Daewoo Nubira User Manual page 578

Step
9
1. Repair or replace any ignition system compo-
nents as needed.
2. Perform an emission test.
Does the vehicle pass the emission test?
10
1. Inspect for vacuum leaks.
2. Inspect the catalytic converter for contamina-
tion.
3. Inspect for carbon buildup on the throttle body
and the throttle plate and inside the engine.
Remove with a top engine cleaner.
4. Check the Exhaust Gas Recirculation (EGR)
valve to make sure it opens.
5. Check for proper Positive Crankcase Ventila-
tion (PCV) operation.
Are all checks and needed repairs complete?
An engine continues to run after the ignition switch
is turned OFF.
Step
1 Were the Important Preliminary Checks performed?
2 Does the engine run smoothly after the ignition
switch is turned OFF?
3
1. Check the ignition switch and the ignition
switch adjustment.
2. Replace the ignition switch if needed.
Is the repair complete?
4
1. Check the evaporative emission system.
2. Check for leaking fuel injectors.
3. Check the Idle Air Control (IAC) valve opera-
tion.
4. Inspect for vacuum leaks.
5. Check for the proper base idle setting.
Are all checks and repairs complete?
DAEWOO V–121 BL4
Action
DIESELING, RUN–ON
Action
ENGINE CONTROLS 1F – 375
Value(s) Yes
System OK
System OK
Value(s) Yes
Go toStep 2
Go toStep 3
System OK
System OK
No
No
Go to"Impor-
tant Preliminary
Checks"
Go toStep 4