When is dimming lights at idle considered normal?
When the vehicle speed is above approximately 24 km/h (15 mph), the engine/generator RPM is high enough and the generator current (amperage) output is sufficient to supply the current (amperage) requirements of the vehicle as originally equipped and recharge the battery. Dimming lights at idle may be considered normal for two reasons: 1.
What does it mean when your car idles for a long time?
The idle of a car engine is kind of like a human heartbeat: You can tell what shape it’s in just by listening. Problems with idle speed —things like slow idle, fast idle, rough idle, or stalling after idling for a few seconds—are symptoms that something is wrong with your engine.
Why does my car voltage drop when idle?
• At idle, vehicle electrical loads may exceed the low speed current (amperage) output of the generator and when this happens the shortfall comes from the battery. This will result in a drop in the electrical system voltage as the battery delivers the additional electrical current to meet the demand.
What causes the idle speed to go up or down?
The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. 2. Check Engine Light comes on
What happens when the idle control valve fails?
When the idle control valve fails it can cause all sorts of issues with the vehicle, and in some cases may even render it undrivable. Usually a bad or failing idle control valve will produce a few symptoms that can alert the driver of a potential issue. 1. Irregular idle speed
Why does my Subaru Impreza stall when idle?
When it did idle, it idled low and was unstable often dipping to just a couple hundred RPM. I took the advice of Zecher here and cleaned out the TB. It was a work night and I didn’t want to risk not having the car drive-able the next day so I didn’t remove the TB to clean it.
Why is my Generator low at idle speed?
As the generator’s internal temperature rises, the generator’s output capability is reduced due to increased electrical resistance. Depending on the vehicle application, generator current (amperage) output at engine idle speeds of 600-700 RPM can be as low as 35 percent of the full rated output.
What to do if your Harley loses voltage?
Testing the Voltage Regulator If you noticed your Harley losing voltage or suffering from voltage regulator symptoms, it’s possible to test the regulator for bleed. Voltage is only allowed to travel in one direction, from the stator to the battery, when the regulator is working properly.
How can I check the voltage on my Street Glide?
Pull the headlight out and hook it to a battery charger. Clamp the negative leed and touch the positive leed and if it’s good it will light up. If it lights up it will do so on low beam. You need to check your charging/ output voltage with a Multimeter-as already mentioned by Bowden.
Why does the battery shunt the voltage on Street Glide?
Thanks again for such a great site! Yes, once the battery is fully charged the regulator will shunt the voltage it does this for 2 reasons 1 the battery does not need the voltage 2 by shunting it gets rid of heat to protect itself Blue Wide Glide, Fisherking and zoob2 like this.
Testing the Voltage Regulator If you noticed your Harley losing voltage or suffering from voltage regulator symptoms, it’s possible to test the regulator for bleed. Voltage is only allowed to travel in one direction, from the stator to the battery, when the regulator is working properly.
What causes electrical problems on a Harley Davidson?
A Harley Davidson can experience electrical problems at any time, but there can be a wait for a service appointment at some repair shops. The most common cause of electrical problems on a Harley Davidson is the battery or the voltage regulator. Troubleshooting can be performed in any garage, and it saves on expensive service bills.