I have a 1996 Isuzu Trooper with 110000 mile on it. I had an issue with the alternator about 6 months ago. I switched it out and made a road trip about 800 miles and it stopped charging again. I then took the alternator back to the store where I got it and they were surprised it had failed. They replaced it with another. I put that one in about 2 months ago, and now it is starting to whine and it doesn't want to charge above 2500 RPM's. I can see the voltage drop from 12.5 down to below 10v. When I release the gas pedal the voltage comes back up to about 12.5. Do I need to get another alternator? Could there be another issue in the truck? I assumed that if there was a bad fusible link, changing out the alternator would have done nothing. Please help me out.
Thursday, January 26th, 2006 AT 4:08 PM