pk944

with my a.c. off .charging my 89 944 reads 13.86 volts. seems ok to me.
with ac on fan running , lights on , it reads about 12.90 volts. is this ok
or am i on the verge of a charging problem. thanks in advance for any help
pat .logged on as pk944.

GodSpeed

first thing you need to do is check all your grounds. I was having some strange charging issues and just cleaning the grounds helped alot.