engine dying due to electric fan
battery- 12.55 volts, 649 cca
alternator- 14.75, 13.9 when fan kicked on
coil- 6.7, and roughly stayed the same while running and with fan running.
I did check the relay for the fan, that checks out. the fan seems to work properly, cycles.
thanks to all that are helping, I do so much appreciate you all.
Battery.........is that running? If so IT IS NOT CHARGING or the alternator is not keeping up with the fans.
IF the battery v is "running" then the higher voltage at the alternator post indicates that there is a voltage drop in the harness, a BIG one.
I quote this article a LOT. Some folks don't like how it's done, but whether you do this 'as per article" or take another route, this article DOES give a very good overview of the problem:
Catalog
The simplified diagram in that article:
Gives you a VERY good "view" of the trouble points in these girls. EVERY SINGLE TERMINAL POINT mentioned below must be checked, and by that I mean "with a voltmeter" to "bracket" the area of concern. In no order the troubles are:
terminations at and the fuse link itself
BIG trouble is the big red and big black ammeter/ charge wires going through the bulkhead connector
The ammeter itself, internally, as well as defective/ loose terminals at those ammeter wires
The ignition switch connector
The contacts IN the ignition switch itself
In very rare cases (but it happens) the "welded splice" can fail. This is a factory welded splice in the black ammeter wire, up under the cluster, which feeds off as shown in the diagram.