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How do I troubleshoot a vehicle that won't start?

How do I troubleshoot a vehicle that won't start?
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  • John Lloyd

Here are some things to try if your car won't turn over.

  1. What To Do If Your Car Won't Start: ...
  2. Try: Cycling the Key. ...
  3. Try: Tapping on the battery Terminals. ...
  4. Try: Smacking the starter. ...
  5. Try: Shifting the Shifter. ...
  6. Try: Swapping Relays. ...
  7. Try: Smacking the Fuel Tank. ...
  8. Try: Un-flooding a flooded engine.

  1. How do you diagnose a non starting car?
  2. When your car won't start but all the lights come on?
  3. What is wrong when you turn the key and nothing happens?
  4. What causes a car not to start if the battery is good?
  5. Why won't my car start but my radio works?
  6. How do you tell if its your starter or your battery?
  7. How do you tell if it's your starter or ignition switch?
  8. What are the signs of a bad ignition switch?
  9. What fuse would cause my car not to start?
  10. What causes a no crank no start?
  11. What would cause a car to have no power at all?

How do you diagnose a non starting car?

Diagnose: Why Won't My Car Start

  1. 1) Is the engine cranking? ...
  2. 2) Check the trouble code memory. ...
  3. 3) Check the crankshaft/camshaft sensors. ...
  4. 4) Check the fuel pressure. ...
  5. 5) Check the spark from the ignition coil. ...
  6. 6) Check if the injectors are opening. ...
  7. 7) Check the crankshaft/camshaft timing. ...
  8. 8) Check compression/leak down test.

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

This means that the issue of your car not being able to turn over but your lights coming on will cease to exist. However, if it doesn't start, a blown fuse might be the problem, a broken ignition switch, or a bad starter. Luckily for this, you can generally tell when your car has blown the fuse.

What is wrong when you turn the key and nothing happens?

If nothing happens when you turn the ignition key to the "Start" position, it means that the starter motor doesn't turn over the engine. Most commonly this could be caused by a dead battery; here is How to check the battery. ... The ignition switch could be bad - it's a common problem.

What causes a car not to start if the battery is good?

Dead Battery – A dead battery is the most common reason your car won't start. ... Bad Ignition Switch – If you know your battery is working properly, but your car doesn't turn over on the first few tries, you might have a problem with the ignition switch.

Why won't my car start but my radio works?

The most common causes of no-start conditions are the battery, starter, battery cable, ignition switch, or the fuel pump. Any of these can be intermittent issues, which will not always act up. Given that you have had success with shaking the battery cables, this may indicate that one of the cables is failing.

How do you tell if its your starter or your battery?

When you attempt to start the car, there is a low whining sound. If jump starting gets your engine started and running, but the car will not start again once you turn it off, the battery is probably the problem.

How do you tell if it's your starter or ignition switch?

Test the Starter

It is under the hood, usually on the passenger side at the bottom of the motor next to the transmission. The ignition switch is a set of electrical contacts that activates the starter and usually is located on the steering column.

What are the signs of a bad ignition switch?

These are the most common symptoms of ignition switch trouble.

What fuse would cause my car not to start?

What fuse causes a 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.

What causes a no crank no start?

If the fuel pump, fuel injector, or fuel filter is damaged, this can cause the no crank/no start condition. ... If the filter is clogged, the fuel going into the engine will be impeded. The last thing that could be faulty with the fuel system is the fuel supply line.

What would cause a car to have no power at all?

If you are driving your vehicle and suddenly everything "dies" - i.e. all of your electrical devices stop functioning - it means power isn't getting through. ... Possible causes of a power failure could be either bad battery connections, a bad ignition switch, or a bad alternator.

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