Any help...I’m out of ideas.
Alternator issue, getting too hot to touch. Any help would this would be greatly appreciated:
Wiring as is, (alternator neg grounded to engine, positive to starter, starter to battery isolator which can then select which battery to charge) alternator gets very hot when engine running.
- when connected (via switching isolator switch) to starter battery, voltage reads 14.6v consistently. (Starter is a 90ah car battery, lead aside) alternator still hot.
- when connected to house bank (4x Trojan 6v lead acid) reads between 13.6 and 13.8v. Amps in reads between 65-74Amps. (Alternator is a 105Amp I believe)
- engine starts and runs fine.
@ rest, depending on state of charge, starter reads 12.6v, house read between 12.3-12.6v depending on charge.
What I have done so far:
- Replaced Alternator, from a 60Amp new (was exhibiting similar issues) to this current new one. Both heat up, just to hot to touch, guessing 120 degrees C.
- Replaced both + and - wires from alternator to ground/starter. Same issue.
- Cleaned grounds on engine. Same issue.
- Took + straight from alternator to house bank, bypassing all other wiring, so alternator connected to ground, positive to positive connection on house bank. Same issue.
- when I checked voltage @ alternator, it reads 13.99v, when I check @ battery bank, between 13.6 and 13.8v.
- Ensured belt is very tight.
- Ensured all bolts are very tight.