Is this a bad alternator or?? Help this electrical idiot out!
#1
Lexus Test Driver
Thread Starter
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I noticed my car start making a slight whine from the engine compartment. Very slight. The next day while driving, I got the VSC, VSC OFF, ABS lights on. Shortly after, my radio went off. I immediately killed the climate control...and the radio went back on. So I'm thinking battery/alternator.
So I did a check. With car off, voltage off the battery was 12.1 volts. I started car, turned on headlights, A/C on full, radio on etc. Car was revved and held to 2000 RPM. Voltage dropped very slowly to about 11.5, but stayed there.
I'm still thinking alternator. But I was able to drive home from work at night with headlights on and I made it no problem. Drive was 20+ miles.
Is this the alternator on the way out? I suspect yes.....but just want confirmation from the brain trust here since I'm a bit of an electrical idiot.![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Thanks!!
So I did a check. With car off, voltage off the battery was 12.1 volts. I started car, turned on headlights, A/C on full, radio on etc. Car was revved and held to 2000 RPM. Voltage dropped very slowly to about 11.5, but stayed there.
I'm still thinking alternator. But I was able to drive home from work at night with headlights on and I made it no problem. Drive was 20+ miles.
Is this the alternator on the way out? I suspect yes.....but just want confirmation from the brain trust here since I'm a bit of an electrical idiot.
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Thanks!!
#2
Instructor
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Good luck.
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