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Car wont stay on

Had a dead battery so got a new onebut when u drive a little while the car just stops running. check engine light is on now and wont start wihtout a jump. alternator maybe?

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  • Cars & Trucks Master
  • 2,101 Answers

It is the alternator . once a car has started the alternator runs the car

Posted on Dec 10, 2012

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  • Cars & Trucks Master
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Could be alternator but check alternator fuse and have alternator tested or you could use a digital voltmeter with engine running the alternator out put should be 13.5 - 14.5 volts. if not alternator faulty or check for damaged or loose alternator wires.

Posted on Dec 10, 2012

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Posted on Jan 02, 2017

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SOURCE: car kepps stalling and wont stay running.

sounds like a fuel problem u need u check to make sure u getting fuel to your injectors but known how earlyfuel injectors are i would say theyre ur culprit here

Posted on Jun 15, 2008

  • 176 Answers

SOURCE: 91 Buick Century 2.5 L brake light on & battery light on

For the Brake light to stay on and the fluid is up...sounds like your sensor is playing dead......

For the battery to die after only (4) hours..you have a very big drain on the battery itself.....without the vehicle right here to look at would be very hard to even guess...electrical problems are a hands on chore...

I'd take it to your garage/mechainc

Posted on Jan 03, 2009

SOURCE: battary light on , engine cut off car won't crank

sounds like it's your alternator, your alternator charges your battery and runs car once it is started. if you have a bad alternator your battery light will come on, and shortly after your vehicle will die, unable to restart without a jump. I would take your battery to autozone or an auto shop to have your battery and alternator tested.

Posted on Jan 28, 2009

  • 2 Answers

SOURCE: put a new alternator in 2000 Jeep Grand Cherokee engine light on

Ive had this similar problem in the past with my 2000 Grand Jeep Cherokee. Ive found by putting the Jeep in neutral ...it started right away. Good luck

Posted on Apr 08, 2009

venexcsd
  • 1185 Answers

SOURCE: fuel pump stays running after car is turned off. battery stays dead have to get jumped to start car.

The only way the pump will run is if it has a live 12v dc supply to one side and an earth return to the other.

Most cars have the earth side of the pump grounded down to the chassis so I would go for the fact that you have a short on the loom or a faulty ignition barrel.

An auto electrician would isolate the pump wiring to see where the feed was coming from then repair the fault

Posted on May 25, 2009

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Sound like you have a bad alternator, poss bad battery too.If you can jump start it with a volt meter check voltage at battery should have above 13.5 volts, do this after you unhook jumper cables and engine running.If bad voltage reading replace alternator make sure you charge battery before starting engine with new alternator or it could damage alternator.If good voltage have battery check.Hope this helped.

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Tries to start but won't turn over, brand new battery is now dead


You need to know why the battery went dead. It is usually a bad charging situation. It could be loose alternator belt, bad alternator, or a short draining everything. A quick way to check is to turn on the headlights after you have it started.
At idle the lights should be a little dimmer than when you rev the engine. If always dim, then the alternator is probably shot.

You should have fixed the oil leak. It could have started a fire, and is cheap to fix. If there is noise now, you may have ruined the engine by running out of oil. Check the oil.

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keep in mind, your engine use both source of power to run, one from the battery and one form alternator. If the alternator is good, your engine should stay running regardless if the battery is good or bad, the alternator should keep the engine running. It sound like to me the alternator is faulty not charging your battery or keeping your engine running, even though the alternator is brand new does not mean is good. My guess I would take the alternator back and get another one. the reason why your car ran for 25 min and die it has no source of power to keep the sparks going although the alternator should keep the engine running and at the same time charging the battery but is not.

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