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HOMESERVICE MANUALSBUICK1990REGAL CUSTOM, 3.8 L, 4T60/ME9REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYSTEM/COMPONENT TESTSFUEL CONTROL (FUEL INJECTED)FUEL INJECTOR(S)
1990 Buick Regal Custom, 3.8 L, 4T60/ME9

Fuel Injector(S)

1990 Buick Regal Custom, 3.8 L, 4T60/ME9SECTION Fuel Injector(S)

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

FUEL INJECTOR RESISTANCE

Application (1) Resistance (Ohms)
2.0L (VIN K) 1.6
2.0L Turbo (VIN M) 2.0
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
3.1L Turbo (VIN V) 12.0-12.4
3.3L (VIN N) (2)
3.8L (VIN C) (2)
5.0L (VIN E) 1.2
5.0L (VIN F) 10.0
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 from manufacturer. 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.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
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