G lite, Not going off. Options

[malcolm2]

Took a 3 hour drive to Knoxville today. I watched the volt gauge. Seemed to be irratic. Hung at 11.4. But would jump to 13.5 for a short time them back to. 11.4. G lite was not on during the drive. After a short stop the re start is when the lite stayed on. Guage still at 11.4. I gotta get home.

Auto zone has a voltage reg. Is this a typical symptom of the easy to replace VR?

[mgphoto]

I'm using the autozone vr , working ok.
You need to check the alternator, jumper wire to by pass the vr and measure voltage at the battery.
Google search for the procedure.

[Spoke]

I'm using the autozone vr , working ok.
You need to check the alternator, jumper wire to by pass the vr and measure voltage at the battery.
Google search for the procedure.

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The schematic for the 914 charging system is below. You can easily test the alternator by pulling the VR and shorting the D+ and DF leads in the VR connector. This will force the alternator to put out maximum power. The voltage at the battery should be 14-16V. If not, the alternator may be bad or the belt is loose.

Keep in mind when doing this test that to get the alternator fully functional you may need to rev the engine to 2k or so.

I too have an autozone VR in my 914. Works great.

[JFG]

If a replacement alternator has a built in regulator does this mean the vr on the relay board is removable/obsolete with this alternator fitted?

To carry out the test below, to short the named connections , does this mean insert a cable from D+ and into DF on the relay board?






[quote name='Spoke' date='Feb 3 2018, 09:46 PM' post='2574758']

[/quote]

(IMG:style_emoticons/default/agree.gif)

The schematic for the 914 charging system is below. You can easily test the alternator by pulling the VR and shorting the D+ and DF leads in the VR connector. This will force the alternator to put out maximum power. The voltage at the battery should be 14-16V. If not, the alternator may be bad or the belt is loose.

Keep in mind when doing this test that to get the alternator fully functional you may need to rev the engine to 2k or so.

I too have an autozone VR in my 914. Works great.
[/quote]

[malcolm2]

If a replacement alternator has a built in regulator does this mean the vr on the relay board is removable/obsolete with this alternator fitted?

To carry out the test below, to short the named connections , does this mean insert a cable from D+ and into DF on the relay board?

Yes, If using an ALT with an internal VR, I would say that the VR on the board can be removed. I would wonder if wiring needs to be changed in some way tho. Maybe just connect DF and D+ like in the test below... (IMG:style_emoticons/default/blink.gif)

To test, I am supposed to remove the VR and use an alligator clip on D+ wired to the 2nd clip and placed on DF. These should be the female connectors that the VR plugs into on the board.

This will take the "regulating" function of the regulator out of the picture. And a good operating ALT should spin up a full voltage to the battery. VOM on + and - of the battery reading >16 volts would tell me that the ALT is good.