Cherokee 2WD L4-126 2.1L DSL Turbo VIN B FI (1986)
3.
Connect the idle/decel switch to the carburetor spark port as follows (Fig. 2).
a.
Cut and install tee connector, 321 0891, in vacuum line 1 (Fig. 2). Position the connector about 1-1/4 inches from the spark port end of the
line.
b.
Disconnect vacuum line line 2 from tee connector 3. Then reconnect line 2 to the tee connector just installed in vacuum line 1 (Fig. 2).
c.
Plug open end of tee connector 3 with cap 813 2325.
4.
Retard ignition timing 7~ from the setting specified on the original Vehicle Emission Control Information label and reset idle speed to the setting
on the same label.
5.
Install Vehicle Emission Control Information Update label, EF 8980 000 819, next to the original label.
These adjustments apply to 1986 AMC/Jeep, 49-State/California/Canada 4.2L models with manual transmission originally sold for use at
altitudes above 4,000 feet. Refer to the original Vehicle Emission Control Information label to identify these vehicles.
NOTE:
Whenever these vehicles are returned to operation at altitudes above 4,000 feet, the MCU ground wire must be reinstalled, the idle/decel
switch reconnected to the EGR port, the ignition timing and idle speed reset and the Vehicle Emission Control Information Update label
removed.
5.
1986 GRAND WAGONEER/TRUCK 5.9L ENGINES
On 1986 Grand Wagoneer/Truck, 49-State/ California/Canada 5.9L models originally sold for operation at altitudes below 4,000 feet that are being
operated above 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.
1.
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.
2.
Install Vehicle Emission Control Information Update label, part number EF 8980 000 818, next to the original label.
These adjustments apply to 1986 Grand Wagoneer/Truck, 49-State/California/Canada 5.9L V-8 models originally sold 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 1986 Grand Wagoneer/Truck, 49-State/ California/Canada 5.9L models originally sold 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.
1.
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.
2.
Install Vehicle Emission Control Information Update label, part number EF 8980 000 819, next to the original label.
These adjustments apply to 1986 Grand Wagoneer/Truck, 49-State/California/Canada 5.9L models originally sold 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 operation at altitudes above 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.
