Was wondering if anybody knows what kind of voltage the alternator should be putting out under a load I have a 92 with the FE engine in it?
I'll describe my situation. I just changed out the alternator yesterday, because the old one was bad. Bought it from Toyota, and it cost me around $300 it was a rebuilt. The guage in the truck looked fine last night. Today in the cold, temp around 32 degrees F.I put a load on it meaning the lights, both the heaters, and the rear windshield defroster and noticed when I was driving the gauge was flicking up and down when at a stop light. It was flickering up and down in the good area of the gauge.
After noticing that I went and got my volt meter out.
These are the approximate readings across the battery.
No load-14 volts
Lights on -13.6 volts
Lights + main heater-12.5 volts
Lights + main heater + defroster-12.5 volts
Across the Altenator these are the readings.
No load-14.2 volts
Lights on-13.6
Lights + main heater-12.7 volts
Lights + main heater + defroster-12.7 volts
So does this mean that the altenator is still good? Or does it mean I am being a little to critical at this moment.
I'll describe my situation. I just changed out the alternator yesterday, because the old one was bad. Bought it from Toyota, and it cost me around $300 it was a rebuilt. The guage in the truck looked fine last night. Today in the cold, temp around 32 degrees F.I put a load on it meaning the lights, both the heaters, and the rear windshield defroster and noticed when I was driving the gauge was flicking up and down when at a stop light. It was flickering up and down in the good area of the gauge.
After noticing that I went and got my volt meter out.
These are the approximate readings across the battery.
No load-14 volts
Lights on -13.6 volts
Lights + main heater-12.5 volts
Lights + main heater + defroster-12.5 volts
Across the Altenator these are the readings.
No load-14.2 volts
Lights on-13.6
Lights + main heater-12.7 volts
Lights + main heater + defroster-12.7 volts
So does this mean that the altenator is still good? Or does it mean I am being a little to critical at this moment.