r e S e n s o r
No.Voltage Too High
44
[Comment]
Backgroundl Battery temperature sensor l PCM

Page 459 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ,
-- Scan tool 156,I
C o d e G e n e r a l s c a n t o o l D o w n s t r e a m to
No. G r o u n d
21
[Comment]l Downstream heated oxygen Backgroundl harness and connectors lWhen

Page 460 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (NON-TURBO)>
Scan tool 160
Code General scan tool EVAP Leak Monitor
No.Detected
31
[Comment]
Background
l The PCM monitors that the fuel tank, purge lines, e tc. are

ENGINE (NON-TURBO)>
Scan tool 160
Code General scan tool EVAP Leak Monitor
No.Detected
31
[Comment]
Background
l The PCM monitors that the fuel tank, purge lines, e tc. are well.
l
ventilation solenoid with the canister ventilation valve (incorporated in the lIf the fuel tank and purge lines are sealed the pressure will rise well by the solenoid specific timeslAfter the pressure rises well, the diaphragm inside the solenoid will not work any more.lIf the purge air leaks slightly, the solenoid will be activated more than specific times.
Range of Check, Set Condition
l The solenoid has been activated more than specific times.
‘ P r o b a b l e
I,
l Fuel tank cap screwed on l tank and purge lines, l Evaporative emission failed
l
l PCM failed’
NGCheck the evaporative Replace
(Refer to GROUP Emission Control System.)
OK
Check the evaporative emission purge solenoid.NG Replace
(Refer to GROUP 17 Emission Control System.)
OK
Check the fuel tank and purge line for leakage.
Scan tool 161
Code General scan tool EVAP Leak Monitor Large Leak
No. Detected
TSB Revision
[Comment]
l The PCM monitors that the fuel tank, purge lines, e tc. are well.
l
ventilation with the canister ventilation valve (incorporated in the solenoid) lIf the fuel tank and purge lines are sealed correct ly, the pressure will well by the solenoid specific times.lAfter the pressure rises well, the diaphragm inside the solenoid will not work any more.lIf the purge air leaks excessively, the solenoid should be activated much more than specific
times.
of Check. Set Condition
l been activated much more than specific times.
Probable cause
l Fuel tank filler cap screwed on lFuel tank and purge seated
l Evaporative solenoid
failed
l
l PCM ,
Check the evaporative emission ventilation solenoid .
(Refer to GROUP 17 Emission Control System.) Replace
NGCheck the evaporative emission purge solenoid. Replace
(Refer to GROUP 17 Emission Control System.)
OK
Check the fuel tank and line for I

Page 461 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (NON-TURBO)>
Scan tool 183
Code General scan tool Evaporative Emission
No.tion Solenoid Circuit
31
[Comment]l Open or short control drcuitBackgroundl Open fused ignition

Page 462 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual E N G I N E ( N O N - T U R B O ) > .
Scan tool 184. .
C o d e G e n e r a l s c a n t o o l E v a p o r a t i v e E m i s s i o n V e n t i l a-
No.tion Switch or Mechanica

Page 463 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (NON-TURBO)> Troubleshooting’
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptom
Communication with all systems is not possible.1tion with scan,
tool is
Communication wi

Page 464 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual I E N G I N E
PROBLEM SYMPTOMS TABLE (FOR YOUR
ItemsSymptom
StartingWon’tThe starter is used to crank the engine, but there is no combustion
within the cylinders, and the eng

I E N G I N E
PROBLEM SYMPTOMS TABLE (FOR YOUR
ItemsSymptom
StartingWon’tThe starter is used to crank the engine, but there is no combustion
within the cylinders, and the engine
Fires up and diesThere is combustion within the cylinders, but then the
stalls..
Engine starts after cranking a while.Hard starting
Idling
stability
HuntingEngine speed doesn’t constant; idle.
Usually, a judgement can be
upon the of
tachometer pointer, and the vibration transmitted to the
wheel, shift lever, body, etc. This is rough idle.
Rough idle
The engine doesn’t idle at the usual correct Speed. ”
The engine stalls when the foot is taken ‘from
pedal,
regardless of whether
vehicle is moving or not.
Incorrect idle speed
Engine stall (Die out)
The engine stalls when the accelerator pedal is dep ressed
is being used.
Engine stall (Pass out)
Hesitation“Hesitation” is the delay in response of the vehicle speed (engine
speed) that occurs
accelerator is depressed in order to
accelerate from the speed at which the vehicle is
temporary drop in vehicle speed (engine speed)
Serious hesitation is called “sag”. (Refer to 1)
Poor acceleration is inability to obtain an
to the degree of throttle opening, even though acce leration is smooth,
the inability to reach maximum speed.
acceleration
Engine speed increase is delayed when the pedal is
depressed for acceleration. (Refer to Fig. 2)
feeling of a comparatively large impact or when the
is accelerated or decelerated.,
is acceleration and deceleration feel usually at steady,
hrottle cruise. Most notable under light loads.
sharp sound like a hammer striking the cylinder wa lls during driving
which adversely affects driving.
condition in which the engine continues to run after the ignition
is turned to OFF. Also called “Dieseling”.
on
Fig.1Hesitation
Hesitation
Vehicle
speed
Fig. 2
Vehicle
speedNormal
Idling Stumble
ITimeTime
I Revision

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