Question about 1996 Toyota Camry

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How to I increase the voltage coming/going to Alternator on car to 17v?

I want to know how to increase the voltage coming out and or in the alternator to 17Volts so that I can use less amps and try a few new things. Please Help ; Thanks, Troy K.

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  • Toyota Master
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Not possible as the regulator is set at 15.5 max volts or else the battery boils and is destroyed.. If you want to increase the voltage I suggest you use an 12-24volt inverter same as what trucks use and resistor(variable) the 24 volts back to the 17 you are after

Posted on May 01, 2013

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Make sure you don't have a faulty fuel injector, this may be the cause, also use a can of carb spray and spray around the intake gasket to check for leaks, if one is present you will notice a diff in the engine sound when the spray hits it.

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You will need to replace that plug, the Toyota dealer has repair connectors to fix this, contact your local dealer, u will need the plug repair kit or the alternator will quickly malfunction from a type of "Jerry" rigged connections

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How do i check my alternator to know it is charging


Use a dc voltmeter and check the voltage at the battery terminals. It should read around 13 to 14 volts. If it is 12 volts or less, the alternator is not putting enough voltage (power) and should be rrepaired/replaced.

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Charging System for 2000 GMC 1500 Sierra 4x4


measure battery voltage while engine running good is 13V to 14V then over charging is 17V to 18V DC
if ok battery gauge could be defect
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Feb 23, 2014 | 2000 GMC New Sierra 1500

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ALTERNATOR NOT CHARGING


have an accredited auto electrician check the out put of the alternator . Check the condition of the drive belt and the tension of the belt. place a multimeter across the battery terminals and it should read battery voltage . Increase rpm to around 2.000 rpm and the reading should go up to 14.5-15.5 volts. It doesn't move I would suspect a faulty regulator or diode pack in the alternator.

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Alterator on 2000 mercury cougar putting out almost 17v


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My 2005 Pontiac Sunfire has had several problems over the past couple of months. When I was driving all my gages went to zero when I would start to break. After I started moving again they would go up....


Your car's symptoms (voltage fluctuations under load that shouldn't happen) seem to
strongly indicate that your voltage regulator has failed. The voltage regulator is the component
that regulates voltage coming from the alternator, and which is supplied to the rest of the car.
Your new belt tensioner indicates to me (and should have to your mechanic) that the
alternator and/or voltage regulator weren't able to operate properly, and a faulty belt tensioner
has killed more than one car's alternator/voltage regulator.
Your do not need new headlights. Do fix the turn signals.

In the 2005 Sunfire, the voltage regulator is an integral component of the alternator, and is
not separately serviceable. So your 2005 Sunfire needs a new alternator.

2005 Pontiac Sunfire Alternator - Duralast Part Number: DL2305-15-4 $199.99 available at:
http://www.autozone.com/autozone/parts/2005-Pontiac-Sunfire/Alternator/_/N-jmqtpZ93xme

The national parts chains (Advance Auto Parts, AutoZone, Pep Boys) will (for free) administer
a "Charging System Test." Which will telly you for sure that your alternator/voltage regulator
is bad. Do this before replacing alternator, since its a pricy part in the 05 Sunfire.

Just in case, Here's the 2005 Sunfire manual entry on (a) Diagnosis & testing the alternator, and
(b) replacement of the alternator

Alternator replacement is a do-it-yourself project, though you may need to get a
"Serpentine Belt Kit" on your favorite parts store's loan-a-tool program to remove/re-install the serpentine (drive) belt.
======================================================================
Diagnosis & Testing - 2005 Pontiac Sunfire Alternator


Alternator Load Test

1. With the engine running, turn on the blower motor and the high beams ( or other electrical accessories to place a load on the charging system).

2. Increase and hold engine speed to 2000 rpm.

3. Measure the voltage reading at the battery.

4. The voltage should increase at least 0.5 volts from the voltage test. If the voltage does not meet specifications, the charging system is malfunctioning.
NOTE
Usually under and overcharging is caused by a defective alternator, or its related parts (voltage regulator), and replacement will fix the problem; however, faulty wiring and other problems can cause the charging system to malfunction. Many automotive parts stores have alternator bench testers available for use by customers. An alternator bench test is the most definitive way to determine the condition of your alternator.




Alternator No-Load Test

1. Connect a tachometer to the engine.
CAUTION
Ensure that the transmission is in Park and the emergency brake is set. Blocking a wheel is optional and an added safety measure.


2. Turn off all electrical loads (radio, blower motor, wipers, etc.)

3. Start the engine and increase engine speed to approximately 1500 rpm.

4. Measure the voltage reading at the battery with the engine holding a steady 1500 rpm. Voltage should have raised at least 0.5 volts, but no more than 2.5 volts.

5. If the voltage does not go up more than 0.5 volts, the alternator is not charging. If the voltage goes up more than 2.5 volts, the alternator is overcharging.
NOTE
Usually under and overcharging is caused by a defective alternator, or its related parts (regulator), and replacement will fix the problem; however, faulty wiring and other problems can cause the charging system to malfunction. Many automotive parts stores have alternator bench testers available for use by customers. An alternator bench test is the most definitive way to determine the condition of your alternator.


6. If the voltage is within specifications, proceed to the next test.



Voltage Test

1. Make sure the engine is OFF , and turn the headlights on for 15-20 seconds to remove any surface charge from the battery.

2. Using a DVOM set to volts DC, probe across the battery terminals.

3. Measure the battery voltage.

4. Write down the voltage reading and proceed to the next test.



Removal & Installation - 2005 Pontiac Sunfire Alternator


2.2L (VIN 4) Engines

1. Before servicing the vehicle, refer to the precautions section.

2. Remove or disconnect the following:

Negative battery cable

Accessory drive belt

Alternator mounting bolts

Alternator electrical connectors

Alternator





To install:

1. Before servicing the vehicle, refer to the precautions section.

Alternator. Torque the upper bolts to 37 ft. lbs. (50 Nm) and the lower bolt to 22 ft. lbs. (30 Nm).

Alternator electrical connectors

Accessory drive belt

Negative battery cable





2.2L (VIN F) Engines

1. Before servicing the vehicle, refer to the precautions section.

2. Remove or disconnect the following:

Negative battery cable

Accessory drive belt

Alternator mounting bolts

Alternator electrical connectors

Alternator





To install:

1. Install or connect the following:

Alternator. Torque the bolts to 16 ft. lbs. (22 Nm).

Alternator electrical connectors

Accessory drive belt

Negative battery cable

Sep 05, 2011 | 2005 Pontiac Sunfire

1 Answer

New battery keeps going flat


Sounds like you may have a bad alternator. Put a volt meter across the battery posts. A fully charged battery should read 12.6 volts. Then start the engine and the voltage should increase to 13.5 to 15 volts. If you do not get this increase in voltage, then the alternator is not charging, which can be either the wiring to the alternator or the alternator itself being bad. Good luck :O)

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Good luck!

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There may be no loss of voltage, but is there a surge of voltage?

As for the battery itself when tested, it should read 12-12.5Volts across the
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