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Old 03-22-2016, 04:28 AM   #1
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Unhappy 1.6 Tach not working

So I've installed a MSPNP2, tuned and turboed. And at some point about a week or so ago, my tach quit. This was well after the MS was installed. All other gauges work. I've read that grounds could be the cause but I didn't even come close to touching them at any point when it went out. Ideas?

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Old 03-22-2016, 09:16 AM   #2
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it didnt stop working at the install, but after?
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Old 03-22-2016, 04:19 PM   #3
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Correct, it was a random thing. I don't know what caused it.
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Old 03-23-2016, 03:16 AM   #4
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Anyone? I'm really at a loss here. What wires would I go about checking, and at what voltages?
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Old 03-23-2016, 08:06 AM   #5
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typically when a 1.6L loses the tach, it's because the ignitor is going bad.
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Old 03-23-2016, 02:36 PM   #6
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Okay. I know the blue/yellow wire is responsible for the signal. What kind of voltage should I see coming out of the ignitor on that wire?
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Old 03-23-2016, 03:04 PM   #7
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it should be rapidly pulsing to 12v.

it's the pin in the diagnostics box labeled IG-.

put your DMM in diode test mode, and put the red on IG- and the black on GND.

while the car is running, do you hear a solid beep?
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Old 03-25-2016, 01:17 AM   #8
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I have a wal-mart special dmm. It doesn't have that function unfortunately. Tomorrow I'll be swapping a known-to-be working ignitor to see if that helps. Yesterday I also tried running a wire from the ms to the tach input and setting it up in ts, but that didn't seem to do anything. So if the ignitor doesn't fix it, new gauge cluster it is.
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