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High voltage changed battery. changed alternator. but keeps dying. i think its the computer but not sure or the voltage regulator. 96 eclipse

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6ya6ya
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Posted on Jan 02, 2017

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rockitman187
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SOURCE: 1972 Ford F100 Alternator/Voltage Regulator wiring

Here is what you need.

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Posted on Feb 09, 2009

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csmock132
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SOURCE: 1979 Ford Thunderbird alternator not charging

Are the connections really dirty at the voltage regulator? These tend to get corrosion on them and cause weird charging system issues. Also make sure the ground is good on the regulator.

Posted on Jul 04, 2009

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SOURCE: new alternator, but the battery keeps dying.

If you have one where the voltage regulator is located inside (integral part of) the computer...I believe you know that already.... Then you will have the symptoms you have posted. There is a "work around" for that involving the use an an older style regulator but I can't remember the exact wiring hookup. Best, just get another computer from a scrapyard.
Likely the computer is not getting sufficient voltage and that's why engine performance is off a bit. After installing the computer, fully charge the battery before starting it to avoid overloading the charging system and causing it to fail again.

Posted on Jan 13, 2010

  • 382 Answers

SOURCE: My battery keeps dying. Have replaced the battery,

Usually this happens when you have a drain on the battery somewhere. i would check the car over really good to make sure there is nothing running after you shut it off. Listen to see if you can hear the fuel pump running or anything that may draw on the battery. This kind of drain is extremely difficult to trace.

Posted on Sep 17, 2010

  • 7 Answers

SOURCE: Have 2002 jeep grand cherokee

The voltage regulator is in the PCM. If there is a problem with it, the PCM has to be replaced.

Posted on Oct 03, 2010

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2 Answers

Voltage problem.


the problem is in the voltage regulator
maximum voltage is controlled at 14.5 to 14.8 volts depending on whether the voltage regulator is in the ECM or not
but 14.8 would be max allowed any higher can damage the electronics of the vehicle including the ECM
take it to an accredited auto electrician, have it test and adjusted or the regulator replaced

Nov 25, 2015 | Buick Rendezvous Cars & Trucks

1 Answer

My 98' Mazda b2500 keeps dying. Changed the alt and battery. Someone told me it was the voltage regulator ut someone else said its built in the alternator. Can you please help me.


Keeps dying? Do you have to boost it? The voltage regulator is internal to the alternator. Is there power to the alternator to turn it on? LOts of could be's here without more info

Apr 10, 2015 | 1998 Mazda B-Series

3 Answers

Alternater wont charge battery and fusable link on starter keeps burning


Bad voltage regulator. Usually built-into alternator.
Start car and unplug battery, if it dies your alternator is dead. Get new alternator. If car keeps running, get a voltmeter and check voltage coming through - should be higher than 12v but less than 18v. Any other number means your voltage regulator is dead, cheaper to get a new alternator.

Jan 11, 2013 | 2000 Dodge Neon

1 Answer

Check engine and battery lights are on after i changed both(battery and alternater) ...the car would run but the battery will be drained what's wrong wit my 96 eclipse


If you used a new or rebuild alternator, I'd suspect that the harness from the alternator to the battery is open circuit. It happens with age and corrosion. Measure the alternator terminal voltage, engine running. Should be about 13.7v. Same voltage should appear on the battery + terminal. If not, make up a heavy duty temp cable and run it from the alt to the battery.

Oct 13, 2012 | 1996 Mitsubishi Eclipse

1 Answer

My battery keeps dieing while running. just changed the alternater three weeks ago.


Hi.

Make sure that you also replaced the battery. Battery elements may be shorted inside. That will result in battery draining even if the alternator is working.

If you have already replaced the battery check power across battery terminals with engine on and revving above idle.You should read voltage in a range of 13.5/14.4 volts when engine is revving at about 2K rpm.

If the voltage is still wrong after replacing alternator and battery check the voltage regulator connected to the alternator. Here the part.

If battery, alternator and power regulator are OK, test wiring to find out if there is a short to ground that is draining the battery while you drive. This fault is quite unusual with your symptoms. Check battery, alternator and voltage regulator first.

Regards.

Ginko

Dec 15, 2011 | 1991 Pontiac Sunbird

1 Answer

My batterie keeps dying. ive got new alternator and batterie. still keeps dying.


This is caused by a few things, either there is something on in the vehicle, the alternator is not good, the fuse that controls the alternator is bad, or the voltage regulator is faulty. Check the fuses first, then make sure that nothing is on when the key is out, and if it is neither of those, the have the alternator tested, and if it is not that, then you have a bad voltage regulator.

Mar 29, 2011 | 2001 Mitsubishi Montero Sport 4WD

2 Answers

I have a 96 ford explorer I just replaced the battery and the alternator in it. When starrted the battery lite stays on and the alternator does not charge it. Is there a linkable fuse or something I am...


Trace all of the wires that are attached to the alternator. If there is a fusible link or a broken wire you will find it. If the alternator is charging but something else is wrong the alternator will pull a steel wrench toward it. You did not mention the voltage regulator. You will find it when tracing your wires. Look it over carefully. Voltage regulators fail keeping the alternator from working. Parts stores have regulators and they are easy to install.

Mar 21, 2010 | 1996 Ford Explorer

1 Answer

The computer in our 2003 Ford focus is not having the alternator charge the battery . we have had all things tested ie.. alternator,battery,all the wires..they say it is the computer, not sure if we should...


sounds to me like you have a bad voltage regulator. The voltage regulator will shut off the flow of juice to the battery if it exceeds a level, usually 14.5 volts. So if the alternator is over charging then the voltage regulator will shut off the flow to keep your battery form dying completely and having to be replaced. Now a days the regulator is located in the alternator.

that was your education for the day. :)

If they only tested the charge the alternator puts out and it passed they most likely bypassed the voltage regulator. If the voltage regulator is bad then you will still need a new alternator.
follow the link below and read the full field testing portion for a better explanation if you dont understand my explanation.

anything else? just post it :)

http://books.google.com/books?id=3q85p56_PxIC&pg=PA84&lpg=PA84&dq=test+voltage+regulator+inside+alternator&source=bl&ots=neLFU7USZK&sig=fmzJ2GjbxqULa9pU2UHylJahYS0&hl=en&ei=r9bySvXhNo2Xtge89omuAw&sa=X&oi=book_result&ct=result&resnum=5&ved=0CBIQ6AEwBA#v=onepage&q=test%20voltage%20regulator%20inside%20alternator&f=false

Nov 04, 2009 | 2005 Ford Focus

1 Answer

1979 Ford Thunderbird alternator not charging


Are the connections really dirty at the voltage regulator? These tend to get corrosion on them and cause weird charging system issues. Also make sure the ground is good on the regulator.

Jul 04, 2009 | 1988 Ford F 150

1 Answer

WONT START ONLY WITH CHARGE


It is either going to be a wiring problem bettween the voltage regulator and the battery or the car has what is called. Voltage regulator in electronics. In this case the regulator is in the computer and not the alternator. Changing the alternator will have no effect if this is the case.Many cars have this in the computer. You need a manual to find this out for sure.

Nov 28, 2008 | 2000 Hyundai Sonata

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