Vehicle - Altitude Performance Adjustment Procedure
83olds3SUBJECT NUMBER: 82-T-26
1982 OLDSMOBILE ALTITUDE PERFORMANCE ADJUSTMENT
5.7L V-8 DIESEL ENGINE
DATE: May 16, 1983
The 1982 Oldsmobile's equipped with 5.7L V-8 diesel engines will be manufactured with either high or low altitude diesel systems. A vehicle with a high altitude system will be invoiced with option NA6. The type of system can also be identified by the emission label attached to the fan shroud.. The label will indicate that the vehicle was designed for principal use at either high or low altitude.
These adjustments are considered Altitude Performance Adjustments and apply only to in-use vehicles. They should not be used to modify vehicles prior to sale.
Dealers must not sell vehicles with low altitude systems for principal use at high altitude.
CONVERSION OF LOW ALTITUDE SYSTEM TO HIGH ALTITUDE
Dealers in high altitude areas should encourage owners who have moved to high altitude counties to purchase the service adjustment procedure outlined below, which is considered an owner maintenance expense. See attachment for a list of counties which the Environmental Protection Agency has designated as high altitude counties.
FIGURE 1:
1. Replace the EGR valve vacuum control assembly (Fig. 1) with the assembly shown in the parts information.
2. Install magnetic tachometer probe, run engine until it is at operating temperature. Set idle speed to specifications, turn engine off.
3. Remove air cleaner and air crossover assemblies and install screen covers J-26996-2.
FIGURE 2:
4. Install shop towel in the intake manifold valley area under the injection pump head to absorb any fuel leakage. Remove housing pressure tap plug and seal located on the rear of the pump (Fig. 2).
5. Assemble locknut and new seal (O-ring) to metering valve stop screw as shown.
6. Install assembly in injection pump until locknut contacts pump housing. Tighten locknut.
7. Place transmission in park, Turn A/C off and start engine.
8. Loosen locknut and slowly turn metering valve stop screw clockwise until idle speed drops approximately 10 RPM.
9. Turn metering valve stop screw counterclockwise 3 turns on 88 wagons and 2-1/2 turns on all except 88 wagons and tighten locknut.
10. Check installation for fuel leaks and remove shop towel from intake valley.
11. Turn engine off.
12. Remove magnetic tachometer probe and screened covers from intake manifold and reinstall parts removed.
FIGURE 3:
13. Type or print with ball point pen the dealer code and date in the space provided on the supplemental emission control label, part number 14057201 or equivalent, Figure 3 (part of kit). The label must be placed next to the existing underhood emission control information label to the extent possible. The label should not be affixed to any equipment that can be easily detached from the vehicle. Wash off the area with soap and water, dry thoroughly, and apply the new label.
PARTS INFORMATION
Part Part Number
1. EGR Valve Vacuum Control Assembly High Altitude Application
All Models Except 88-Wagons 3-Speed A/T 22515542 or equivalent
88-Wagon w/3-Speed A/T 22515167 or equivalent
Label 14057201 or equivalent
2. Altitude Adjustment Kit 22516487 or equivalent
Kit Contents Quantity
Locknut 1
Seal 1
Metering Valve Screw 1
Label 1
(See Figure 3)
Suggested Time
The suggested time to perform High Altitude adjustment and part replacement procedure listed above is 0.4 hour labor.
CONVERSION OF HIGH ALTITUDE VEHICLES TO LOW ALTITUDE
Dealers should advise owners moving to low altitude areas that they should purchase the service adjustment procedure outlined below which is considered an owner maintenance expense.
FIGURE 1:
1. Replace the EGR valve vacuum control assembly (Fig. 1) with the assembly shown in the parts information.
2. Remove air cleaner.
FIGURE 2:
3. Determine if the injection pump contains a pressure tap plug or a metering valve stop screw (Fig. 2).
4. If equipped with a pressure tap plug go to step 6.
5. If equipped with a metering valve stop screw, remove air crossover, loosen lock nut and turn stop screw out (counterclockwise) four to five turns. Tighten lock nut and install crossover.
6. Install air cleaner.
FIGURE 4:
7. Type or print with ball point pen the dealer code and date in the space provided on the supplemental emission control label, part number 14055121 or equivalent (Fig. 4). The label must be placed next to the existing underhood emission control information label to the extent possible. The label should not be affixed to any equipment that can be easily detached from the vehicle. Wash off the area with soap and water, dry thoroughly and apply the new label.
PARTS INFORMATION
Part Part Number
1. EGR Valve Vacuum Control Assembly Low Altitude Application
All Models Except 88-Wagon 3-Speed A/T 22514746 or equivalent
88-Wagon w/3-Speed A/T 22512323 or equivalent
2. Label 14055121 or equivalent (See Figure 4)
Suggested Time
The suggested time to perform the Low Altitude adjustment and part replacement procedure listed above is 0.4 hour labor.
COUNTIES WHICH ARE DESIGNATED HIGH-ALTITUDE AREAS
ARIZONA
Apache Navajo
Cochise Yavapai
Coconino
COLORADO
Adams Kit Carson
Alamosa Lake
Arapahoe LaPlata
Archuleta Larimer
Boulder Las Animas
Chaffee Lincoln
Cheyenne Mesa
Clear Creek Mineral
Conejos Moffat
Costilla Montezuma
Crowley Montrose
Custer Morgan
Delta Otero
Denver Ouray
Dolores Park
Douglas Pitkin
Eagle Pueblo
Elbert Rio Blanco
El Paso Rio Grande
Fremont Routt
Garfield Saguache
Gilpin San Juan
Grand San Miguel
Gunnison Summit
Hinsdale Teller
Huerfano Washington
Jackson Weld
Jefferson
IDAHO
Bannock Franklin
Bear Lake Fremont
Bingham Jefferson
Blaine Lemhi
Booneville Madison
Butte Minidoka
Camas Oneida
Caribou Power
Cassia Teton
Clark Valley
Custer
MONTANA
Beaverhead Madison
Deer Lodge Meagher
Gallatin Park
Jefferson Silver Bow
Judith Basin Wheatland
Powell
NEBRASKA
Banner Kimball
Cheyenne Sioux
NEVADA
Carson City Lyon
Douglas Mineral
Elko Nye
Esmeralda Pershing
Eureka Storey
Humboldt Washoe
Lander White Pine
Lincoln
NEW MEXICO
Bernalillo Mora
Catron Rio Arriba
Colfax Roosevelt
Curry Sandoval
DeBaca San Juan
Grant Sans Miguel
Guadalupe Santa Fe
Harding Sierra
Hidalgo Socorro
Lincoln Taos
Los Alamos Torrance
Luna Union
McKinley Valencia
Otero
OREGON
Harney Lake
Klamath
TEXAS
Jeff Davis Hudspeth
Parmer
UTAH
Beaver Morgan
Box Elder Piute
Cache Rich
Carbon Salt Lake
Daggett San Juan
Davis San Pete
Duschesne Sevier
Emery Summit
Garfield Tooele
Grand Unitah
Iron Utah
Juab Wasatch
Kane Wayne
Millard Weber
WYOMING
Albany Natrona
Campbell Niobrara
Carbon Park
Converse Platte
Fremont Sublette
Goshen Sweetwater
Hot Springs Teton
Johnson Vinta
Laramie Washakie
Lincoln Weston