Jeep 1987 Wrangler Workshop Manual page 1145

2
1. 1S85 ALLIANCE/ENCORE 1.4L - 1.7L
ENGINES AND FUEGO/SPORTWAGON
2.2L ENGINE
1985 Alliance/Encore 1.4L - 1.7L engines and
Fuego/Sportwagon 2.2L engines do not require
adjustment. The electronic control systems on
t h e s e e n g i n e s h a v e built-in c o m p e n s a t i n g
circuits that m a k e n e c e s s a r y adjustments
automatically.
2, 1985 CHEROKEE/WAGONEER 78 SERIES
2.8L GASOLINE A N D 2.1L DIESEL ENGINES
For 1985, only the Cherokee/Wagoneer, 70
Series, 49-State/Canada 2.8L gasoline engine
requires adjustment a s outlined below. T h e
1985 4 9 - S t a t e / C a n a d a and California 2.1 L
diesel engine and 1985 California 2.8L gasoline
engine do not require adjustment. T h e fuel
metering control s y s t e m s on these engines
have built-in compensating devices that make
necessary adjustments automatically.
49-State/Canada 2 J L Engine Adjustment
On 49-State/Canada (ONLY) 1985 Cherokee/
W a g o n e e r 70 S e r i e s 2 . 8 L models sold for
operation at altitudes below 4,000 feet that are
being operated above 4,000 feet, the ignition
timing a s s h o w n on the original V e h i c l e
Emission Control Information label in the engine
compartment, should be a d v a n c e d 7 ° and
engine idle speed reset to the specifications
indicated on this s a m e 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
s a m e label.
2. Install Vehicle Emission Control Information
Update label, P/N E F 8980 000 743, next to
the original label.
This adjustment applies to 1985 C h e r o k e e /
Wagoneer, 49-State/Canada 2.8L models that
were originally sold for principal use at altitudes
below 4,000 feet. Refer to the Vehicle Emission
Control Information label in the engine com-
partment 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 speci-
fications and the Vehicle Emission C o n -
trol Information Update label removed.
On 49-State/Canada (ONLY) 1985 Cherokee/
W a g o n e e r 70 S e r i e s 2.8L models sold for
operation at altitudes above 4,000 feet that are
being operated below 4,000 feet, the ignition
timing a s s h o w n on the original V e h i c l e
Emission Control Information label in the engine
compartment should be retarded 7° and engine
idle reset to the specification indicated on this
s a m e 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 s a m e label.
2. Install Vehicle Emission Control Information
Update label, P/N E F 8980 000 744, next to
the original label.
This adjustment applies to 1985 C h e r o k e e /
Wagoneer, 49-State/Canada 2.8L models thai
were originally sold for principal use at altitudes
above 4,000 feet. Refer to the Vehicle Emission
Control Information label in the engine com-
partment 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 speci-
fications and the Vehicle Emission C o n -
trol Information Update label removed.