Originally Posted by
jackb
None of this solves the original blower motor mystery, but hopefully that was just a bad c/b. Between the new 30a c/b and replacing the connections with ring terminals, hopefully it does not resurface.
(5.8 crank/2.8 alternator) x 800 idle rpm (approx) = 1660. Pretty close.
Voltage off - 12.38
Key on - 12.0
Idling - 14.0-14.3
Headlights on - 14.18
Aic conditioning only - 12.5
Headlights and a/c - 12.3
And then it hit me. It’s the cooling fans. The cooling fans are on almost constantly on my car. In hindsight I recognized the pattern. I’ve been doing very little highway driving and lots of street driving, in the summer, in Las Vegas. The a/c is almost alway running, therefore, my cooling fans are almost always running. And the controlled measurements of voltage confirm it’s my cooling fans that are pulling all this current. They are the original style fans. One was replaced in 2005 by the previous-previous owner, and the other I believe is factory original.
Of course, I just returned the ampmeter to Home Depot last night, so I’ll go rent it again and check the current each fan pulls.
What is the normal/acceptable current per fan?