Wagoneer V8-360 5.9L VIN N 2-bbl (1983)
4,000 feet, the ignition timing as shown on the original Vehicle Emission Control Information label in the engine compartment, should be advanced 7~
and engine idle speed reset to the specifications indicated on this same label. In addition, the altitude circuit ground wire must be untaped from the MCU
harness in the engine compartment and connected to a ground screw on the engine.
1.
Remove the tape securing the black with tracer altitude circuit ground wire to the MCU harness.
2.
Attach the altitude circuit ground wire to the engine ground screw near the ignition coil.
NOTE:
The existing engine ground wires are also attached to this ground screw.
3.
Advance ignition timing 7~ from the setting indicated on the original Vehicle Emission Control Information label and reset engine idle speed to
the setting indicated on the same label.
4.
Install Vehicle Emission Control Information Update label, part number 89 83 100 009, next to the original label.
These adjustments apply to all 1983 six-cylinder and 2.46L four-cylinder Jeep models originally certified for principal use at altitudes below 4,000 feet.
Refer to the Vehicle Emission Control Information label in the engine compartment to identify these vehicles.
NOTE:
Whenever these vehicles are returned to operation at altitudes below 4,000 feet the ignition timing and engine idle speed must be reset to
original specifications, the altitude circuit ground wire must be disconnected and the Vehicle Emission Control Information Update label
removed.
On 1983 six-cylinder and 2.46L four-cylinder Jeep models originally certified for operation at altitudes above 4,000 feet that are being operated below
4,000 feet, the ignition timing as shown on the original Vehicle Emission Control Information label in the engine compartment should be retarded 7~ and
engine idle reset to the specification indicated on this same label. In addition, the altitude circuit ground wire must be disconnected and taped to the
MCU harness.
1.
Disconnect the black with tracer altitude circuit ground wire from the engine ground screw near the ignition coil. Tape the wire to the MCU
harness securely and be sure the wire eyelet is completely covered with tape.
2.
Retard ignition timing 7~ from the setting indicated on the original Vehicle Emission Control label and reset engine idle speed to the setting
indicated on this same label.
3.
Install Vehicle Emission Control Information Update label, part number 89 83 100 010, next to the original label.
These adjustments apply to all 1983 six-cylinder and 2.46L four-cylinder Jeep models that were originally certified for principal use at altitudes above
4,000 feet. Refer to the Vehicle Emission Control Information label in the engine compartment to identify these vehicles.
NOTE:
Whenever these vehicles are returned to operations at altitudes above 4,000 feet, the ignition timing and engine idle speed must be reset to
original specifications and the altitude circuit ground wire reconnected and the Vehicle Emission Control Information Update label removed.
3.
EIGHT-CYLINDER MODELS
On 1983 eight-cylinder Jeep models originally certified for operation at altitudes below 4,000 feet that are being operated above 4,000 feet, the ignition
timing, as shown on the Vehicle Emission Control Information label in the engine compartment, should be advanced 5~ and the engine idle speed reset
to the specification shown on the same label.
1.
Advance ignition timing 5~ from the setting indicated on the original Vehicle Emission Control Information label and reset engine idle speed
to the setting indicated on the same label.
2.
Install Vehicle Emission Control Information Update label, part number 89 83 100 009, next to the original label.
These adjustments apply to all 1983 eight-cylinder Jeep models that were originally certified for principal use at altitudes below 4,000 feet. Refer to the
Vehicle Emission Control Information label in the engine compartment to identify these vehicles.
NOTE:
Whenever these vehicles are returned to operation at altitudes below 4,000 feet, the ignition timing and engine idle speed must be reset to
original specifications and the Vehicle Emission Control Information Update label removed.
On 1983 eight-cylinder Jeep models originally certified for operation at altitudes above 4,000 feet that are being operated below 4,000 feet, the ignition
timing as shown on the Vehicle Emission Control Information label in the engine compartment, should be retarded 5~ and the engine idle speed reset to
the specifications shown on same label.
1.
Retard the ignition timing 5~ from the setting shown on the original Vehicle Emission Control Information label and reset engine idle speed
to the setting indicated on the same label.
2.
Install Vehicle Emission Control Information Update label, part number 89 83 100 010, next to the original label.
