Thread: Alternator not charging adequately (Thor 4.6 150A)

Originally Posted by glenhendry

Thanks wayneg, I did get one of those alternators and installed it. Things are better now but I still only have ~11.5v in the morning, which starts the car, but I expect to see ~12.4v. I am having a battery drain issue which I believe has been traced to the ODBII scanner waking the BeCM all night.

That happened to me too

This is confirmed, a few days after disconnecting the OBDII scanner from the port, now I am reporting better (~12.nnV) in the mornings. Now I will have to power the ODBII port off of a relay from the ignition as suggested in RR.net.

This new diagnostic scanner must have arrived about the same time as all my alternator problems. Bloody coincidences!