Installation manual

90-898305

4-32

2.5 & 3.0 Liter OptiMax

DIRECT INJECTOR - 2002 MY RUNNING CHANGE

New direct injector with encapsulated coil winding. A hard plastic coating is

placed around the winding prior to the molding process for the plastic housing.

This prevents the outer windings of the coil from being pushed out of place

and shorting to the metal housing as the plastic molding material is injected

into the mold. This product improvement should reduce or eliminate shorted

windings. When this change occurs the blue dot injector housing will be

molded out of blue plastic.

NOTE: The color of direct injectors have changed over time as follows:

• All BLACK Injectors supersede to BLUE Injectors.

• The GRAY Injectors are used on 3 Cylinder models and All High

Performance models.

Direct Injector Shorted to Ground

Models: All OptiMax Product, 1998 and Newer

Situation:

Current service literature indicates that there should be no

continuity between the direct injector connector pins and engine ground.

Engineering has determined that direct injectors that have an ohms reading

from each connector pin to ground greater then 700 ohms will operate

correctly and does not need to be replaced

NOTE: For best results check the direct injector for continuity to ground

when the injector is near operating temperature (engine warmed up).

To allow for meter and/or temperature variations, a reading of 1000 ohms has

been set as the determining point to replace or not replace the direct injector.

• Meter reading greater then 1000 ohms, the injector performance will

not be affected and does not need to be replaced

• Meter reading less then 1000 ohms, the performance could be affected

and the injector should be replaced

Notes

_______________________