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Two options. Either the alternator is bad (voltage reg), or the computer is no good. Turn the head lights on (at night). If thy flicker, like high beams, then the computer is fried. C.E.

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โˆ™ 2006-08-03 03:09:34
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Q: Why is the battery gauge on the instrument panel of a 1996 Ford Probe reading HIGH whether the car is idling or in motion?
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Can a bad alternator cause a battery to be unchargable?

Yes, it can ruin the battery by overcharging it. If you are reading between 13.5 to 15.5 volts at the battery with the engine idling then more than likely the alternator is good and you battery has a dead cell. A fully charged battery will read 12.6 volts with the engine not running.


Symptoms of Ford Escape alternator failure?

unstable idling and battery indicator lights on.


We cleaned the battery terminal and now the car will not idle properly?

Cleaning the battery terminals had nothing to do with the engine not idling properly. Just a coincidence.


What should the voltage be checking battery with car running?

13.5 to 15.5 volts with the engine idling.


When idling is car battery charging?

Yes, as long as the charging system is is good working order.


Does a screensaver conserve battery life?

No, it doesn't. When your phone/laptop/tablet is idling and a screensaver is running, it uses CPU and it doesn't conserve battery life.


Why would a Battery light comes on when idling?

The charging system is not working. You need to take it to a shop and have it tested.


What is the normal oil pressure gauge reading for a 2008 Tahoe Hybrid?

Hot, idling in drive, 20 lbs.


Can you add miles to your car by idling?

You can add engine wear but the reading on the odometer will not change since the sensor for the odometer is located at the output end of the transmission or transaxle, and therefore only gives a reading when the vehicle is moving (or when the wheels are spinning, if you are on ice or up on a hoist). So, no, you will not add mileage by idling.


Low oil pressure reading when idling for a 1986 fiero?

A low oil pressure reading when idling for a 1986 Fiero is normal. As long as the oil pressure goes back to normal when the car is being driven, there should be no problem. If it is not, then the oil pressure sensor or the oil sending unit should be looked at.


Can an alternator that has a built in voltage regulator show good when the regulator is bad?

If the regulator is bad, the alternator would have a low charge or a high charge or no charge at all. With a good battery that is fully charged (12.68 volts) and the engine warmed up and idling with no accessories on, you should get a voltage reading at the battery of 14.2 v (plus or minus .2 v).


Is it the battery or the alternator that is bad on a zx7r that shows 11.77 volts while idling at 3000?

Unless the battery is shorted or sulfated and will not take or hold a charge, most likely the alternator is bad


if your car battery has a dead cell will it die while idling?

As long as your car engine is running, it should be OK. An exhausted battery will only become a problem when you try to start the car.


How do you know if your alternator is gone?

easy...all you have to do is to remove either one of the battery terminals,while the car is idling...if it dies,then it is not charging


How you can know if your alternator is charging properly?

Check the voltage at the battery posts with the engine idling. It should read from 13.5 to 15.5 volts.


How do you fix the idling on a 2001 Ford Focus?

my idling on my 2001 ford focus is not idling correct, tried to adjust idling but there is no screw or way to adjust why?


How many volts should a battery read on a 1995 corvette?

12 volts with the engine off. 13.5 to 15-5 volts with the engine idling.


Why would your car volt amps drop while you stop at a light?

Engine is idling too slow or the alternator is weak. Or battery is getting tired.


What would cause excess fuel usage surging lagging whether running or idling and a drop in battery needle with each lag?

A dirty or clogged air filter would cause excessive fuel consumption, and it could cause the engine to surge, but I'm not sure about the drop in your alternator guage.


How do you tell if the alternator is outon a 1999 kia spehia?

A quick way to tell if there might be a problem with an alternator is to remove the positive side battery cable from the battery while the vehicle is idling. If the engine dies, odds are there is an alternator problem.


Will a lower cold cranking amp on a car battery affect the idle speed rpm Mazda 2.0 sport 2007?

No. Battery cranking amperage has nothing to do with engine idling. There are a lot of potential issues from vacuum issues to ignition.


Why does a Chevy S10 make a light winding noise when idling and the battery gauge drops when you let off the accelerator?

sounds like the alternator is going bad.


Your 89 Jeep Cherokee is dead you charge the battery but after a while car will start idling rough then shut off or if I shut the car off it will completely die again what is wrong with your jeep?

Bad Alternator and have your battery checked for bad cells


Why new battery and alternator won't hold a charge when car is running?

The alternator does not hold a charge. It charges the battery. If it will not charge the battery then either the alternator is defective, battery is defective, or the connections are corroded or loose. You should read 13.5 to 15.5 volts at the battery with the engine idling. Check it with a DC volt meter. If you get less the alternator is defective. If you get much more the voltage regulator is defective.


How hot is normal for a new alternator to get when idling for an hour after replacing it and the battery on a 1993 Buick Skylark?

They will run somewhat hot while charging; if you put your battery in discharged however, that makes the alternator work much harder. A alternators job is to maintain the charge in a battery not to charge a discharged battery.Keep a eye on it, it will probably be OK once the the battery is topped off.