legacycentral bbs

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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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.