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Old 12-13-2018, 12:12 PM   #8
Charlie-III
NASIOC Supporter
 
Member#: 30669
Join Date: Dec 2002
Chapter/Region: Tri-State
Location: USA, North NJ, 07456
Vehicle:
1998 Legacy 2.5GT
Silver Sleeper BK, 5MT

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I have been watching this thread.
If you said issues when hot, then I go to electronics since they can fail with some heatsoak (a sorta common failure).
If fail when cold, I would lean away from coils (mostly spark plugs or cam/crank sensors, cold usually helps).

If you think it's a sensor/coil connection, maybe pull the connection apart and twist (assuming flat pins) a bit, like 5-10* so it sits firmer in the mating plug.
Also just plug/unplug sensor and coil connections a few times may make things better.

I sorta hate intermittents, I prefer a dead die.......then check.

Yes, usually the crank trigger is what drives the tach in the car......no needle movement when cranking, bad sensor......wiring.....tach.
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