What Causes Low Alternator Voltage. COMMON CAUSES OF ALTERNATOR PROBLEMS. When I start it cold 1500 rpm it charges.

The low voltage may be indicative of issues with your alternator. What causes alternator voltage drop. If the alternator voltage is too low.
I should have noticed the dash light was not coming on at start but I ignore.
Many drivers neglect this fact which can lead to having alternator problems. Answer 1 of 4. The charging voltage should be between 139v to 144v. A burnt-out alternator stator.

