LeSabre V6-231 3.8L VIN A 2-bbl (1984)
Camshaft Position Sensor: All Technical Service Bulletins
Engine - Driveability Concerns/Poor Performance
Bulletin 84-6J-4
Date
Dec. '84
Ref. No. 85-007-6J
SUBJECT:
CAM SENSOR TIMING
MODELS AFFECTED: 1984 3.8L TURBOCHARGED ENGINE (VIN CODE 9)
The camshaft sensor timing is important for proper fuel delivery. Should an engine performance or driveability condition be encountered and no trouble
codes are stored in the ECM. The following inspections and checks should be performed:
^
Spark plugs (cracked)
^
Wiring and vacuum hose routing and connections
^
Fuel injectors for proper flow, (See injector balance test in Chassis ^ Service Manual). Possible turbo overboost condition due to PROM
calibration, see Service bulletin 84-6E-27 for correction.
^
Cam Sensor Installation (180~ Out of Time)
^
Cam Sensor timing, (See procedure in this bulletin)
PROCEDURE FOR CHECKING OF CAM SENSOR INSTALLATION TO ENSURE IT IS NOT TIMED 180~ OUT.
FIGURE 3
1.
Remove #1 spark plug.
2.
Using weatherpac removal tool J-28742-A, remove wire terminal "B" from die 3-way connector from cam sensor to coil, on the coil module side,
(Figure 3).
3.
Install jumper wire into terminal "B" of the 3-way connector and reconnect 3-way connectors.