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Choosing a New Aftermarket Alternator for Your 1989-1991 Audi 200

Keep your classic Audi 200's complex electrical system powered correctly with the right new alternator.

4 minutes to read 1989-1991 Audi 200
Difficulty
3/5
Est. Time
2.5 hrs
DIY Doable?
✅ Yes
Shop Labor
$250-$450
Used OEM Price
$50-$100
🚫 Do not drive — Driving with a bad alternator is not recommended, as the car will run on battery power alone and could shut down unexpectedly in traffic.
Key Takeaways
  • Bosch is the original equipment manufacturer and the most recommended brand for reliability and fit.
  • Verify your car's required amperage (90A or 115A) before purchasing a replacement to ensure proper function.
  • Always test the battery and charging system with a multimeter before replacing the alternator to confirm it's the source of the problem.
  • While a DIY replacement is feasible, access is tight and may require putting the car in 'service position' for easier removal.
The alternator in your 1989-1991 Audi 200 is the heart of its electrical system. It works like a small generator, turned by a belt from the engine. Its main job is to create electrical power to run everything from the headlights and radio to the advanced (for its time) engine control unit (ECU). It also recharges your car's battery while you drive, making sure it's ready to start the engine next time. Without a working alternator, your Audi will only run for a short time on battery power before it dies.

Is Your Audi 200 Alternator Failing?

The alternator in your 1989-1991 Audi 200 is a critical component that powers all electronics and recharges the battery. Given the age of these vehicles, alternator failure is a common issue. Recognizing the symptoms early can prevent you from being stranded.

Common Failure Symptoms:

  • Dimming or Flickering Headlights: This is one of the most common signs, especially noticeable at idle or when using other electronics.
  • Battery Warning Light: An 'ALT' or battery-shaped light on your dashboard indicates a problem with the charging system.
  • Slow or Dead Battery: If the alternator isn't recharging the battery, you'll have trouble starting the car, or it may die completely.
  • Electrical Gremlins: Unpredictable issues with the radio, power windows, or climate control can point to an inconsistent power supply from a failing alternator.
  • Whining or Grinding Noises: A high-pitched whine or grinding sound from the engine bay can indicate a bad bearing inside the alternator.

Test Before You Replace

Before buying a new alternator, it's wise to confirm the old one is truly the problem. A simple multimeter test can check the voltage. With the engine off, a healthy battery should read around 12.6 volts. With the engine running, the voltage should increase to between 13.8 and 14.4 volts. If the voltage doesn't rise, or if it goes too high, the alternator or its internal voltage regulator is likely faulty.

Choosing the Right Aftermarket Alternator

For a classic vehicle like the Audi 200, choosing a replacement part requires careful consideration. The original alternator was made by Bosch, and they are still considered the gold standard for these cars.

Brand Quality Tiers for Your Audi 200:

  • Top Tier (OEM Supplier): Bosch is the original equipment manufacturer for your Audi. Choosing a new or remanufactured Bosch alternator is the safest bet for guaranteed fit, performance, and longevity. They are built to handle the specific electrical demands of your vehicle.
  • Mid-Tier (Reputable Aftermarket): Brands like Remy have been in the industry for a long time. While some users report good experiences, others have noted premature failures, particularly with bearings. Remy is now owned by BBB Industries.
  • Economy Tier (Varying Quality): Brands like BBB Industries and MPA (Motorcar Parts of America) supply many auto parts stores and offer a more budget-friendly option. However, quality can be inconsistent. Some users report success, while others experience early failures. These may be a viable option if the budget is tight, but be aware of the potential for a shorter lifespan.

New vs. Remanufactured

For this specific vehicle, a new aftermarket part from a top-tier brand like Bosch is often preferable to a remanufactured unit from a lesser-known brand. However, a remanufactured alternator from Bosch is also an excellent, reliable choice, as they are rebuilt to strict factory standards. Many forum users express more trust in a remanufactured unit from an OEM supplier than a new unit from an unknown brand.

Estimated Costs for Alternator Replacement

The cost can vary depending on the brand you choose and whether you do the work yourself or hire a professional mechanic.

Part / Service Estimated Cost
New Aftermarket Alternator (BBB, MPA, Remy) $136 - $191
Remanufactured Bosch Alternator $150 - $220
Shop Labor $250 - $450
Total Professional Replacement $386 - $641

Frequently Asked Questions (FAQ)

Do I need a 90 amp or 115 amp alternator?

The 1989-1991 Audi 200 was available with different alternator amperages, most commonly 90 amp and 115 amp versions. It is critical to match the amperage of your original unit. Using an underpowered alternator can cause electrical issues and premature failure. If you have added significant electrical accessories like a powerful stereo system, a high-output alternator (140+ amps) might be a consideration, but this often requires wiring upgrades.

Is replacing the alternator a DIY job on the Audi 200?

For a moderately experienced home mechanic, yes. The alternator is located at the front of the engine. Access can be tight, and you may need to remove the fan and other components to get it out. Some guides suggest putting the front of the car into the "service position" by pulling the lock carrier forward to create more room. You will need a set of metric wrenches and Allen sockets. If you are not comfortable with this, a professional mechanic can do the job in 2-3 hours.

Are there any recalls for the 1989-1991 Audi 200 alternator?

No, searches on the NHTSA database and other sources found no specific alternator recalls or widespread Technical Service Bulletins (TSBs) for the 1989-1991 Audi 200. Recalls found were for much newer Audi models with different starter-generator systems.

Can I just replace the voltage regulator?

Sometimes, only the voltage regulator, which is a component of the alternator, fails. On many older Bosch alternators, this part is replaceable. If a voltage test shows the alternator is over-charging (above 15 volts), the regulator is almost certainly the problem. However, if the failure is due to worn bearings (whining noise) or an internal short, the entire unit must be replaced.

Technical Specifications

OEM Part Numbers: 034903015B 034903015C 034903017

Voltage: 12V, Amperage: 90A or 115A, Pulley: V-Belt, Regulator: Internal, Rotation: Clockwise.

Wrenchy
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.

Year Coverage
This article covers the Alternator for:
  • Audi 200: 198919901991
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