Quote:
Originally Posted by Who
Might it be the alternator?
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I'm pretty confident that it's the alternator. After some randomly noted occurences, that seems to be the culprit:
When it was super-cold out, I moved the blower from "1" to "2" and noticed the draw (it was on an uphill climb, so very noticeable).
The vehicle is equipped with an "Electrical Load Detector" that fools with alternator demand (I expect -- from the shop manual, the ELD is an input into the ECU that regulates the output from the alternator, and cyles the input back to the ELD->ECU through Batt Voltage). It may be causing the cycling action when the battery voltage depletes and is consequently restored. I noticed a Sine Wave of sorts on the data logger, which could explain the behavior. To test the ELD, one of the sequences is to turn on the headlights for draw. I drive with them on constantly (I know -- it's a safety issue for me) -- but that may just be enough for it to rob enough juice for this situation.
Since it's noticeable, should there be any cause for concern (i.e. alternator bearing wear)?
RH77