FixVault

Fuel Injector Resistance Test

WARNING: This page is about a different car, the 2002 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition off. Disconnect suspect fuel injector 2-pin harness connector. Using a DVOM, measure resistance across fuel injector terminals. See FUEL INJECTOR RESISTANCE  table. If resistance is not within specification, replace fuel injector.

FUEL INJECTOR RESISTANCE

Application (1) Ohms
2.7L Turbo (S4) (2) 13.5-15.5
4.2L (2) 13-16
(1) Measurement taken at room temperature (approximately 68°F).
(2) Add 4-6 ohms if injector is at operating temperature.