Back to all

Blair's Ferry Automotive Automotive Tips: Alternator

January 29, 2023

Your alternator makes electricity to start and run your engine and all of the vital electrical systems in your vehicle. That’s everything from the on-board computers to the turn signals. And of course there is the entertainment system, seat heaters, power windows and everything you plug into the power outlets. After your alternator makes enough electricity to do all that, it recharges your battery with what’s left over.

When Marion drivers constantly have a low or dead battery, the alternator is usually a prime suspect. However, the alternator is just one vital component of the starting/charging system, and a problem with any of the other components could be the actual cause.

In addition to the alternator, the charging/starting system includes the battery, starter, serpentine belt system and all of the electrical cables that connect them. Your Blair's Ferry Automotive service advisor has a systematic process of testing components and connections to get to the source of your trouble. The initial symptoms determine where to begin the diagnostic process, and he follows the procedure until he tracks down the culprit.

For example, diagnostic tests at Blair's Ferry Automotive could reveal that the alternator is not generating enough electricity to keep the battery charged. Is the alternator bad? Not necessarily. A worn serpentine belt tensioner could be allowing the belt that spins the alternator to slip. So the perfectly good alternator is not spinning at the proper speed. The solution for Marion drivers is to replace the serpentine belt system – not the alternator.

The good news for Marion drivers is that our highly-trained technicians at Blair's Ferry Automotive can properly diagnose all your vehicle troubles and make the necessary repairs to get you back on the road in Marion.

Give us a call.

Blair's Ferry Automotive
1565 Blairs Ferry Rd.
Marion, Iowa 52302
319-447-6310
http://www.blairsferryautomotive.com



Need Service?

Request a Quote

More articles from Blairs Ferry Automotive

10 Things That Are Lowering Your Fuel Economy

October 12, 2025

Regardless of whatever current gas prices may be, if you could use less gas, wouldnt you? Well, here are 10 things that are robbing you of better fuel economy that you can change for the better: Not enough air in your tires. Underinflated tires have a smaller rolling diameter and more res... More

Getting from E to F (Fuel Gauge Problems)

October 5, 2025

Who thinks about their fuel gauge? You probably don't until it doesn't work any more. Then you have to guess how much fuel is in your tank, and that's no way to live life on the road. Fuel gauges, like every other part in your vehicle, can fail. And when yours stops working, you will probably... More

You Are the Fluid Detective! (Leaking Fluids)

September 28, 2025

When you see some liquid sitting underneath your vehicle, your mind starts churning. Is that normal? Is that something serious, or did I just spill my drink? Heres a quick list of what those fluids look, smell and feel like, as well as what they might be. No, we dont recommend you taste them to ... More