Jeep 1987 Wrangler Workshop Manual page 1151

8
5.1985 GRAND WAGONEER/TRUCK
5.91 ENGINE
On 1985 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 a s 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, P/N E F 8980 000 743, next to
the original label.
These adjustments apply to 1985 Grand
Wagoneer/Truck, 49-State/California 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
s p e e d must be reset to original
specifications and the Vehicle Emission
Control Information Update label
removed.
On 1985 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 a s 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, P/N E F 8980 000 744, next to
the original label.
T h e s e adjustments apply to 1985 Grand
Wagoneer/T ruck, 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
s p e e d must be reset to original
specifications and the Vehicle Emission
Control Information Update label
removed.