Quote:
Originally Posted by rwest
So, once again it wouldn’t fail on me... or at least not like it was.
I went for a drive today and temps are a fair bit lower than when I was experiencing the failures before, so it is entirely possible that heat was a major cause, although I had seen failures on start up after the car sat for a few days and the garage was around 60F.
Drove around for a half hour or so and did some higher rpm bursts and never saw the constant lean on the laptop... although there was a moment when I looked down and saw the screen go off and on and then it said offline and then went back to reading normal without my intervention it did it a couple times in a row, but only that episode.
Could this be an ECU issue? It is one of my suspects, especially since I tried 2 different coils and three EDIS modules without change.
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Sounds like an intermittent electrical connection. Start by visually inspecting and wiggling every connector and wire, then work methodically back through the harness to verify everything is fully seated. Use an ohmmeter to check continuity with connectors disconnected, and tug on every crimp and each wire at its entry into the connector to catch any hidden breaks. It’s tedious, but you may find a loose pin or partially seated terminal causing the symptoms.
I had a similar intermittent issue years ago on an airplane where multiple wires passed through a large firewall connector. The factory terminals weren’t fully seated in the housing, so the circuit would work sometimes and fail other times. Pushing the terminals until they clicked into place fixed it.