I got back home last night for an undetermined amount of time, likely brief. I went outside this morning, in the rain, and decided that then was as good a time as any to hose off all the maple helicopters that had accumulated on the car while I was gone.
Well one thing lead to another and I wound up giving the engine compartment a degreasing treatment. It doesn't look much different from before. But, there was more orange engine paint uncovered than I was expecting. I had thought there was nothing left but rust and dirt.
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Then the old leaking master cylinder got my attention, so I went to swapping that out. I pulled the replacement out of the box and found it did not have the built in bleeders like it was supposed to.
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But, it's installed and it works. It took some tedious work, but the tube nuts broke free on the original GM lines too.
Right by the master cylinder, the horn relay is mounted to the firewall and it also serves as a main power junction. One of those wires was all chewed up and broken, so I repaired that.
Things that started working were:
Wiper motor (after helping it along for a few strokes)
Left turn signals
Right turn dash indicator
GEN indicator
I don't know which of those was affected by the broken power wire, if any. They may have just decided to start working again.