Voltage light on won't charge battery

[turbo chris1970]

Here's the situation , I have a new battery ,alternator ,from a spring tune up recently the light came on and the battery was charged and alternator tested so what could be the issue ? I fired her up after the charge and test and she ran fine with the light is still on so what is the problem guys please help thanks Chris from philly

 

[TurboBuRick]

So the volt light is on when motor is running??

 

[turbo chris1970]

Yes

So the volt light is on when motor is running??

yes, I had the battery tested and alternator and they were fine and both were bought in the spring during spring tune up any suggestion

 

[GNVenom]

If the VOLTS light is on and the alternator is spinning, you have a defective alternator.

Check to see if the light is on, key on engine off. The once you start the engine, does it go out briefly, then back on? It points to a bad regulator.

Be sure the alternator is spinning, and belt not slipping.

 

[No disintegrations]

On a Tahoe I worked on; it would intermittently charge and then not charge. When I brought alt to store for core return we tested it and it passed but still was no good due to intermittent nature. Make sense?

 

[dynoman]

Makes sense to me cause I deal with it almost every day. Components appear to be fine under initial load but fail after prolonged use , then "reset" themselves after "cool down" like nothing ever happened. It will slowly start charging less and less then it will eventually fail completely .

 

[turbo chris1970]

Tha

If the VOLTS light is on and the alternator is spinning, you have a defective alternator.

Check to see if the light is on, key on engine off. The once you start the engine, does it go out briefly, then back on? It points to a bad regulator.

Be sure the alternator is spinning, and belt not slipping.[/QUOTE thanks
For that info I plan to check her out in the morning I'll pm you with the results

 

[turbo chris1970]

Have any of you cats heard of the volt bulb that has a diode in the bulb casing and is the. Only one of the bulbs in the dash which has one of all the bulbs of its kind ? I've heard this in another thread from the board that it tells the alternator to charge and when and when not to charge the battery! Any thoughts?

 

[Heskahoka]

Have any of you cats heard of the volt bulb that has a diode in the bulb casing and is the. Only one of the bulbs in the dash which has one of all the bulbs of its kind ? I've heard this in another thread from the board that it tells the alternator to charge and when and when not to charge the battery! Any thoughts?

See page 3 of this document.
http://www.installationinstructions.com/FYI/alternator_charging_tech.pdf

That bulb is no longer available.

 

[Gene Van Horn]

Do you not have a volt gauge? If your battery tests ok, and your alternater test ok then your bulb in the dash could be not making comtact as it should. When my car did this, the volt gauge would go from good to bad sometimes when i hit a bump, i searched and searched and tested and tested and finally friend of mine tapped on the dash and the gauge would go up and down as the bulb made contact. No contact, no charge as the bulb completes the circuit.

 

[turbo chris1970]

See page 3 of this document.
http://www.installationinstructions.com/FYI/alternator_charging_tech.pdf

That bulb is no longer available.

See page 3 of this document.
http://www.installationinstructions.com/FYI/alternator_charging_tech.pdf

That bulb is no longer available.

That was the info I needed I took apart my dash today and got the bulb out and check the board for any imperfections thank you so much for sending that after all we are keeping these GM legends alive again thanks
Chris from Philly pa

 

[Royal-T-Ltd]

I use a Caspers field fix harness to bypass the bulb and not have to worry about weird charging issues.... just a thought... it's plug and play. - aaron


Sent from my iPhone using Tapatalk Pro

 

[turbo chris1970]

Thanks

I use a Caspers field fix harness to bypass the bulb and not have to worry about weird charging issues.... just a thought... it's plug and play. - aaron


Sent from my iPhone using Tapatalk Pro

thanks I can't sodder anyway

 

[No disintegrations]

Thanks

thanks I can't sodder anyway

The only trick to good soldering I've found is to use rosin flux. The flux gives a very clean surface that solders great.

 

[Heskahoka]

Thanks

thanks I can't sodder anyway

No soldering required. Plug and play. It was designed so we did not have to rely upon the volts light bulb to charge our cars.

http://www.casperselectronics.com/cart/index.php?route=product/product&product_id=604

 

[turbo chris1970]

Just got my field fix kit today so thanks for all your guys help now I hope it's easy to install as caspers says it is

 

[GNRick]

This thread morphed from the volt light staying on to the volt light being burned out.

 

[DR BOOST]

exactly^^^ and the maker of the the field fix unit came on here to tell him his problem is a bad alternator.