an assortment of annoying anomalies from an associate's auto

[baccaruda]

My friend Sasha's car (1995 Legacy, 2.2, 5MT) is having intermittent episodes of poor performance. She has had the codes read and cleared twice, and they were the same both times:

PO115 Coolant Temperature Sensor
PO120 Throttle Position Sensor
PO325 Knock Sensor #1 Malfunction
PO125 Insufficient Temp Forced Loop
PO133 O2 Signal Slow Banks #1 Sensor #1
(P1200 or P1700 - Mechanic has bad handwriting) Signal to TCM Circuit

She has had the battery and alternator checked, per my initial advice. I am going to look at the groundwires and the alternator's wiring harness later this week. I don't know if we should suspect the computer, but I am not inclined to suspect the actual sensors named by the codes. I would appreciate any advice.
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[scuzzy]

that's a wiring problem, you've got a ground fault or something somewhere.

no way in hell all of those codes would throw at once unless it was driven through a lake.