Question about 2003 Chevrolet TrailBlazer

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New battery and display states battery not charging

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Have your alternator checked if your battery was weak for a while this would put big strain on your alternator .chances are your alternator is not charging.

Posted on Mar 02, 2009

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Charging system failed. Why is new alternator output ranging between 11 1/2 and 12 1/2 volts?


11 1/2 to 12 1/2 is not charging . That's less then battery state of charge , Battery stat of charge should be 12.6 volts , when charging with a volt meter you should see 13.1 to 14.1 volt at the battery posts . Is there a battery symbol lit on your instrument cluster ? Is there battery B+ voltage at the wires hooked to the alternator How to Test an Alternator

Feb 18, 2016 | 2001 Kia Spectra

1 Answer

I have an 03 Chev malibu. I just put a new battery in it. She won't start without a boost.runs fine afterwards.if I let her sit for a bit I will need a boost again..please help


New battery could be faulty or alternator not working.
If nothing happens when you turn the key,to check battery to determine its state of charge. Many starters won't do a thing unless there is at least 10 volts available from the battery. A low battery does not necessarily mean the battery is the problem, though. The battery may have been run down by prolonged cranking while trying to start the engine. Or, the battery's low state of charge may be the result of a charging system problem. Either way, the battery needs to be recharged and tested.If the battery is low, the next logical step might be to try starting the engine with another battery or a charger. If the engine cranks normally and roars to life, you can assume the problem was a dead battery, or a charging problem that allowed the battery to run down. If the battery accepts a charge and tests okay, checking the output of the charging system should help you identify any problems there.
the link below explains a complete diagnosis,
press the helpful button
Engine Won Crank or Start

Jan 19, 2016 | Cars & Trucks

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I HAVE A 2008 IMPALA I JUST GOT A NEW ALT,AND BATTERY BATTERY SAVER ACTIVE COMES ON AFTER IT RUNS A FEW MIN WHAT COULD THE PROBLEM BE


Electric Power Management
The vehicle has Electric Power Management (EPM) that estimates the battery's temperature and state of charge. It then adjusts the voltage for best performance and extended life of the battery.
When the battery's state of charge is low, the voltage is raised slightly to quickly bring the charge back up. When the state of charge is high, the voltage is lowered slightly to prevent overcharging. If the vehicle has a voltmeter gage or a voltage display on the Driver Information Center (DIC), you may see the voltage move up or down. This is normal. If there is a problem, an alert will be displayed.
The battery can be discharged at idle if the electrical loads are very high. This is true for all vehicles. This is because the generator (alternator) may not be spinning fast enough at idle to produce all the power that is needed for very high electrical loads.
A high electrical load occurs when several of the following are on: headlamps, high beams, fog lamps, rear window defogger, climate control fan at high speed, heated seats, engine cooling fans, trailer loads, and loads plugged into accessory power outlets.
EPM works to prevent excessive discharge of the battery. It does this by balancing the generator's output and the vehicle's electrical needs. It can increase engine idle speed to generate more power, whenever needed. It can temporarily reduce the power demands of some accessories.
Normally, these actions occur in steps or levels, without being noticeable. In rare cases at the highest levels of corrective action, this action may be noticeable to the driver. If so, a Driver Information Center (DIC) message might be displayed, such as BATTERY SAVER ACTIVE, BATTERY VOLTAGE LOW, or LOW BATTERY. If this message is displayed, it is recommended that the driver reduce the electrical loads as much as possible. See DIC Warnings and Messages.
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Dec 28, 2015 | 2008 Chevrolet Chevrolet HHR LT

1 Answer

What could be draining a brand new battery along with having a brand new alternator?


the alternator is not charging
problems include incorrect alternator ( internal voltage regulated as against external voltage regulated )
blown rectifier plate ( charing with ac current instead of DC)
drive belt tension
best have it checked by an accredited auto electrician

Oct 22, 2015 | Cars & Trucks

2 Answers

ITS READING MESSAGE BATTERY SAVER ON


Your probably going to need to take to a dealer for this , I don't how much you know about modern automotive charging systems . Plus it would help to have a professional scan tool ! The charging system on you vehicle is computer controlled ! The engine control module (ECM) controls the generator through the generator L-terminal control circuit. The signal is a 5-volt pulse width modulation (PWM) signal of 128 Hz with a duty cycle of 0-100 percent. Normal duty cycle is between 5-95 percent. Between 0-5 percent and 95-100 percent are for diagnostic purposes. The following table shows the commanded duty cycle and output voltage of the generator:
The BATTERY SAVER ACTIVE message will display on the driver information center (DIC) when the vehicle enters a load shed 2 event. Refer to for load shed 2 setting criteria.
The electrical power management (EPM) system is designed to monitor and control the charging system and send diagnostic messages to alert the driver of possible problems with the battery and generator. This EPM system primarily utilizes existing on-board computer capability to maximize the effectiveness of the generator, to manage the load, improve battery state-of-charge (SOC) and life, and minimize the system's impact on fuel economy. The EPM system performs 3 functions:
It monitors the battery voltage and estimates the battery condition.


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It takes corrective actions by adjusting the regulated voltage.


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It performs diagnostics and driver notification
Load Shed 2 Start
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Less Than 10.9 V
Battery has a net loss greater than 12 AH
Rear defrost, heated mirrors, heated seats cycled OFF for 50% of their cycle. The BATTERY SAVER ACTIVE message will be displayed on the DIC.
You have a charging problem or battery problem !

Feb 27, 2015 | 2006 Chevrolet HHR

1 Answer

BATTERY LIGHT ON


The battery light is on when it is not charging. The alternator will be the problem - or the small electronic item next to it - which acutally sets the power of charging according to current state of your battery and power consumption. Check also how well is your belt fitted. It should help.

Nov 24, 2011 | 1989 Nissan Maxima

4 Answers

I just purchased a 2011 Honda Odyssey When we test drove it a "Low Battery" was displayed on the screen. This was to be resolved according to the sales person. When we picked up the vehicle the...


Camp out on the dealers phone and don't letup. Tell the dealership OWNER you need it resolved ASAP. They can get manufacturer on the line to answer. It is not normal unless battery or related circuit is bad.

Nov 19, 2010 | Honda Odyssey Cars & Trucks

2 Answers

There is steam and a strong egg smell coming from the battery. What is the problem?


This is a high charging on the battery, as it is overcharged . this can be failure of the alternator rectifier or the regulator.
so use a voltmeter and confirm the voltage range to rectify the fault.
A high charging of this nature can damage the battery in the long run.

Sep 25, 2010 | 2006 Chevrolet Avalanche

1 Answer

BATTERY OVERCHARGED AND ALTERNATOR IS FINE


If you have a fully charged battery when you installed then 14 volts is way to much charge for the battery which would mean that the alternator probably has a faulty regulator and the alternator needs to be changed otherwise you will continue to install new batteries. If the battery was in an uncharged state then it is possible for the alternator to charge at full capacity to charge up the battery.

Dec 17, 2009 | 2002 Nissan Altima

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