Emission Control Systems Troubleshooting - Mitsubishi 1989-1993 GALANT Service Manual

EMISSION CONTROL SYSTEMS - Troubleshooting
TROUBLESHOOTING
Symptom
Engine will not start or hard
to start
Rough idle or engine stalls
Probable cause
Vacuum hose disconnected or
damaged
The EGR valve is not closed.
Malfunction of the evaporative
emission purge solenoid
The EGR valve is not closed.
Vacuum hose disconnected or damaged
Malfunction of the positive crankcase
ventilation valve
Malfunction of the purge control system
Malfunction of the exhaust gas
recirculation system
Positive crankcase ventilation line
clogged
Malfunction of the exhaust gas
recirculation system
TSB Revision
Remedy
Repair or replace
Repair or replace
Repair or replace
Repair or replace
Repair or replace
Replace
Check the system; if there is a
problem, check its component parts.
Check the system; if there is a
problem, check its component parts.
Check positive crankcase ventilation
system
Check the system; if there is a problem,
check its component parts.