Car: Honda Civic 2003 EX, with 110,000 miles, Timing Belt replaced 2k miles ago. Manual Transmission.
When: Issue surfaces only when the weather is over 70, on cold weather it doesn't do it.
What: Starts normally, drive for 5 minutes. Then, suddenly and with no other indication, I hear a click behind the glove box, and immediately the engine dies. Tachometer goes to zero, and half a second after I hear another click and the engine restarts.
Sometimes this cycle (click - engine dies - RPM zero -- click - engine restarts - RPM normal) happens every 2 seconds (annoying!) for a minute or so, then each five seconds for another minute, then randomly with no set times in between.
Lights in the dash are normal, radio is still on. Only indication is the click, and the RPM going to zero, even with the actual engine turning (manual tranny).
I've tried all kinds of combinations, like radio off, headlights off, nothing seems to make any difference, but the weather.
Any ideas? Coolant Sensor? ECU dying?