Courier L4-2299cc Courier (1982)
Idle Speed/Throttle Actuator - Electronic: Technical Service Bulletins
High Altitude Driveability Modifications
Article No. 82-11A-1O
June 4, 1982
Subject:
Modification Of Sea Level Calibrations For Altitude Applications
Light Trucks
1982 Courier - All Except 2.0L High Altitude Calibration
Applicable Model:
WARNING:
This Modification Is Authorized Only For The Listed Engines. Performing This Modification On Other Engines Is Unauthorized And Could
Create Liability Under Applicable Federal Or Local Laws.
Customers who may have relocated and/or continually operate the subject vehicles in high altitudes (above 4,000 ft. altitude) may have the following
procedures performed to improve performance:
1.
Remove the air cleaner and duct assembly.
2.
Remove the bolts attaching the accelerator shaft to the throttle lever.
3.
Disconnect the fuel line and fuel return line at the carburetor.
4.
Disconnect the leads for the slow fuel cut valve (throttle solenoid) and coasting richer (deceleration valve) (2.3 litre only) at the quick disconnects.
Also, disconnect the carburetor-to-distributor vacuum line at the carburetor. Disconnect the hose connecting the carburetor to the vacuum
amplifier. Disconnect the vacuum hose for the purge control valve.
5.
Disconnect the throttle return spring (2.3 litre only). Then, disconnect the lead wire for the automatic choke. Remove the servo diaphragm link for
the throttle opener (2.0 litre only).
6.
Using Tool T72J-9510, remove the carburetor attaching nuts from the intake manifold studs and remove the carburetor.
7.
Remove the locking plate (only for Courier 2.3 litre and Courier chassis cab).
8.
Remove the plugs and main jets from the carburetor.
