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There are 19 articles on this title. You are reading the article ranked and rated #7 by Helium's members.

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Engine Repair

How to diagnose a no-start problem

If you're anything like me, you started with a string of barely running cars, slowly moving up the chain until you were able to afford something nice. But even with a reliable car sometimes there's problems. It's never when you expect it, and always inconvenient. So what do you do when your car doesn't start? Before you call a tow truck, there are a couple of things you need to check. To start with, you should always have basic rudimentary tools and emergency supplies in your vehicle. Below is a quick troubleshooting guide for a few common problems you may be able to fix on your own.

Turn the ignition key. Does the starter turn over the engine? If not, you may have one of three problems; no power, a bad connection, or a bad starter. When you turn on the ignition do the lights on the dash come on like normal? If they don't you have no power. This is most likely either a dead battery or a broken connection. Do the lights come on, but dim, and fade out when you try the starter? Same answer. your battery is likely dead, or a connection is loose cutting your power down. First, take a look. Did you leave the lights on? It happens... Just turn them off and skip ahead to the jump start. Ever seen a guy looking under his hood like he has no idea what to do? Now it's your turn. Open your hood and visually inspect the battery and cables. Move them a little on the battery posts. Is the connection tight? Follow the wires and look for any breaks or disconnected wires. Remember, be careful when tightening battery post clamps. If your wrench shorts out touches both the positive post and another metal part like the frame, body, or engine, you will see sparks. This may result in injury or damage to your vehicle.

If all the connections are secure, try jump starting your vehicle. See your owners manual for specific procedures, recommendations, and safety warnings. You should always have a set of jumper cables stored in your trunk, just in case. If your car starts with a jump, drive it to the nearest auto parts store. They will usually test your alternator for you free of charge, in hopes of selling you a new one. That way you will know if you need a new alternator, or just a new battery. If the alternator is good, and the battery is charging, run the car for 30 to 60 minutes. Shut it off, and try starting it again. If it works, you're good. Be sure to see the manufacturers recommendations for your battery. It may need water, or have a recommended replacement period. If none


Below are the top articles rated and ranked by Helium members on:

How to diagnose a no-start problem

  • 1 of 19

    by Dean Holmes

    Likely the most frustrating occurrence you can have with your vehicle...turning the ignition key over, and nothing. Y... read more

  • 2 of 19

    by Mike Webb

    How to diagnose a no-start problem: Does the engine crank over when you turn the key to start? If the answer is n... read more

  • 3 of 19

    by Maxwell Payne

    We've all experienced the frustration that comes when we get in our car, turn the key, and realize the car won't star... read more

  • 4 of 19

    by Clayton Montgomery

    The first step in diagnosing a no-start problem in your vehicle is to establish whether your engine is "cranking" ... read more

  • 5 of 19

    by William Remski

    There are several possible reasons that a car won't start. First, the battery may be drained. Turn on the ignition.... read more

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How to diagnose a no-start problem

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