Question about 1994 Pontiac Bonneville

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What can keep my car from charging if i replaced the alternator and the battery and the battery terminals?

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Posted on Oct 15, 2010

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Replace my solenoid replace the negative terminal my started and then drove about 20 miles shut it off needed jump I replace the negative terminal should I have replaced the whole ground

maybe its the alternator that is not keeping the battery charged, that would be the correct order in which to check, have your alternator check it may not be working, if you have gauges in the dash or the car, check to see what the voltmeter says, watch it, about 20 inutes is all you are gonna get from the battery if the alternator is recharging the battery.

Apr 27, 2016 | Cars & Trucks

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Would an alternator make your car will not start

If your battery is fully charged, the car can start and run from the battery with no alternator at all. It might run 1/2 hr with no alternator.

A good test for the alternator is to start the car and then unhook one of the battery terminals. If the alternator is good, the car will keep on running without the battery. If the car turns off hen you disconnect a terminal, then the alternator isn't working.

But a bad alternator won't stop your car from will just not keep your battery charged or keep the motor running once the battery gets less than 12V

Feb 24, 2015 | Cars & Trucks

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Mazda Bongo Altenetor Is Not Charging.What May Be The Fault?

-Most Alternator not charge, because the brushes are won out.
But here is the basic to determine what is wrong before replace any part.

-Turn on the car let it run to normal idle then use voltmeter to check
power at battery terminal. If it's below 13 volt. The alternator need to be replace. But if it show 13.5 to 14 volt. The alternator is good. The battery is bad. It doesn't hole any charge. Need new battery.
Keep in mine. each battery is last ONLY 5 Years.

Good Luck


Aug 11, 2014 | Cars & Trucks

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I have a 1986 Cutlass Supreme. The car has set fro several years. I replaced the battery and drove it several weeks before having a charging problem. The meter showed that it was not charging. I replaced...

Taking the battery off when car is running causes voltage spikes that can damage electronics, so it is strongly recommended that it not be done. Possibly, there is a fusible link blown out. It would be between the alternator and battery, keeping the alternator from charging the battery, and keeping it from powering the electric system.

Nov 11, 2013 | Oldsmobile Cutlass Supreme Cars & Trucks

1 Answer

Replaced alternator and battery acted like not enough juice to turn over but battery fully charged changed battery terminals now no start fire

sounds like you have left a cable off the battery terminal ,some vehicles have more than one cable on the battery terminal ,also when started take the neg battery lead off and if engine stops then its a new alternator ,if engine keeps running then the fault is the battery for a slow turn over .

Dec 23, 2010 | 2000 Ford F250 Super Duty Crew Cabs

2 Answers

My alternator went out so i replaced and its working fine but my battery still keeps dying its not takin the charge from the alternator and when i charge the battery it will start and drive some distance...

then your alternator isnt functioning propperly,, basically your driving on battery power.. Keep a tester on the alternator you need at least 13.5 volts to 14.2 volts for it to work propperly.. Make sure you connect the tester leads to that of the battery terminal..

Oct 22, 2010 | 1992 Toyota Celica

2 Answers

Battery keeps draining

if your battery died while driving and the car cut off while your driving,, your problem is from your alternator!!!,, on a normal working car, you can start, remove ther battery terminals and the car would still run cause the alternator will be powering the car. In your case the alternator isnt working and the car was working on battery power therefore when the battery went dead the car cut off.. Your alternator need \s to be charging between 13.5 and 14.2 volts.. as little as 10 volts will keep the vehicle running.. I'd suggest you have the alternator replaced.

May 06, 2010 | 2003 Chevrolet Impala

3 Answers

Hello my 1992 prelude battry warning ligt stays on wat does this mean

Either your battery is bad or your alternator is not charging the battery correctly. Start the engine then remove the Negative battery terminal. If the vehicle dies you need to have the alternator replaced. If not then replace the battery.

Sep 08, 2009 | 1992 Honda Prelude

2 Answers

The alternater keeps going out. We have replaced

sometimes you are just the unlucky soul that gets bum alternators or your battery in the truck has enough juce to crank it over but is almost dead and your alternator is burning up trying to charge a battery that wont accept a decent charge. plus clean the battery terminals

Jun 22, 2009 | 1999 GMC Suburban

2 Answers

Not charging at low idle

How have you determined "not keeping up"?

We need to diagnose whether the culprit is the alternator or battery (or something else like an accessory drawing more than normal current)

With a digital voltmeter (not analog) , measure battery with car off, then compare battery at idle.
Off reading = about 12.6 - 12.8 volts DC
Idle reading must be higher than above or no charging will take place, Idle volts typically 13 - 13.5 and should increase a bit with RPM until regulator limits the increase.

Some possibilities are :
  1. bad diode in alternator (can be replaced separately in many alternators)
  2. bad regulator (built-in to modern alternators)
  3. bad connection at battery terminals (wire brush or use battery terminal cleaning tool)
  4. bad battery (shorted cell, often caused by allowing water level to go below tops of lead plates)

Oct 25, 2008 | 1987 Toyota Land Cruiser

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