Question about 2001 Ford Explorer Sport

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Alternator not charging

Just installed a new alternator in my vehicle and I'm still not getting any charging out of my system. I'm wondering if there is a alternator fuse/relay that I'm overlooking which could be causing the problem and if there is where is it located.

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  • chaospanther Jan 02, 2009

    I've checked the voltage drop across the positive cable nothing significant to cause a charging problem. So the battery light is inline with the charging circuit somehow. I guess I'll take out the instrument cluster and check that. I just need a wiring diagram to help move this process along.

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Check the wiring very good. THE LIGHT IN THE DASH HAS TO WORK TO MAKE THE ALT. CHARGE.

Posted on Jan 01, 2009

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How do I replace my alternator in my 2005 GMC truck


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I have a 1997 mercury mystique. Battery fully charged, turn the key, absolutely nothing. In fact no power to anything, no interior lights, nothing. Battery is brand new


Its seems voltage regulator issue.Get the vehicles charging system inspected.

To troubleshoot these issue i suggest you few helpful links with solutions:---Click the link below:----

How to inspect Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-inspect-vehicles-alternator.html

---------


How to Test Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-test-vehicles-alternator.html

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How to Service Vehicles Alternator?

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http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-alternator.html

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To confirm the problem, the basic troubleshooting is required.



From start to end troubleshooting these problems I suggest you to check the help link below and follow its procedure: -----


Mostly all types of car no start problems are discussed here with solutions:---

CAR NO START: ENGINE NOT TURNING OVER:

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---------

These will help.

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The battery needs replacing.Also it confirms that alternator is the issue too.

Check the help links mentioned below.This will help you to get the alternator tested and confirm the problem :----

Click the link :----
--------------

How to test and replace Alternator on Audi A4 Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-test-and-replace-alternator-on.html

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How to inspect Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-inspect-vehicles-alternator.html

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How to Test Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-test-vehicles-alternator.html

-------------


How to Service Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-service-vehicles-alternator.html

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How to Replace Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-alternator.html

---------------


How to monitor Vehicles charging system?

http://repairhelpcenter.blogspot.com/2011/11/how-to-monitor-vehicles-charging-system.html

-------------

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http://repairhelpcenter.blogspot.com/2011/12/car-alternator-working-intermittently.html

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My 2000 Caravan developed this problem after our hard winter so I searched and found that tapping the alternator might reveal that the brushes were intermittent. Sure enough, a slight tap caused the charging voltage to come on at around 14 Volts. A new brush assembly was under $10 on eBay and after finally getting the alternator out and the brushes replaced, re-installed all was well!

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Car wont start light are dim, car making clicking noise when trying to start and electric windows wont let up or down


Charging system issue on car.
The car battery,alternator,fuses and relays needs to be inspected.
I suggest you to check out this help links given.Click the link below to go through the procedure,so as per that you can troubleshoot the problem .
How to inspect Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-inspect-vehicles-alternator.html

--------------
How to Test Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-test-vehicles-alternator.html

------------
How to Service Vehicles Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-service-vehicles-alternator.html
------------
How to Replace Alternator?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-alternator.html

----------
How to monitor Vehicles charging system?

http://repairhelpcenter.blogspot.com/2011/11/how-to-monitor-vehicles-charging-system.html

-----------
Car Alternator making noise? http://repairhelpcenter.blogspot.com/2011/11/car-alternator-making-noise.html
---------Car Alternator Working Intermittently?

http://repairhelpcenter.blogspot.com/2011/12/car-alternator-working-intermittently.html

----------
Car Alternator Bearing Makes Grinding noise?

http://repairhelpcenter.blogspot.com/2011/12/car-alternator-bearing-makes-grinding.html

----------
How to Inspect Alternator Drive Belt?

http://schematicsdiagram.blogspot.com/2011/12/how-to-inspect-alternator-drive-belt.html

-----------
How to replace Alternator Drive Belt? http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-alternator-drive-belt.html----------- Power windows not working after car wash?

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1 Answer

Alternator


Vehicles: any failing to keep its battery charged.

A vehicle unable to charge its own battery has one of 4 problems:
(a) alternator failure
(b) voltage regulator failure
(c) battery failure
(d) wiring problem between battery and alternator/voltage regulator.

One most modern vehicles (including 2002 Lexus RX300 - 2WD and AWD), the voltage regulator is an integral component of the alternator and is not separately serviceable.

In the US, one can get a free "charging system diagnosis" from the popular auto parts chains: AutoZone, Advance Auto Parts & Pep Boys. You needn't remove any parts from the car to get this diagnostic, since they can attach a diagnostic meter to the charging system in the parking lot. This diagnostic aid will tell you exactly which component has failed - battery, alternator or voltage regulator.

In case the vehicle is immobile, one can DIY (do it yourself) the diagnosis.
(a) inspect the wiring for corrosion/loose connections/loose connectors/etc.
(b) check alternator belt/pulley - if drive belt is properly turning the alternator pulley (no slippage/misrouting/etc.), then the mechanical tests are complete, and you'll need to continue testing the electrical performance of the charging system components.
(c) first component to test: battery
DIY test 1: remove battery from car and put battery on a 120VAC automotive battery charger and charge it fully (or just check it in the car with motor off, since the car's charging system is a type of automotive battery charger).
test parameter: a fully charged lead-acid automotive battery should read 12.45 volts on a VOM/DMM
DIY test 2: disassemble battery out of car after driving it to one of the auto parts chain stores (Advance/AutoZone/Pep Boys) for a free battery test. These testers will test the battery under load, which is not possible with just a DMM.
(d) if wiring is good, and battery tests good under load, then
the failed component is the alternator/voltage regulator - by process of elimination.
(e) DIY test 3: direct alternator/voltage regulator test (car must start and idle successfully to perform this test)
Start the car, and put a VOM/DMM across the terminals of the battery. Since the car is running, you'll be reading the output voltage of the alternator and not the output voltage of the battery. The acceptable ranges for alternator/voltage regulator output are:

ALTERNATOR CHARGING VOLTAGE

Most alternators that are charging properly should produce a voltage of about 13.8 to 14.2 volts at idle with the lights and accessories off. Always refer to the vehicle manufacturer's specifications. Many Asian vehicles, for example, have higher charging voltages of around 15 volts.

When the engine is first started, the charging voltage should rise quickly to about two volts above base battery voltage, then taper off, leveling out at the specified voltage.

The exact charging voltage will vary according to the battery's state of charge, the load on the vehicle's electrical system, and temperature. The lower the temperature the higher the charging voltage, and the higher the temperature the lower the charging voltage. The "normal" charging voltage on a typical application might be 13.9 to 15.1 volts at 77 degrees F. But at 20 degrees F. below zero, the charging voltage might be 14.9 to 15.8 volts. On a hot engine on a hot day, the normal charging voltage might drop to 13.5 to 14.3 volts.

Here are the full specs for installation of the 2002 Lexus RX300 alternator - you may be able to check these specs yourself (with a torque wrench), or pass them along to your mechanic.

Note: the VIN 8th digit should be "F" for the 2002 Lexus RX300 (2WD & AWD)

2002 Lexus RX300 (2WD and AWD) - 3.0L Engine, VIN "F" SFI DOHC

Alternator

Drive belt. Tension the belt to 170-180 lbs. for a new belt or 95-135 lbs. for a used belt.
Adjusting alternator lockbolt. Tighten the bolt to 13 ft.-lbs. (18 Nm).
Alternator pivot bolt. Tighten the bolt to 41 ft.-lbs. (56 Nm).

Glossary of acronyms
--------------------------------
DIY = do it yourself
DMM = Digital Multimeter
DOHC = Dual Overhead Cam
SFI = Sequential Fuel Injection
VOM = Volt Ohmmeter

References
----------------
How to test a Car Alternator - todayifoundout.com

Alternator & Charging System Checks - aa1car.com

Dec 26, 2011 | 2002 Lexus RX 300

1 Answer

All gauges went dead while driving, lights progressively dimmed and finally engine quit.


Your alternator died. You drove until your battery died also. You need a new alternator and a new battery. You might be able to get away with just charging your battery. Do Not jump start the vehicle and let the new alternator try to charge the old battery! Take the battery to a service station for testing and a charge. Install the new alternator and then install the charged battery not vice versa and you'll be fine.

Feb 20, 2010 | 1999 Honda Odyssey

1 Answer

I need to replace the alternator on my sisters car and its not here right now and was wondering where the alternator is located so i will know if ill be able to get to it to fix it


if you have the 2.3 liter engine follow these steps...
  1. On models with anti-theft audio system , refer to Technician Safety Information .
  2. Disconnect battery ground cable.
  3. Remove lefthand charge air cooler, then righthand upper seal board, Fig. 3 .
  4. Remove condenser fan assembly.
  5. Disconnect alternator, then alternator electrical connector.
  6. Remove lefthand splash shield.
  7. Remove drive belt.
  8. Remove A/C compressor, then, with pipe still connected, position A/C compressor away from generator for easy access to alternator.
  9. Remove alternator from under vehicle.
  10. Reverse procedure to install, noting the following:
    1. Torque lefthand splash shield bolts to 70 - 95 in.lb.
    2. Torque condenser fan bolts to 70 - 95 in.lb.
    3. Torque lefthand charge air cooler nuts to 12 - 16 ft.lb.
if you have the 2.5 liter engine then follow these steps....
  1. On models with anti-theft audio system , refer to Technician Safety Information for system deactivation procedure.
  2. Disconnect battery ground cable, then remove electrical harness, Fig. 4 .
  3. Disconnect terminal B wire, then alternator electrical connector.
  4. Remove righthand splash shield.
  5. Remove drive belt.
  6. Remove A/C compressor; then, with pipe still connected, position A/C compressor away from generator for easy access to alternator.
  7. Remove alternator from under vehicle.
  8. Reverse procedure to install, noting the following:
    1. Torque upper alternator bolt to 12 - 16 ft.lb., then lower alternator bolt to 24 - 33 ft.lb., Fig. 4 .
    2. Torque A/C compressor bolts to 12 - 16 ft.lb.
    3. Torque righthand splash shield bolts to 70 - 95 in.lb.

Aug 04, 2009 | 1995 Mazda Millenia

1 Answer

Car battery problem


The alternator test will likely indicate a charging problem from the alternator that is not keeping the battery charged up.
Regardless of the alternator test, it would be best to do an electrical draw test to determine whether there is an excess drain on the battery. This can be done with an ammeter between the positive terminal and the positive battery post. This test is done with key off, all accessories off, no lights on, etc. There will be a small draw on the battery in all newer vehicles, but it should be in the order of up to 50 milliamps. If you are getting more than 200 milliamps of current draw then there is a problem with an electrical system that will drain the battery over a period of days or weeks. Once you know this is true, the electrical systems can be methodically tested.

Jan 19, 2009 | 1995 Chevrolet Lumina

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