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Why do the lights dim and voltage drop when slowing down or braking hard in 94 sentra bad alternator?
It may be the battery, if the car is running the alternator should still be good. The battery may not be holding charge and supplying your car with reserve power. I would take you car to the autoparts store and have them test the electrical system. They will do this for free and tell you if the alternator and or battery is bad.
What else can I help you with?
When gassing an engine the lights grow brighter but when idling the lights dim?
Your voltage regulator is shot. It is integrated in your alternator. You need to replace the alternator.
Where is the Voltage regulator on a 89 Camaro?
The voltage regulator on a 1989 Chevy Camaro is inside of the alternator. If you are having issues, such as flickering lights, you might have to replace the entire alternator.
Why do you get low voltage when you put on the brakes?
The brake lights come on. The alternator should maintain voltage (14.2) unless the alternator is failing or the battery is nearing end of life.
Why would dashlights brighten upon acceleration?
It means that the voltage is going up as the alternator spins faster. 4 posibilities; 1 Your battery is dying and the alternator is working harder to charge it when you accelerate. The lights are comming up to full brightness. 2 You have a bad connection at the battery terminals or frame ground and the battery can't hold the voltage down. The lights are receiving too much voltage and are more likely to fail. 3 The voltage regulator on the alternator is failing and overcharging the battery. The lights are receiving too much voltage and are more likely to fail. 4 The battery needs water. The lights are receiving too much voltage and are more likely to fail.
Why do your lights dim when your RPM decreases?
Because the voltage drops. Depending on what is the problem changing the battery or alternator will help.
Why does my Vauxhal astra estate dash board lights flicker with the new alternator fitted and the engine running?
The alternator may have a faulty rectifier or faulty voltage regulator
Why do the headlights in a kia sedona 2002 keep blowing?
Voltage too high - bad voltage regulator on alternator. I bet your dash lights are very bright also.... Change out that alternator before you start popping other bulbs....
Why would the Dash and Head Lights flicker on a 2002 Saturn L-300?
Check the alternator output, you may have a failed voltage regulator or bad brushes in the alternator resulting in an oscillating voltage value. This assumes that the flicker is relalted to engine rpms.
How can you tell if its the battery or alternator that's not working on a car?
Start car. Turn on all lights, blower etc., that you can. Read voltage across battery terminals. If voltage is 13.5 or more then your alternator is okay. This assumes you have clean connections, good cables.
Your 92 eldorado starts to choke out when you turn your lights on?
Sounds like it could be low voltage Battery charged? Alternator working?
Why does the voltage drop when you turn lights on in a 1966 dodge?
In all probability you have a bad battery or a loose connection. If the voltage drops with the motor running, you probably have a bad alternator (or generator) or regulator.
How does an alternator produce different amps?
It depends on the load and the voltage. In an automobile, a battery will typically have a voltage of about 12 Volts. If the engine is not running and you turn on the lights, the lights will start drawing current from the battery and the voltage will drop by a volt or so, depending on how strong a charge the battery has. An alternator will produce in the neighborhood of 15 Volts. If it is trying to push current into a system with a fully charged battery, it will only be able to push a few amps. If the voltage in the battery drops, the alternator will be able to push more amps. A completely dead battery will draw the most current (amps).
