You will need to test the small yellow wire with a blue stripe that goes to the starter and powers it when the ignition switch is turned to start. It can be hard to determine if you’re dealing with a battery or an alternator problem.
The main causes of car no starts:
Why won't car start if battery is good. If the starter or ignition is the problem, a starter engine can be jumped by using a charged battery. Your vehicle’s starter is responsible for transferring the electrical current received by the battery to the starter solenoid to crank the engine and get it going. If the battery does pass a load test and yet there is no starter operation with the key held in the start position, the procedure is to test for power and voltage.
Try to start the car with any extra keys you may have for it. It’s for the “start” signal from the ignition switch/neutral safety switch. The steps to diagnosing why your car isn’t starting:
We also recently changed the ignition module in the steering column. If the battery is discharged and the cable connections are good, you’ll want to fully charge the battery and start looking at the condition of the charging system. Top reasons why cars won’t start 1.
All engines need five things to start and run (fastc method of diagnosing): These are just some of the most common causes. The battery’s usually the main culprit behind issues with starting your car.
So the starter wires are good and the battery terminals are clean and good. Another common reason for your car won’t start, but the battery is good is a bad starter. It can also be caused by a bad starter, but if it cranks but won’t start it could be caused by a faulty spark plug or a clogged fuel filter.
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. In most cases if you found out that it is the solenoid try to replace only that one if possible. The second cheapest component in the entire charging system next to the cables is the belt, so let’s look at that first.
In fact, battery problems were the cause in over half of the cases (55%) where our patrols were called out to a car that wouldn’t start.* there are a few ways your battery might go flat or even die: Once we know the battery and the connections are good and tight we can move on: Another common reason why your car won’t start even though the battery is fine is a faulty starter motor.
Now that is all that happens when i turn the key. If the engine doesn't turn over at normal speed, then it is usually the battery or a cable connection (battery cable, grounding cable, connections at the starter) or. If the car starts right up with an alternative key, then you know you’ve got a bad key in your hands.
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. Flat, faulty or dead battery. If the the wire checks out with power then the problem is with the starter.
Similar to the starter engine, a broken or damaged ignition switch can stop your car from starting. There’s a (miniscule) chance your replacement battery is toast. This is usually the culprit when your car’s electronic accessories are fine but the car is refusing to crank.
If the battery happens to be discharged when you attempt that test, suspect a parasitic current draw in your car’s electrical system which is depleting the battery while the car is off, thus making it impossible to start the car at next use. Look for any of these signs of a bad starter: Assuming the starter has a good connection to the battery you will bypass any relais, loose wires, ignition switches (my dad did this with a large screwdriver or other metal tool.
The most common reason a car won’t start is due to a dead car battery or loose car battery terminals. Why just saying a battery is “new” doesn’t mean it is actually charged: If your car uses a separate starter relay, that’s where the second “starter” terminal is located.
Car won’t start but battery is good: That did not do anything either. Your engine will not start
If it does not get power, test the start relay in the junction block to see if it clicks when you turn the ignition switch to start. The starter makes a clicking noise as if the solenoid is not poking out to engage the flywheel. You can take it to an auto parts store and have them test it.