Recall - Emission Control System Inspection/Repair: Overview
NO.: EMR-90-008DATE: May, 1990
MODEL: 1986 Truck/Montero
SUBJECT:
1986 CALIFORNIA 2.6L TRUCK AND MONTERO EMISSION RECALL
PURPOSE
This bulletin provides a detailed procedure for inspection and repair of the emission control system on certain 1986 2.6L California Gasoline Emission Specification Trucks and Monteros. A letter has been sent to all owners of the affected vehicles telling them to return their vehicles to their Mitsubishi Motors dealer to have the engine serviced. A copy of this letter is shown in this bulletin.
Please note that the customer is not to be charged for the repairs covered by this bulletin. To achieve the desired results, these procedures MUST be followed EXACTLY as described in this bulletin.
IMPORTANT NOTICE
All dealerships MUST perform all steps as described in this bulletin. Incomplete repairs will lead to emissions-non-compliance and obvious customer dissatisfaction. The California Air Resources Board ("CARB") may survey the results of this campaign several months after starting. If incomplete repairs or non compliance is found, another recall could be ordered or other action undertaken by CARB. Confirm that you are using the proper Technical Service Bulletin repair procedures and service kits for the vehicle model year and engine size that you are working on. Service procedures and kits are different even though some vehicles may look alike.
AFFECTED VEHICLES
These procedures apply to 1986 California 2.6L Gasoline Emission Specification Truck and Montero models with manual or automatic transmission without limitation to mileage. It does not apply to any other models.
REQUIRED OPERATIONS
In this bulletin is a flow chart which shows the general descriptions of the required operations.
These "REQUIRED OPERATIONS" are as follows:
1. Clean the Carburetor.
2. Test the Carburetor Feedback System. Replace the Oxygen Sensor, Jet Mixture Solenoid Valve, and the Front Catalytic Converter as needed.
3. Remove the exhaust manifold heat protector. Check the exhaust manifold and heat protector for evidence of exhaust leakage. Replace the exhaust manifold if leakage is evident. Reinstall the exhaust manifold heat protector.
4. Remove the carburetor and install a choke shim.
5. Remove and clean the Sub-EGR Valve.
6. Adjust the Fast Idle Speed Screw.
7. Remove and clean the EGR Valve.
8. Modify and reroute vacuum hoses.
9. Install an intermediate wiring harness assembly at the ECU.
10. Affix the Service Label.
11. Complete and affix "EMISSION RECALL COMPLETED" label.