Aug 16-17, 2026

Day 7 — Thermostat Replaced & Final Validation

2 logs analyzed · 109 minutes of logged data · 10 stall/restart events detected

Project validated A new thermostat resolved the cooling plateau that had persisted since day 4 — peak coolant fell from a 213–215 °F ceiling to 196 °F, with the radiator fan finally cycling on and off instead of running continuously. The final validation run also captured the first direct evidence of piston ring seating: manifold vacuum improved measurably after the engine's first hard revs within the same log.

Logs this day

109m

Logged duration

859

Avg idle RPM (session-wide)

Stall/restart events

07Log-by-Log Breakdown

Session-wide statistics computed across each full log. These pool every idle-qualifying sample in the file, so they run higher than the narrow steady-state windows cited in the final project report — that's expected; this view shows total session variability, not just the best segment.

C-Start-1.mlgLOW CRANK VOLTAGE 0.0V

New thermostat installed. Peak coolant dropped from the prior 213-215°F ceiling, and the fan began cycling on/off instead of running continuously.

5251.0s

Duration

78682

Records

83.8–225.0°F

CLT range

6001.0

RPM max

817.0

Idle mean

200.4

Idle σ

0.0V

VBatt (crank min)

85.0%

Fan on %

Stall events*

2026-08-17_19_46_04.mlgLOW CRANK VOLTAGE 0.0V

FINAL validation run. 951±48 RPM settled idle, 196°F peak coolant, and the first measured evidence of piston ring seating (vacuum improved after the first hard revs).

1295.4s

Duration

19432

Records

87.4–195.9°F

CLT range

5809.0

RPM max

901.0

Idle mean

179.7

Idle σ

0.0V

VBatt (crank min)

19.0%

Fan on %

Stall events*

* On stall/restart counting Detected algorithmically as RPM dropping below 300 for a sustained period followed by a subsequent rise — a reasonable proxy for restart events, not a precise fault classifier. Treat as directionally accurate, not exact.