Updated May 23, 2026
A no-start morning usually comes down to one of three parts: the battery, the alternator, or the starter. Here’s how to tell them apart so you replace the right one the first time.
Read the symptoms
- Nothing at all (no dash lights, no click) → dead battery or a bad connection.
- One loud click, no crank → usually the starter (or its solenoid).
- Slow, labored crank that fades → weak battery or a charging problem.
- Starts, then dies or lights dim while driving → likely the alternator.
Test the battery
With a multimeter across the terminals, a healthy battery reads about 12.6 volts at rest. Below 12.4V it’s low; below 12.0V it’s probably failing. A free load test confirms it.
Test the alternator
Start the engine and measure again. A working alternator pushes the reading up to about 13.7–14.7 volts. If it stays around 12V, the alternator isn’t charging the battery.
Suspect the starter
If the battery tests good but you still get a single click or silence, the starter is the usual suspect — especially if tapping it lets the car start once.
Get the right part
Once you know which part failed, match it to your exact vehicle — see how to find the right part. We carry batteries and starters & alternators, new and quality used, shipped to your door or delivered across Nebraska. Request a part and we’ll confirm the fit.