What causes the voltage gauge to drop to zero?
What causes the voltage gauge to drop to zero?
Double check the plug to your altinator and the one hot wire going to it. Had the same problem a while back, except for the lights flickering. Would like to say I have an answer for you but I don’t becasue my problem went away soon after. It happened though when I was driving one time in an extreme down pour.
Why does my check gauge drop to zero check?
My check gauges light was also followed by a low voltage code the next day. One thing that I was looking into though was the temp sensor that is under the battery. It reads the temp of the battery and then sends a signal to the PCM on how much to charge. The other thing was maybe the regulator was bad in the PCM.
What makes my car voltage gauge read low?
As a vehicle slows, engine/generator RPM slows and the current (amperage) output of the generator may not be sufficient to supply the loads, the vehicle system voltage will drop and the lights will dim. Dimming of the lights is an indication that current is being pulled from the battery.
Why does the dash gauge switch from battery to alternator?
OK now that is starting to make sense. If the dash gauge switches over from reading battery voltage to alternator voltage after the engine starts, and there’s a diode between the alt. output and the battery, it would explain a lot. I will take readings at the alternator and let you know what I find.
Double check the plug to your altinator and the one hot wire going to it. Had the same problem a while back, except for the lights flickering. Would like to say I have an answer for you but I don’t becasue my problem went away soon after. It happened though when I was driving one time in an extreme down pour.
My check gauges light was also followed by a low voltage code the next day. One thing that I was looking into though was the temp sensor that is under the battery. It reads the temp of the battery and then sends a signal to the PCM on how much to charge. The other thing was maybe the regulator was bad in the PCM.
As a vehicle slows, engine/generator RPM slows and the current (amperage) output of the generator may not be sufficient to supply the loads, the vehicle system voltage will drop and the lights will dim. Dimming of the lights is an indication that current is being pulled from the battery.
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