Safari Van M V6-262 4.3L VIN W CPI (1992)
LIGHT DUTY TRUCK FUEL AND EMISSIONS service manual. This section includes an "ELECTRONIC SPARK CONTROL SYSTEM
CHECK" with a fault tree for the 4.3L CPI engine.
b.
Operate the vehicle with premium fuel. If the noise is eliminated, the noise is not coming from the balance shaft rear needle bearing. Refer to
the DRIVEABILITY SYMPTOMS section of the LIGHT DUTY TRUCK FUEL AND EMISSIONS service manual.
c.
If the ESC system is functioning properly and the noise is still audible using premium fuel, the source of the noise is most probably the rear
needle bearing of the balance shaft.
d.
To eliminate the possibility of the rear needle bearing rattling, a production running change was made in early May 1992, to a different type
bearing. The needle bearing was changed to a journal type sleeve bearing (much like a camshaft bearing). This type bearing requires
pressure fed oil, therefore, an engine block casting change was made to allow an oil passage to be drilled from the vertical oil gallery
coming from the oil filter to the rear balance shaft journal.
e.
If the detonation type rattle noise is unacceptable to the customer, the engine must be replaced using an SPO Goodwrench engine assembly
(P/N 12520408).
Part Information
FOR M/L
CAUTION:
DO NOT REUSE P/N 15688341. The M/L Van requires the use of this bolt to allow the engine assembly to break free of its mounts in a very extreme
frontal collision situation. MEM-CAL (If required, see calibration information listed below)
CALIBRATION INFORMATION FOR 1992 MODEL YEAR VEHICLES WITH SLEEVE BEARING ENGINES:
WARRANTY INFORMATION
For vehicles repaired under warranty use:
