Lost my dash Tach
#5
On my old 93 1.6, i had this happen right before the igniter went totaly out on me
It too also went from being fine to nothing
I had an extra one at the time, so it was only the few mins to change it on the side of the road.
When i accualy ordered it from parts group, they did not have any though, since they had a race that weekend, and were taking all their spares, so im guessing its a common thing. Had to wait a week
I have that LED tach that FM sold a while back, it would not work either since i had it wired to the rear of the stock cluster
The 97 has the tach signal a different way, so i dont have the extras anymore though
It too also went from being fine to nothing
I had an extra one at the time, so it was only the few mins to change it on the side of the road.
When i accualy ordered it from parts group, they did not have any though, since they had a race that weekend, and were taking all their spares, so im guessing its a common thing. Had to wait a week
I have that LED tach that FM sold a while back, it would not work either since i had it wired to the rear of the stock cluster
The 97 has the tach signal a different way, so i dont have the extras anymore though
#8
Boost Pope
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By necessity, the CPU is taken offline during a firmware reflash. It does not go offline during an MSQ burn.
#15
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The 1.6 dash tach is driven entirely off of the car's ignitor and not the car's ECU in any way. Flashing firmware to a MegaSquirt with the ignition connected could possibly toast an ignitor, so that's why we recommend disconnecting it (90-93) or the coils (94+) before flashing firmware. Otherwise, these events would be completely unrelated.
#17
Once you get your new ignitor in, just use the pullup resistor int he diagnostics box. I've tried to run my tach off the diypnp and it doesn't work. It works fine while cruising, but during shifts, and acceleration the tach bounces around. I'm going back to the resistor method. It was reliable.
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