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.
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HOMESERVICE MANUALSAUDI199590 BASE, 2.8 K, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCHARGING SYSTEMSALTERNATOR & REGULATORTESTINGON-VEHICLE TESTINGGENERATOR OUTPUT TEST
1995 Audi 90 Base, 2.8 K, Automatic
Generator Output Test
1995 Audi 90 Base, 2.8 K, AutomaticSECTION Generator Output Test
- Ensure connections at battery, generator and starter are clean and tight. Ensure generator, engine and body are properly grounded. Ensure drive belt is adjusted and in good condition.
- Connect Ammeter/Voltmeter Tester (VAT-40/60 ) according to manufacturer's instructions. Operate engine at 2000 RPM. Generator output should be 90-110 amps.
- If generator output is low, repair or replace generator. If reading is 16-20 amps less than generator rating, replace regulator. If output is still low, repair or replace generator.
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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.