Test Description

WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport and 2002 Isuzu Rodeo. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

4

When engine is idling or at steady cruise, HO2S voltage should vary between about 100-900 mV. During Power Enrichment mode, more fuel is needed, and HO2S voltage should rise to above 447 mV. This step verifies that Bank 1 HO2S is operating properly.

5

Wrap a shop towel around the fuel pressure connector to absorb any small amount of fuel leakage that may occur when installing gauge. When ignition is on, pump pressure should be 41-46 psi (280-320 kPa).

7

Be careful to use correct pliers so fuel lines will not be damaged.