Os I have a new altinator and voltage regulator on my 440 but the volts will still jump to 18 and when im stopped it will drop to 10. anybody know how to solve this?

 

DO you have the oem 2 field alt ?

 

What is it in????????

 

The 440 is crammed in a 1980 dodge aspen. Its been runnin just fine for almost a year now. i dont know what oem the altinator is, as all I know is that its what autozone gave me as a 440 altinator.

 

Check the voltage regulator, I had the same problem on my fury, when stopped the voltage was 11V and running near of 19V, I just put a new regulator and the problem disappeared

 

Take the alternator out and have autozone check it..

 

LISTEN UP

There are two major types of Mopar alternators. Up through '69 they only had ONE insulated brush, the other is grounded. This would be the WRONG type to install on any Mopar built in 70 or later.

The 70 or later can either be a "round back" or "square back" and has TWO insulated brushes, properly known as "isolated field" and IMproperly called "dual field" by many.

Remove both field wires. Take an ohmeter. Check continuity to ground from each one. There should NOT be continuity, that is, to ground should be "open" or "infinity."

You should have two field wires. If using an original harness they "may" be blue and green.

Unplug the regulator. Blue, or at least one wire should have battery voltage with the key in run.

The remaining one, may be green, should go to only one place---the regulator.

The regulator MUST be grounded. MUST.

If your ohmeter checks don't show up any problems, hook up as normal, but UNplug the regulator connector. Start and run the engine and see if it still charges. If not you probably have a bad regulator

If it does, either the alternator has a problem, or the (may be green) wire coming back to the regulator may be shorted to ground

Here's a simplified diagram

http://www.mymopar.com/downloads/Dua...tor_Wiring.jpg

 

My blue wire is grounded out