Fuel Injector(s)

WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 1991 Pontiac Sunbird, 1991 Pontiac Grand Prix, 1991 Pontiac Grand Am, 1991 Pontiac Firebird, and 1991 Pontiac Bonneville. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect fuel injector harness connector. Measure resistance across injector terminals at each injector. Resistance should be as specified. See FUEL INJECTOR RESISTANCE table.

FUEL INJECTOR RESISTANCE

Application

⁽¹⁾ Ohms

2.0L (VIN K)

1.6

2.2L (VIN G)

1.6

2.3L (VIN A & D)

1.9-2.1

2.5L (VIN R & U)

1.6

3.1L (VIN T)

12.0-12.4

3.3L (VIN N)

⁽²⁾

3.4L (VIN X)

12.0-12.4

3.8L (VIN C)

⁽²⁾

5.0L (VIN E)

1.2

5.0L (VIN F)

16.2

5.7L (VIN 7)

1.2

5.7L (VIN 8)

10.0

⁽¹⁾	Injector resistance specification is at 140°F (60°C).

⁽²⁾	Information not available at time of publication. Solenoid should have resistance; however, infinite resistance indicates an open injector winding.

NOTE: If injectors are dirty, they should be cleaned using approved injector cleaning procedure before performing INJECTOR BALANCE TEST.