Quote:
Originally Posted by tuzzio
Actually, you're quite wrong. Its been like this for 2 or so years now, I'll actually provide video evidence if you'd like. Multimeter or volts gauge, your pick.
|
I am curious about this.
The thing is, we know exactly how the circuitry works. it's simple conceptually.
you NEED +12v to the coil in order to energize it. this is absolute fact, if coil is not energized you dont get magnetic field and you dont create AC current 'inside' the ALT.
The ALT does provide its own, internal, +12v to do this job - but the key point is that it requires the RPM's to increase in order to do so. Hence his comment about revving the engine.
If you do not have +12v to the 'L' terminal on alternator [W/R] you simply cannot be producing energy without the engine increasing RPM.
So yes, your car will still work. while you drive the battery will charge, life will be OK. But at idle, if the revs dont jump up when you start you shouldn't be seeing anything above battery voltage.
If you are, the coil is being energized - the question then is HOW?
You do have the sense wire on the alternator, right? [other small one in same connector as the W/R one]