Ford Granada Alternator: A Guide to Replacement and Selection (1975-1982)
Keep your classic Ford running strong by understanding how to choose and replace a failing alternator.
- A failing alternator will cause dim lights, a dashboard warning light, and eventually a dead battery.
- Replacement is simple on a Granada and can be done by a DIYer in 1-2 hours.
- Consider replacing the external voltage regulator at the same time, as it is a common failure point.
- For a stock vehicle, a standard-output new aftermarket alternator is a reliable and cost-effective choice.
Is Your Granada's Alternator Failing?
The charging system on these Fords is straightforward, but a bad alternator can leave you stranded. Because these vehicles used an external voltage regulator for many model years, sometimes the regulator is the problem, not the alternator itself. However, if you notice the following symptoms, the alternator is a likely culprit.
Common Failure Symptoms:
- Dim or Flickering Lights: Headlights and dash lights may appear dim or flicker, especially at idle.
- Slow Electrical Accessories: Power windows might move slowly, or your radio's performance could suffer.
- Battery Warning Light: The 'ALT' or 'GEN' light on your dashboard is a direct indicator of a charging system problem.
- Whining or Grinding Noises: A high-pitched whine or a grinding sound from the front of the engine can signal failing alternator bearings.
- Dead Battery: An alternator that isn't charging will eventually lead to a battery that can't start the car.
Choosing a New Aftermarket Alternator
For a vehicle like the 1975-1982 Granada, finding a new original equipment (OEM) alternator from Ford is highly unlikely. Aftermarket parts are the go-to solution, and many are brand-new units that meet or exceed the original specifications. The electrical demands of a stock Granada are low, so a standard-output alternator is usually sufficient. However, if you've added accessories like a powerful stereo or extra lighting, a high-output alternator is a smart upgrade.
Aftermarket Brand Tiers
When shopping for a new alternator, you'll encounter several brands. Here’s a general breakdown based on available reviews and reputation:
- Premium/Performance: Brands like Proform are often associated with performance applications. They may offer higher amperage and custom finishes like chrome, which can be a good choice for modified cars.
- Standard Replacement: Remy and BBB Industries are established names in the aftermarket. They offer new and remanufactured units that serve as reliable replacements for the original part. While some users report long-term reliability, others have experienced premature failures, making warranty and purchase location important considerations.
- Economy: MPA (Motorcar Parts of America) offers various lines, including new and remanufactured options, often at a very competitive price point. These can be a good value for a daily driver or a budget-conscious repair.
Pro Tip: On many 1970s Fords, the alternator and voltage regulator are separate parts. If you replace the alternator but still have charging problems, the voltage regulator is a common and inexpensive part to replace next. A 1975 training film from Ford highlights this separate diagnosis process.
Replacement Cost
Replacing the alternator on a Granada is a job most DIY mechanics can handle. The part itself is affordable, and labor costs are minimal due to the easy access in the engine bay.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Alternator | $42 - $141 |
| Shop Labor | $100 - $200 |
| Total Estimated Cost | $142 - $341 |
Frequently Asked Questions
Can I install the alternator myself?
Yes, this is a very DIY-friendly job for this vehicle. It involves disconnecting the battery, loosening the drive belt, unbolting the old alternator, and installing the new one. The process typically takes about an hour or two with basic hand tools.
Should I replace the voltage regulator at the same time?
It's not required, but it's a good idea. The external voltage regulator is a common failure point on these older Fords. Since it's an inexpensive part and you're already working on the charging system, replacing it can prevent future issues.
Do I need a high-output alternator?
For a stock Granada, the standard 60-amp alternator is perfectly fine. You only need a high-output model if you have added significant electrical accessories like a large sound system, off-road lights, or other power-hungry devices.
Were there any recalls for the Granada alternator?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database did not find any recalls or specific technical service bulletins (TSBs) related to the alternator for the 1975-1982 Ford Granada.
Technical Specifications
OEM Part Numbers: D5FZ-10346-A D6FZ-10346-A D8FZ-10346-A
Most original alternators for the Ford Granada were externally regulated and had an output of around 60 amps. The system uses a V-belt for drive and features a 3-terminal plug on some models.
We Have This Part in Stock
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.