Purpose, Affected Vehicles, Instructions & Operations Info
PURPOSEThis bulletin provides a detailed procedure for inspecting 2.0L 1984 and 1985 model Californiaspecification Cordia and Tredia vehicles to correct any emissions-control system tampering which may have occurred on these models. A letter has been sent to all owners of the affected vehicles telling them to return their vehicles to a Mitsubishi dealer to have the engine serviced. A copy of this letter is shown on page 10 of this bulletin.
Please note that the customer is not to be charged for the repairs covered by this bulletin. However, if other work is performed, for example replacement of an air filter or other parts or repairs requested by the customer, then these parts and repairs would require customer approval and payment.
To achieve the desired results, it is important that the procedure be followed EXACTLY as described in this bulletin.
AFFECTED VEHICLES
This procedure applies to 1984 and 1985 model California 2.0L Cordia and Tredia (non-turbo only) vehicles with manual and automatic transaxle without limitation as to mileage. It does not apply to any other models.
IMPORTANT DEALER INSTRUCTIONS
In an effort to obtain more compliance with this Service Campaign, the California Air Resources Board (CARB) and the California Department of Motor Vehicles (DMV) are beginning a new monitoring program. Before the vehicle can be registered, the DMV may require some owners of the affected vehicles to show proof that the repairs described in this bulletin have been performed. Therefore, it is important that the following statement be written clearly on the customer copy of the repair order.
"SERVICE CAMPAIGN TSB-88-14-001 HAS BEEN COMPLETED ON THIS VEHICLE"
Your careful attention to this matter will help to reduce possible customer dissatisfaction with this Service Campaign.
REQUIRED AND CONDITIONAL OPERATIONS
Below is a flow chart which shows a general description of the required and conditional operations in this bulletin.
Required Operations
The "required operations" must be performed on all Affected Vehicles as described on Page 1. These "required operations" are as follows:
1. Remove exhaust manifold heat protector. Check manifold ID number and for evidence of cracking. Reinstall heat protector.
2. Remove carburetor and install choke adjusting shim.
3. Remove and clean the sub-EGR valve.
4. Replace jet on jet mixture solenoid valve.
5. Replace the o-rings on jet mixture and deceleration solenoid valves. Reinstall carburetor.
6. Change ignition timing.
7. Check curb idle speed. Adjust as necessary.
8. Adjust sub-EGR valve if paint seal on screw is missing or broken.
9. Clean secondary main air jet and choke shaft with carburetor cleaner.
10. Affix modification label.
11. Remove, clean and reinstall air cleaner element.
Conditional Operations
The "conditional operations" are peformed only if there is a need for them-if inspection of the exhaust manifold reveals a crack or if the ID number cast into its upper surface indicates that replacement is necessary, the exhaust manifold should be replaced. In addition, if the MAS plug is missing or evidence of tampering is present, the idle CO should be checked and adjusted as necessary.
These "conditional operations" are as follows:
1. Replace exhaust manifold if cracked or if ID number indicates replacement.
2. If MAS plug is missing or evidence of tampering is present check idle CO and adjust as necessary.