Rampage L4-135 2.2L (1983)
Engine Control Module: Customer Interest
Engine - Poor Driveability Cold/Rough Idle
Models
1983 2.2L Rampage & Scamp Trucks With Automatic or Manual Transmission & Federal Low Altitude Emission System Only (Without O2 Feedback)
Subject
Cold Driveability Improvement & Rough Idle Warm
Index
FUEL
Date
July 6, 1983
No..
14-19-83 REVISION A
P2378C
This bulletin supersedes Technical Service Bulletin #14-19-83 and has been revised to reflect corrected carburetor part numbers.
SYMPTOM/CONDITION
Subject model vehicles built before December 2, 1982 may exhibit the following driveability conditions:
^
Rough idle, acceleration sags, and poor performance when engine is cold.
^
Rough idle with engine warmed up.
PARTS REQUIRED
Model
Previous
Revised
Item
Application
Part No.
Part No.
ESA/EFC Module
All
5213691
5213868
Carburetor
Auto. Trans.
4227381
*4300018
Carburetor
Manual Trans.
4227380
*4300017
1 - Carburetor Flange Gasket
PN 4095975
1 - Authorized Modification Label
PN 4275086
*Revised part numbers.
NOTE:
THIS PROCEDURE ONLY APPLIES TO VEHICLES WITH ESA/EFC MODULE PN 5213691.
INSTALLATION INSTRUCTIONS
1.
Install replacement ESA/EFC module.
2.
Install appropriate carburetor from parts chart above, use new Carburetor Flange Gasket, PN 4095975.
3.
Start engine and allow to fully warm up.
4.
Check and reset basic timing, idle rpm, and hot fast idle per VECI label if necessary.
