Question about 2005 Datsun 720
New battery, new alternator. Battery charges when idling but loses charge at speed.
Could it be the regulator?
81 datsun truck (720)
This sounds like the altenator belt is loose. When the altenator is under a load the magnetic field causes the altenator to require more fource to rotate. At higher engine rpms the belt can be slipping on the altenator pulley. There is one other possibility I can think of and that would be that the voltage regulator is faulty and and causing an overvoltage at higher engine speeds and therfore opening up the field circuit to prevent the altenator from over charging the battery this is a safety function of the regulator. I would check the belt first.
Posted on Mar 04, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 09, 2016 | Datsun Cars & Trucks
Apr 18, 2015 | Datsun Cars & Trucks
Jan 08, 2013 | 1999 Toyota Camry Solara
Dec 18, 2012 | 1998 Dodge Stratus
Apr 18, 2010 | 1998 Cadillac DeVille
Sep 09, 2009 | 1998 Chevrolet K1500
May 02, 2009 | Honda Accord Cars & Trucks
Jul 27, 2008 | Ford Mustang Cars & Trucks
Jun 21, 2008 | 1996 Ford Windstar
290 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: