Voltage drop question
I had a hard starting / no starting issue I went through couple months back. If I unplugged voltage regulator car would start immediately. Reason is Voltage Regulator was sending 5 amps or so to the alternator field circuit and voltage regulator is on same circuit as coil. So when I unplugged the voltage regulator that reduced the number of amps that circuit had to flow freeing up the amps going to the coil.
To resolve I had to clean the thick Red and Black wire terminals in the bulkhead (pulled out of bulkhead used small wire brush), cleaned terminals at ignition switch, and new ignition switch. I went from 8 to 11 volts at the coil when cranking (Start position) as a result.
One thing to note, I had zero ohms through all of my circuits when tested with a multi meter. However, ohm testing does not test circuits under load (amps flowing). So what I learned is you really have to do voltage drop tests to know if circuits can flow the amps for the given load.
I had a hard starting / no starting issue I went through couple months back. If I unplugged voltage regulator car would start immediately. Reason is Voltage Regulator was sending 5 amps or so to the alternator field circuit and voltage regulator is on same circuit as coil. So when I unplugged the voltage regulator that reduced the number of amps that circuit had to flow freeing up the amps going to the coil.
To resolve I had to clean the thick Red and Black wire terminals in the bulkhead (pulled out of bulkhead used small wire brush), cleaned terminals at ignition switch, and new ignition switch. I went from 8 to 11 volts at the coil when cranking (Start position) as a result.
One thing to note, I had zero ohms through all of my circuits when tested with a multi meter. However, ohm testing does not test circuits under load (amps flowing). So what I learned is you really have to do voltage drop tests to know if circuits can flow the amps for the given load.