Protege LX L4-1489cc 1.5L DOHC MFI (1998)
4. Verify the idle speed with the following load conditions.
NOTE:
-
Excludes temporary idle speed drop just after the electrical loads are turned on.
5. If not as specified with all load condition, inspect the idle air control valve. If not as specified with some load condition, inspect related input
switches, harnesses and connectors.
IDLE MIXTURE
1. Perform "Preparation".
2. Verify that the idle speed and ignition timing are within the specification.
3. Insert an exhaust gas analyzer to the tailpipe.
4. Verify that the CO and HO concentrations are within the regulation.
5. If not, inspect the following.
a. On-board diagnostic system
b. Heated oxygen sensor
c. System inspection
1) Intake manifold vacuum
2) Fuel line pressure
3) Ignition timing control
6. If the systems are normal, replace the three way catalytic converter and/or the warm up three way catalytic converter.
