Hi Folks, I'd appreciate your take on the following:
* A previous owner had replaced the alternator on my 2QM15 with an Arco 84135 alternator which I understand is a replacement for the LR135-31 12V-35A alternator that was original equipment. The Arco 84135 has no L terminal so I could not check when the alternator was charging. I looked at battery voltage before the engine started, about 12.6V on both, and after it was running, and they were the same, Belt tension was good so I assumed .. faulty alternator.
* I replaced it with an Arco 84150, the replacement for the LR 155-04 12V-55A that was the original equipment upgrade. Again no L terminal. Used a pry rod to get good belt tension for the replacement.
* Battery switch to just number 1 battery and ran the battery down to 11.9 first by loading it as much as I can. I leave all the battery load in place and start engine (it was already warm). Battery voltage jumps over 30 seconds to a minute to 12.4V and stays there for the next 35 minutes - no increase beyond that. Engine still running, I turned off all the load and voltage jumps to 12.6 but does not increase beyond that. Certainly not to 13V which is what I see when I have my solar panels charging the battery with no load.
Appreciate any feedback on whether you think the alternator is working and why I don't see 13V on the unloaded battery or anything silly that I am doing to see these measurements.
thanks!
* A previous owner had replaced the alternator on my 2QM15 with an Arco 84135 alternator which I understand is a replacement for the LR135-31 12V-35A alternator that was original equipment. The Arco 84135 has no L terminal so I could not check when the alternator was charging. I looked at battery voltage before the engine started, about 12.6V on both, and after it was running, and they were the same, Belt tension was good so I assumed .. faulty alternator.
* I replaced it with an Arco 84150, the replacement for the LR 155-04 12V-55A that was the original equipment upgrade. Again no L terminal. Used a pry rod to get good belt tension for the replacement.
* Battery switch to just number 1 battery and ran the battery down to 11.9 first by loading it as much as I can. I leave all the battery load in place and start engine (it was already warm). Battery voltage jumps over 30 seconds to a minute to 12.4V and stays there for the next 35 minutes - no increase beyond that. Engine still running, I turned off all the load and voltage jumps to 12.6 but does not increase beyond that. Certainly not to 13V which is what I see when I have my solar panels charging the battery with no load.
Appreciate any feedback on whether you think the alternator is working and why I don't see 13V on the unloaded battery or anything silly that I am doing to see these measurements.
thanks!