Originally Posted by
bigrig
so i did all the steps that lunaticfringe outlined above EXCEPT: fully charging battery and having it load tested.
i purchased a new voltage regulator and installed it, but the problem still exists-but much less frequent.
i did a trip a couple of days ago, about 500 miles and this i what i've learned:
when the voltage drops and the yellow check engine light comes on, if i back the throttle off to "0" (no throttle) the voltage immediately climbs back to the 14.2 and the check engine light goes off.
so apparently, this is an on-throttle condition that can be remedied by completely closing the throttle application.
any ideas of what could be causing this?