Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fuel Injector Resistance Test
Turn ignition off. Disconnect fuel injector 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.
| Application | (1) Ohms | ||||
|---|---|---|---|---|---|
| 1.8L Turbo (A4) | (2) 11-13 | ||||
| 2.7L Turbo & 2.8L (A4 & S4) | (2) 13.5-15.5 | ||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.