help with alternator problem
Thread Starter
Drifting
Joined: Jun 2012
Posts: 1,990
Likes: 183
From: Port St. Lucie Fl
help with alternator problem
Last night the 2nd alternator in 2000 miles dropped to 12 volts on the gauge and with fans and headlights just over 9 volts. Last time I verified it with the voltage my ecm was seeing and double checked it when I returned it under warranty to the parts store, it was a new Remy . This time I drove it home from the track 100 miles away. By the time I made it home the gauge was showing about 9 volts with nothing no headlights or fans on, what could be killing these alternators?
Race Director
Joined: May 2006
Posts: 18,668
Likes: 2,564
Where are you buying the alternators ? If both from same place maybe you should try some place else. The Delco site does not show new alternators only rebuilt
http://parts-catalog.acdelco.com/cat...log_search.php
http://parts-catalog.acdelco.com/cat...log_search.php
Last edited by MelWff; Aug 4, 2014 at 12:53 PM.
Burning Brakes
Joined: Jan 2012
Posts: 943
Likes: 73
Last night the 2nd alternator in 2000 miles dropped to 12 volts on the gauge and with fans and headlights just over 9 volts. Last time I verified it with the voltage my ecm was seeing and double checked it when I returned it under warranty to the parts store, it was a new Remy . This time I drove it home from the track 100 miles away. By the time I made it home the gauge was showing about 9 volts with nothing no headlights or fans on, what could be killing these alternators?
Burning Brakes
Joined: Jan 2012
Posts: 943
Likes: 73
Drifting
Joined: Apr 2007
Posts: 1,970
Likes: 45
From: Cameron Park CA
Why don't you learn how the alternator operates so you can trouble shoot it, repair it and be on your way. They are actually pretty simple devices.
Mechanical parts include the rotor/shaft, slip,rings, brushes, bearings and case. Electrical parts are the rotor, stator, regulator and the diode trio.
A volt meter, ohm meter, circuit descriptions and diagrams, plus any replacement parts are all you need.
A few simple tests on the car following the Chevrolet Chassis Service Manual will help you determine where the problem is.
Save money and stay away from those crappy rebuilt, guaranteed forever parts.
Pete
Mechanical parts include the rotor/shaft, slip,rings, brushes, bearings and case. Electrical parts are the rotor, stator, regulator and the diode trio.
A volt meter, ohm meter, circuit descriptions and diagrams, plus any replacement parts are all you need.
A few simple tests on the car following the Chevrolet Chassis Service Manual will help you determine where the problem is.
Save money and stay away from those crappy rebuilt, guaranteed forever parts.
Pete
