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My C3 has just stopped twice in 3 weeks after travelling approx 15 miles, AA said could be loose connection, battery was only 7 volts, alternator seemed ok, do you think a new battery ?
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you can get pop up trouble light going off if the battery is weak or even low ,, have the battery LOAD tested, you could have one cell bad, so it would show 12 volts but not actually the required amps necessary, this would make the alternator work overtime, which would draw from the power it needs to actually run the vehicle
It is almost definitely a bad alternator, but could also be a limited number of other things. A bad battery terminal could cause this problem as well or other loose or corroded connections. As for your 12 volt reading on the alternator, I should explain a little about electricity. If electricity travelled down a highway, the number of lanes would be the voltage and the speed limit would be the amperage and the wattage would be lanes multiplied by the speed limit. 12 lanes travelling at 2 miles per hour aren't getting anywhere fast. Also, a car battery's charge voltage slightly above its' output voltage, so it should be roughly 13.4 volts up to about 15 volts.
This has happened to me TWICE in the past 4 months. I had Lexus road side service come out both times to check the car out. Each time the battery was totally dead. The road side mechanic said that if the car is not driven at least 15 minutes nonstop a day, the battery runs dead as there are so many draws from the car on the battery. If you do alot of stop and start driving like I do, that isn't enough to recharge the cell of the battery, it must be non stop driving time. Recommend that I get a 1.5 tricky charge device an hook to battery at least one night a week to keep the battery charged. This is really frustrating with such a new car. I've spoken to other owners of other model luxury cars and no one has had this problem.
an alternator has no certain life. it all depends on the load and etc, when running it should read at least be14-15 volts at battery, when off it should be at least 13-14 at battery. after a while the bearings or regulator in alternator may go but, this is life.
The bid cable on the starter may have had another wire on it that the alternator charges the battery threw,it may not have got reconnected,or the fusible link in that wire may have burned into.Or plain and simple the alternator went out.Check these things out and remove the alternator and have it check out to see if it is working properley.
Your alternator is going bad. It should only put out 13-14 volts and therefore is overcharging your battery. This causes your battery to get a dead cell. If you replace the alternator and battery, make sure you check the cables for any shorts.
try haviing your alternator checked advance auto parts can check it while its on the car and the can check the battery too. if thats not it it may stall due to a loose battery connection or a loose ground strap. if it stalls and everything turns of (electrical) it may be a connection or ground strap.
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