charging problems
What to check next
Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.
Have charging performance and cable voltage drops checked on the vehicle under load before replacing another component.
Guidance references and applicability
Source: This question and its visible discussion. The roadmap distinguishes the original owner's reports from other participants' experiences; proposed follow-up is editorial guidance, not a confirmed diagnosis. Fluke: Diagnosing voltage drops https://www.fluke.com/en/learn/blog/automotive/electrical-automotive-troubleshooting General support for loaded circuit testing; use matching vehicle specifications.
Andrew
:roll: If any of these are not fully connected., you may receive all kinds of strange happenings: batteries that don't charge, lights that blow out prematurely, runs rough, fuses that don't last, even strange shorts here and there, popping sounds as the electricity finds its way out through whatever available source it can find, transmissions that don't shift right, car that dies every time you turn the heater on.
:wink: Most makes and models have a ground on the block, on the transmission, and on the heater. Personally I put an extra ground from the starter to the body for good measure because the one on the block sometimes goes bad and cannot be easiely rerouted. This serves to replace the old ground wire on the block, secures my car against future aggravation, and gives me piece of mind that it will be running smoothly down the road.
:oops: Hope this helps
Discussion summary
charging problems
The owner of a 1989 Corvette reported a charging problem despite a replacement battery and an alternator that passed an off-car test. Replies raised wiring, grounds and an in-vehicle alternator check.
Reported outcome: No in-vehicle test result or completed repair was reported.
The bench test and visual wiring check do not document circuit performance during the fault. Suggested regulator locations were not verified.
