E 350 Van L6-300 4.9L VIN E 1-bbl (1982)
Idle Speed: Technical Service Bulletins
High Altitude Driveability Modifications
Article No 82-11A-12
June 4, 1982
Subject:
Modification Of Sea Level Calibrations For Altitude Applications
Light Trucks
1982 E & F Series Trucks Over 8500 Lb. GVW With 4.9L Engine
Customers who may have relocated and/or continually operate the subject vehicles in high altitude (above 4,000 ft. alt.) may have the following
procedure per- formed to improve performance:
1. Remove the PCV valve EV-76 (D9DZ-6A666-A) and replace it with new PCV valve EV-77 (D8TZ- 6A666-A).
2. Advance ignition initial timing to 4 ° advanced over sea level specification.
3. Check and reset idle speeds for the Vehicle Emission Control Decal.
4. Obtain a Vehicle Emission Control Information Update Label (available at all Ford or Lincoln-Mercury dealers) and fill in the appropriate
information as indicated.
NOTE:
The Vehicle Emission Control Information Update Label is a new label to be used for altitude modifications. Do not use the Authorized
Modifications label which is used to indicate other types of modifications.
If the vehicle is returned to continuous sea level (below 4,000 ft. alt.) operation, the above procedures should be reversed and the Vehicle Emission
Control Information Update Label should be removed from the vehicle.
Parts Block
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP 6666-D-81
TIME: F 0.6 Hr.
Econoline 0.7 Hr.
DLR. Coding:
Basic Part No.
Code:
LO5
53
