Hi hello,

I don’t know jack about cars, please help!

2015 Ford Focus (yes I know trash but it’s what I got). About 4 weeks ago it was having trouble starting, could hear it trying to start and it would take about 10-15 sec before it started. Then a day or so later it wouldn’t start at all without being jumped. Battery was corroded on both positive and negative, mechanic replaced the battery.

Started fine after that for a few days, then periodically wouldn’t start, just clicked but the radio and lights all worked. There was no rhyme or reason seemingly as to when or why, sometimes needed a jump, sometimes started fine, sometimes didn’t start, waited 5 mins, started no problem. Over the course of about 10 days it got worse to needing a jump to just not starting even with a jump, towed to mechanic and was told it was the starter. Replaced the starter.

Was working fine again for the last 2 weeks, started every time no problems until Tuesday night I took the dog to the park for about 45 mins and then it wouldn’t start at the dog park. Had to get a jump, got home. Started yesterday no issues, and now this morning won’t start even from a jump but the lights and radio are still working. I’m supposed to take it in tomorrow (likely tow) and I’m hoping to understand what could be going on before I get there so I know I’m not being taken for $$$. The battery started corroding again less than a week later, not sure if that is a sign of something? Bad wiring?

Thank you 🙏🏻

  • gitdude1@alien.topB
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    10 months ago

    You could have a bad electrical connection from the battery to the starter motor. Check the battery ground connection to the engine block. Check the alternator output voltage - may not be sufficient to charge the battery. Consider taking your car to a different workshop.

    Also when your battery is in discharged state, you should put the battery on a charger (deep charge). Cranking the engine takes a lot of energy out of the battery and going for short trips won’t be enough time for the alternator to recharge it.

    Look to see if your battery has a Charge Indicator (Magic Eye) which indicates the condition or health of the battery using colour codes. e.g. Green = fully charged, Red = fully discharged, etc. The clicking sound is made by the starter motor relay and indicates that the battery is in discharged state or a bad electrical connection exists in the starter motor circuit including at the battery terminals. There’s plenty of online info explaining how to clean your battery terminals. Hope this helps.

    • Rebecksa@alien.topOPB
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      10 months ago

      Thank you. No charge indicator. Going to get a battery charger tonight and see how that does. I have an appt at a different garage on Monday.

      • gitdude1@alien.topB
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        10 months ago

        Look for a 12 volt charger with Auto-polarity detect and over-charging protection. Auto-polarity detect means that no damage will be done if you accidentally get the charger to battery connections wrong.