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Car will not stay running,unless it stays jumped?

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Alternater

Posted on Nov 21, 2014

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  • Cars & Trucks Master
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You don't have a good battery then, or you have a bad connection at one of the battery terminals. A good, well charged battery even without a good alternator, will keep an engine running for a pretty long time. Up to a few hours, as long as the headlights or other major draws of power are not used - with lights on, you are only talking in minutes before the battery is run too low to supply power.

So that's why I say you maybe have a dead or very low battery. But if the alternator is not keeping the engine running after it is started, then you have both a defective charging system AND a run down battery...or you just had a poor connection all along. So, double check your battery connections first. Nice if you had a voltmeter, you could easily check the battery.

Posted on Nov 21, 2014

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1st most newer car cars have a timer delay that helps light the area you are in for a couple of seconds. You may have had the knob turned all the way up on the turn signal switch. The same thing will happened if this switch is turned all the way up, the interrior light will stay on. Turn the lights on with the switch and see if the fog lights come on, do this without the car running.Trun the lights off,see if the fog lights stay on then go out after a while.if so you have a delay on the fog lights or relay. You may need to replace the relay only. Part $ 15 trace fog light wiring to relay usually under hood away from water sources.......runjoe

Posted on Mar 02, 2009

  • 21 Answers

SOURCE: car wont stay running unless foot is on the gas

Withoutknowing if the check engine light is on it could be a variety of things including but not limited to the o2 sensor, throttle positioning sensor, and the MAF and MAP sensors. Best diagnosed by using an OBDII scanner to scan for codes. If no codes are present I would then check for the pressure coming from the fuel pump to make sure it is still functioning.

Posted on May 21, 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

  • 295 Answers

SOURCE: 1999 passat starts but wont stay running unless i

Do it run rough. You probable have a misfire. possible leaking injector. I have seen many ignition coil fail on those vehcles.

Posted on Jul 07, 2009

edwardjwoods
  • 372 Answers

SOURCE: my car wont stay running unless i keep a battery

Alt not charging.....

Posted on Jul 25, 2009

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