Question about 2000 Ford Windstar

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Generator Light Replaced battery and light did not come on. The next day it came after traveling for about 30 minutes. What else should we check? Battery cables, alternator, belts, etc.

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Alternator can have bad brushes in it. They are not hard to replace if autozone sells them.
Otherwise it can also be a fuse which leads from alternator to battery.

Posted on Jul 09, 2008

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2004 Nissan Altima 3.5L BATTERY LIGHT went on during 15 minute drive. Next day car "died" while idling after a 20 minute drive. BRAKE WARNING LIGHT & BATTERY LIGHT on prior to full electrical failure.


Start with checking the alternator voltage with a multimeter. With the car off check the voltage in the battery which should be holding 12v charged less if flat of course then start the car and test the battery again. If the alternator is good you should be getting a reading of 14 to 14.5 v if it's the alternator it'll A) not put any charge into the battery or B) be a very low voltage being anything under 13.5 v

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The battery light means the alternator is not charging the battery. The charging system would need to be checked out when the light is on.

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You should first fill the transmission fluid to the correct with genuine Nissan Matic J Transmission fluid and replacing the transmission input shaft speed sensor. Its costs approximately $113 at the dealer for the sensor.

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1990 Ford Thunderbird SC Battery light is on most of the time. Mechanic said battery is overcharging but doesn't know why. It gets very warm to the touch after about 20-30 minutes of driving. Could...


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I left my gas cap off after fillig upand the next day and the check engine came on.


The check engine light will come on when you leave the gas cap off or don;t put it back on securely. If you have replaced it, just disconnect the battery for about 15 minutes and the light should go off. If it comes back on then there is a different problem that needs to be addressed.

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1998 Dodge Avenger Battery drained. Auto repair shop tested alternator and said the problem is the battery. I had the battery tested and recharged it was OK. Next day, internal lights work in the car, not...


I'm not sure where you got your alternator tested, but recently I was in the same situation with my 1998 avenger and the alternator was at fault

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1 Answer

First my ba


try disconnecting your battery ground for 30 seconds and see if your check engine light goes away. If not, i'm sorry to say but its gonna have to get scanned, it could be coincidentally so many things.

Jul 09, 2009 | 1999 Acura CL

1 Answer

Alternator problem?


check battery voltage with engine off. should be @ 12.5v
check with engine running at about 1500 rpms. It should be @ 14 volts. If yes, it is ok. I think you are ok.
Please rate higly if htis helps

your system is more sophisticated than Sars can handle.

here's how it works.

The charging system consists of a generator which generates current to supply the vehicle electrical system and maintain the battery in a charged condition.
The generator is driven by the accessory drive belt. For additional information, refer to Section 303-05 . When the engine is started, the generator begins to generate alternating current (AC) which is converted to direct current (DC) internally. The DC current is controlled by the voltage regulator (located on the back of the generator), and then supplied to the battery.
The charging system voltage is controlled by the powertrain control module (PCM). The generator charges the battery and at the same time it supplies all the electrical loads that are required. The battery is more effectively charged with a higher voltage when the battery is cold and a lower voltage when the battery is warm. The PCM is able to adjust the charging voltage according to battery temperature by using a signal from the intake air temperature (IAT) sensor. This means that the voltage setpoint is calculated by the PCM and communicated to the regulator by a communication link.
The PCM simultaneously controls and monitors the output of the generator. When the current consumption is high or the battery is discharged the system is able to increase the idle speed.
To minimize the engine drag when starting the engine, the PCM controls the generator. The generator does not produce any output until the engine has started. The PCM then progressively increases the output of the generator.
The PCM controls the operation of the charging system warning indicator in the instrument cluster. The PCM is therefore responsible for turning the warning indicator off after the engine is started and illuminating it under fault conditions (when the generator is not generating the correct amount of current with the engine running). The warning indicator will also be illuminated by the PCM at key - on engine off and stall conditions.

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Try disconnecting the battery (unhook on of the terminals) wait for like 15 mins, hook the terminal once again and start the car. I also own a 2003 Jetta and once my engine light would come on after 2 mins of driving. Disconnecting the battery is like resetting the computer and hopefully the sensor.

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1 Answer

Battery is new and doesn't seem to keep a charge.


check dome light, glove box light, trunk light. anything that might have power to it all the time.
Greg

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