B250 3/4 Ton Van V8-360 5.9L (1984)
Air/Fuel Mixture: Technical Service Bulletins
Engine - High Altitude Conversion Package
Models
1984 318-4V & 360-4V Heavy Duty Truck
Subject
High Altitude Conversion Package & Adjustment for Improved Engine Performance
Index
EMISSIONS
Date
11/12/84
No.
25-05-84
P-5036C
A package is now available to accommodate a customer who wishes to convert his 1984 low altitude vehicle for improved high altitude (over 4,000 feet
above sea level) engine performance.
Vehicles with the low altitude package transferred to service in high altitude areas may exhibit undesirable driveability. However, the installation of a
high altitude conversion package is voluntary and at the customer's expense.
The high altitude field conversion packages and procedures outlined below have been authorized on the following 1984 non-altitude equipped engine
families in service at altitudes above 4,000 feet above sea level..
CONVERSION INSTRUCTIONS
Sea Level to Altitude
IMPORTANT:
IN SOME OF THE CONVERSION PROCEDURES YOU WILL BE REQUIRED TO INSTALL A NEW VEHICLE
EMISSION CONTROL INFORMATION UPDATE (VECIU) LABEL, PN 4275084.
FIGURE 1
THIS LABEL HAS TWO AREAS THAT ARE IMPACT IMPRINTABLE WITH A TYPEWRITER (FIGURE 1).
IF YOU ARE REQUIRED TO READJUST TIMING, CURB IDLE SPEED, OR FAST IDLE SPEED TO A
SPECIFICATION DIFFERENT THAN THE ORIGINAL VECI LABEL, THEN JUST TYPE IN THE NEW
SPECIFICATION AFTER THE SUBJECT OPERATION. IF YOU ARE ASKED TO REFER TO THE ORIGINAL VECI
