Won’t Start
Why won’t my car start?
Few things derail your day like turning the key and getting nothing. The clue to what is wrong is in exactly how your car fails to start — a slow crank, a single click, or total silence each point to different causes.
Quick Answer
If your car won’t start, the most common cause is a dead or weak battery, especially in cold weather. A rapid clicking with no crank also points to the battery; a single click usually means the starter. If the dash lights work but the engine cranks slowly or not at all, have the battery, starter, and alternator tested.
Most Likely Causes
Listed from most to least likely. Only a proper inspection can confirm the exact cause for your vehicle.
- 1
Dead or weak battery
Most likelyBy far the most common cause, especially in Colorado’s cold. Symptoms include slow cranking, dim lights, rapid clicking, or a completely dark dashboard. Batteries typically last 3–5 years.
- 2
Failing starter motor
CommonA single loud click (or nothing) when the battery is known good often points to the starter, which physically turns the engine over.
- 3
Bad alternator (not charging)
PossibleIf your battery keeps dying or the car dies shortly after a jump start, the alternator may not be recharging the battery while you drive.
- 4
Corroded connections or fuel/ignition issue
Less commonLoose or corroded battery terminals, a blown fuse, a failed ignition switch, or a fuel-delivery problem can also prevent starting and need diagnosis.
How Adam & Son Diagnoses It
Free battery and charging test
We test battery health, the charging system, and the starter draw to identify the true cause instead of guessing.
Electrical diagnostics
If the battery checks out, we trace the starting circuit — connections, fuses, ignition, and fuel delivery.
Clear estimate
You get a transparent explanation and estimate before any work begins, with no commission pressure.
Related Services
The repairs and inspections that address this symptom.
Frequently Asked Questions
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