alternator overcharging any help ???

[moparstuart]

Last sunday coming back from a two hour drive to a show my alternator started discharging and making a slight bearing noise . at speed it would still charge some but at idle it was discharging . Ok so i get a new one and now its great at idle , but at speed the gauge is off the charts over charging ? Is this a bad alternator or has my regulator fried and is not regulating it correctly Huh
the alternators have life time warrantys but are cheap remans ? Also they are both a 78 amp to accomidate my new power accessories i've added . THis is on a 70 with factory style mopar electronic ignition .

 

[Big John]

Most likely had a bad diode or two in the first alternator, but the new problem is the regulator. The old alternator probably wasn't putting out the power it should have and the regulator problem wasn't an issue.

 

[Big John]

or wait.... check the wires to see if anything is shorted to ground!

 

[Big John]

http://www.69roadrunner.net/Tech Reference/charging.pdf

 

[Big John]

One other thought... Are the field connections to the alternator on correctly?

 

[A31PKG]

I'm really diggin' those new-fangled electronic voltage regulators too... they're cheap, look somewhat stock, and work awesome. Unless you're already using one...

 

[69hemibeep]

I'm really diggin' those new-fangled electronic voltage regulators too... they're cheap, look somewhat stock, and work awesome. Unless you're already using one...

They do work smoother

 

[Roadcuda]

I'm really diggin' those new-fangled electronic voltage regulators too... they're cheap, look somewhat stock, and work awesome. Unless you're already using one...

They do work smoother

Mt car has one and the lights are brighter and stay that way even at idle.

 

[moparstuart]

70 regulators were already better :yesnod: :yesnod: :yesnod: :yesnod: :yesnod:

 

[moparstuart]

After a new voltage reg , checking all the wiring and connections , plugs and grounds . It was still over charging . The gauge would still peg all the way to the right at speed . So i pulled the alternator and got another , all is fine now . The new alternator had a bad field that was grounding out .

New reman stuff out of the box is junk these days , life time warranty a must .

 

[beepbeepbill]

I'm really diggin' those new-fangled electronic voltage regulators too... they're cheap, look somewhat stock, and work awesome. Unless you're already using one...

Bump.

which one are people using? New regulator may help with my problem too.

Bill

 

[Big John]

I'm really diggin' those new-fangled electronic voltage regulators too... they're cheap, look somewhat stock, and work awesome. Unless you're already using one...

Bump.

which one are people using? New regulator may help with my problem too.

Bill

VR706, available at Autozone and probably some other places.

I did this with one: [url="http://69roadrunner.net/phpBB3/viewtopic.php?f=6&t=88&p=723"]viewtopic.php?f=6&t=88&p=723[/url]