Question about 1997 Ford Aerostar Extended

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My vehicle will not hold a charge and the alternator and battery test fine

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Voltage regulator.....ALMOST POSITIVE, have it tested, they are contained internally in the alternator, any auto parts store should check (ask them to bench test it) it for free, provided you take the alternator to them.

Posted on Dec 14, 2008

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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

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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?

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

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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


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Car Alternator Working Intermittently?

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

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Car not starting or turning over indicates towards multiple possibilities. It can be issue with battery or weak battery. But if battery checks out ok, then it can be starter issue or faulty alternator or problem with low fuel pressure or no spark at spark plugs due to dirty spark plugs or faulty ignition coil or injectors getting cracked or dirty and needs to be cleaned.


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:

http://alltypesofpartsreplacing.blogspot.com/2012/11/car-no-start-engine-not-turning-over.html

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These will help.

Thanks.

Dec 10, 2012 | 1997 Mercury Mystique

1 Answer

I have a 98 Toyota Avalon that recently had a dead battery at the airport. When the airport lot attendant jumped the car, it cranked weakly for a second and then nothing happened. Numerous jump attemp


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

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


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

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How to Inspect Alternator Drive Belt?

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

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How to replace Alternator Drive Belt?

http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-alternator-drive-belt.html

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How to change Alternator on Peugeot

http://www.howtorepairguide.com/2012/11/how-to-change-alternator-on-peugeot.html


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Nov 28, 2012 | 1998 Toyota Avalon

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

The car was running fine one day then the next day it would not start. We tried jumping it thinking the battery might be dead and it still would niot start. The car has power until we take the jumper...


Sounds like you have a toasted battery or alternator. Have you performed a load test on the battery? Have you tried to charge the battery? First remove the battery and charge it externally from the vehicle. If the battery won't hold a charge, or won't hold a charge of 12 volts, replace it. Once you have the vehicle started, test the operation of the alternator. It should be putting out at least 13 volts back to the battery to keep it charged - if it is putting less than 13 volts or more than 16 volts, replace the alternator.

Nov 01, 2011 | 2005 Chevrolet Malibu

1 Answer

Alternator is not charging the battery. The battery has been tested & will hold a charge. The alternator has been tested and is also good putting out 75 amps. I've checked the connections, all appear...


thats not always a great way to diagnose alternator problems if you have alot of electrical components on your vehicle the alt will not run the vehicle,also the alt. is not going to charge your batt. its job is to maintain your batteries life, if you do not have a load tester to test your batt. have some one at a autoparts help you most are free of charge to check.. goodluck

Mar 10, 2010 | 1989 Ford F 150

1 Answer

Loud clicking sound and won't turn over


possibilities are connections at battery corroded or loose battery dieing not holding charge alternator not charging battery or starter shorted out or connection problem try to boost vehicle if starts have battery /alternator tested for proper working order

Oct 27, 2009 | 2002 Chrysler 300M

2 Answers

I replaced the battery 3 weeks ago and everything has been fine. My wife drove around everywhere on Friday. She did not drive the van yesterday. It is now Sunday night. My wife went out ot start her van...


Your alternator is going bad. It should only put out 13-14 volts and therefore is overcharging your battery. This causes your battery to get a dead cell. If you replace the alternator and battery, make sure you check the cables for any shorts.

Aug 31, 2009 | 1991 Ford Aerostar Extended

5 Answers

Battery does not stay charged has to be jump started each time I go to start the vehicle


There is a defect in the charging system...battery juice that is being used is not being replaced. This is typically caused by a faulty alternator or voltage regulator. Take the car to an autoparts store and have the alternator tested. Most parts stores will test the alternator at no charge. If the alternator is defective it will have to be replaced. Hope this helped you. Best wishes.

Jul 22, 2009 | 2004 Ford F150

1 Answer

Battery dies while driving, I pulled the alternator (which is a pain) and had it tested..its fine. battery still wont hold a charge..btw battery is fine. had it replaced too.


Alternator may test fine on bench, but not in car. Your PCM may also not be switching the alternator correctly. Test for how may volts you are getting at the battery, if it is battery voltage, or a little above, you most likely need an alternator.

Jun 05, 2009 | 1995 Mazda Millenia

3 Answers

Won't hold a charge


its the battery. the battery holds the charge and the alternator charges it so when you jump the car it stays running because you alternator is providing power when you shut the car off you have a bad battery that isnt holding the charge needed to start it again.

Mar 31, 2009 | 2003 Buick Rendezvous

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