Question about 1992 Volvo 240

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1992 volvo 240. car will run fine if jumped but if it sits for any longer than a few hours its completely dead. put new alternator in it and bought a brand new battery, still having the same problem. Runs fine otherwise.

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  • Jessica Smith Apr 06, 2011

    but if it was the starter, wouldnt it click and all that....it just goes completely battery drained dead then starts right up with a jump. Also, my whole comment didnt get posted originally. my car fixing neighbor said the battery was being drained while the car was off by the fuses so he suggested we take the red battery connector off while car was off....this didnt work either. the car was still dead after a few hours of sitting.

  • Jessica Smith Apr 06, 2011

    I understand, that makes sense.....I wonder though, when my neighbor made this decision, the car had been battery dead and he put it on a charger for about a half hour then sent my son away in it..... a few hours later it wouldnt start again. he probably only drove it for 20 minutes before turning it off for the night. So I'm wondering if the battery didnt have long enough to fully charge back up before going dead again and thats why taking off the red connector didnt seem to help....does that make sense?

  • Jessica Smith Apr 06, 2011

    okay gotcha, p.s. alternator was used and red connector to battery was loose in order for him to remove at will.....I will check all of the things we went over and hopefully it isnt the computer like my neighbor said....he said the computer was telling it to juice the fuses and that the whole computer needed replacing. ugh, what a pain!

  • Jessica Smith Apr 06, 2011

    thank you so much Tony, I will know tomorrow hopefully what's going on!! I will do everything you said!! I appreciate it.

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  • Volvo Master
  • 3,018 Answers

Hello,
If you replaced the battery and alternator and the car is still dying after running for a while then it sounds to me like there is a loose connection or a short. Make sure the battery clamps are tight and without corrosion. Next follow the positive cable from the battery and check all connections for tightness and corrosion. Do the same with the negative battery cable. Check all the braided straps connected to the frame of the car as well. Check them all from the starter to the alternator etc. You will want to tug on the wires where they connect too. They can corrode under the insulation where you can not see. When this happens they wire will snap right off when you tug on them. If they are good a tug will not harm it. If there is a short this would be something that you would need to diagnose. A bad starter can drain on your battery as well.
Regards, Tony

Posted on Apr 06, 2011

  • 6 more comments 
  • Iron
    Iron Apr 06, 2011

    The clicking from the starter is the bendix not engaging the starter. That is one way a starter malfunctions. It can also get a short in it and drain the battery as well. so the starter would not "click" if it had a short in it. You would never know unless you have the starter "pull" tested under a load. If your car is being drained while the car is off but you disconnected the positive cable and it still drained then the battery is not fully charging when it is running and when you shut it off the battery is not maintaining enough of a charge to restart on it's own. Somehow your battery is not receiving a full charge. That is the reason for the drained battery. Assuming the alternator is good have the starter checked and check the wires as I explained above. at this point I don't believe your fuses are the problem. I am almost positive.



    Regards,

    Tony

  • Iron
    Iron Apr 06, 2011

    *the bendix of the starter engages the flywheel that is*

    Regards,
    Tony

  • Iron
    Iron Apr 06, 2011

    If your battery cables are disconnected at night, there is no where at all for the battery to discharge at. It will remain the same for quite a few days without any loss. However if your battery is not receiving a good charge and you disconnect the cables when you hook the cables up the next day the battery is still not charged properly. Like the batteries in your home for your radio or flashlight. They do not go bad until you put them into something. Because there is nothing to drain them. Same thing.

    Regards,
    Tony

  • Iron
    Iron Apr 06, 2011

    Yes that makes sense. However your alternator is what charges the battery. Your alternator is new. So if all was working correctly your battery should always be fully charged no matter how long it is running or not. But loose or corroded connections can inhibit the battery from receiving a full charge. a battery must be charged at 13.8 volts for it to be effective even though the battery is only 12 volt. It is not the time it has to charge. Somehow it is not getting a full charge. Loose connections or the starter will more than likely be the culprit.

    Regards,
    Tony

  • Iron
    Iron Apr 06, 2011

    If the alternator is used I would have that tested right away. Often used alternators fail. Also tighten that battery cable. Having it loose to disconnect will absolutely hinder the alternators ability to charge. That right there could be the problem. You should know that if the battery keeps dying and being recharged it can ware out even a new battery and it can soon fail. I wonder what makes him think the computer is failing? From what you are telling me I do not think this is the case at all. Be careful to get the truth. What he is saying about the computer shorting the fuses does not make sense at all. A computer would be an expensive fix. You can replace it if you need to but at this time I do not think it needs to be replaced. The computer is held on by four bolts and only has a few wire harnesses hoked to it that disconnect very easily. Tighten the cable and have the alternator checked.

  • Iron
    Iron Apr 06, 2011

    Tighten the battery cable then start the car. Now while the car is running disconnect the positive battery cable. If the car stays running the alternator is probably OK. If the car dies then the alternator is bad. An alternator should run the car by itself. the battery has one purpose, to start the car. The alternator does the rest.

  • Iron
    Iron Apr 06, 2011

    So here are the steps I recommend . A little recap if you will.

    1. Tighten the positive cable and get the car running.
    2. When the car is running pull the positive (red) cable off the battery post. If the car dies get the alternator exchanged for a working one. If it stays running for a while then the alternator is probably good. If the alternator is bad then replace it and also follow the following steps.
    3. Turn the car off and tighten up the positive (red) battery cable and start the car or get it running and take it for a 10 minute drive. This will let the battery charge real good under a load. Since at this point you know the alternator is running then the battery should charge.
    4. When you return to your destination turn the car off and wait for one or two hours.
    5. Now start the car again. if all is well the car will start on it's own and problem solved. If not then check have the starter tested for shorts and check all wire harness for good connection and make sure there is no corrosion.

    If you have any further questions feel free to ask me. that is what I am here for. Good luck to you.

    Regards,
    Tony

  • Iron
    Iron Apr 06, 2011

    Your very welcome.

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