Your question: Why would a car not start if the battery and alternator are good?

Why is my car not starting with a new battery and alternator?

With a new starter, battery, and alternator (assuming you have not drained the battery attempting to start it), the starter should attempt to crank over the engine. If the starter does not make any noise when the key it turned to crank over the engine, you have an issue with the fuses, or the circuit.

What fuse would cause my car not to start?

A blown fuse in the starter circuit could be the cause of a no-start problem. Broken or corroded wiring – Damaged or dirty wires to the battery or to the starter solenoid (or wires that are loose) can prevent sufficient power from reaching the starter.

How do I know if my starter or ignition switch is bad?

Signs Of A Faulty Ignition Switch

  1. Car Won’t Start. If you turn your key and the car attempts to start, but fails, then you might have a broken ignition switch. …
  2. Key Won’t Turn. …
  3. Car Stalls. …
  4. No Noise From The Starter. …
  5. Dashboard Lights Flicker.
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How do I know if my starter relay is bad?

5. Symptoms of starter relay failure

  1. The vehicle cannot be started. The failure of a car to start is one of the most obvious signs of a car breakdown. …
  2. The start relay remains open after the engine is started. …
  3. The starter makes a clicking sound. …
  4. The vehicle starts intermittently.

Is my battery dead or my alternator?

If the engine starts but dies immediately, your alternator probably isn’t keeping your battery charged. If a jump starts and keeps your car running, but the car can’t start again off of its own power, a dead battery is likely your answer.

How do you tell if it’s the battery or alternator?

If your engine won’t turn over or takes far longer than usual, it’s time to grab the jumper cables and attempt a jump-start. If your engine starts and stays running but won’t start again later, it’s likely a battery problem. If your vehicle immediately stalls, it’s probably a bad alternator.

Will a car start with a blown alternator fuse?

If the alternator’s fuse or fusible link is blown, the alternator will not be able to charge the battery. The battery then doesn’t store enough power for starting the car or keeping it running.

How do I know if my starter fuse is blown?

How To Tell If Starter Relay Is Bad?

  1. The Vehicle Is Dead. The most obvious symptom is a completely silent car that does not respond when you turn the ignition key. …
  2. Starter Making Clicking Sounds. …
  3. Occasional Failures In Starting The Vehicle. …
  4. Starter Does Not Get Switched Off.
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What does it mean when you turn the ignition and nothing happens?

If you turn the ignition on and no lights come on on the instrument panel, it means that there is no power coming from the battery. It could be a dead battery, loose battery terminal or something like a bad ignition switch or blown main fuse.

When your car won’t start but all the lights come on?

Similar to the starter engine, a broken or damaged ignition switch can stop your car from starting. If your headlights can turn on, but your car won’t crank, that means that your battery is charged, but either the starter or ignition is the problem.

Why would my car suddenly not start?

If your vehicle won’t start, it’s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you’re dealing with a battery or an alternator problem.

Can you jump start a car with a bad starter relay?

Jump-starting a car with a bad starter motor will not help start the engine. Jump-starting will only boost battery power. A manual transmission car with a bad starter maybe push or tow started but an auto transmission car can not.

Where is the ignition fuse located?

The ignition relay is usually found in the fuse box situated underneath the hood or somewhere under the car’s dashboard. It transfers electricity from the battery to the ignition components, which allows you to start the car in the blink of an eye.

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Where is the starter fuse?

It can be in the fuse box (also called a power box), the fuse panel under the dash, or on the right fender. Most cars will have it located under the hood, inside the long box with a black cover. Often called the fuse box, this is where a vehicle’s fuses and relays are mounted.