From what I recall and could affect that, a solenoid controlled by a relay, witch is turn on by the MS. I've removed all wiring/relay/solenoid to make its not related. I had a MSD bix, witch I've removed and wiring too.Can you state exactly what you changed before you started your have this issue?
I do have:What about the engine to chassis ground?
Shock bolt?Battery negative to shock bolt
You are right, shock bracket.Shock bolt?
You mean the shock bracket to body bolt?
Update: I've used an oscilloscope to capture TFI module and would like help get the right diag about finding.Multimeter won't show electrical noise, you need an oscilloscope.
Let me know,
We're just going all the way down the rabbit hole.
I'm not certain what there is to let you know.
Let [us] know if scoping the TFI module helps you in any way, shape, or form. If you suspect the module is bad, swap it.
Recently no. I've changed them for troubleshooting purpose to see if that might "fix" the behavior, witch is not.Curious......change plug wires recently? Don't run out and by any, more to the point, what kind are they?
Solid core or regular resistor?
yes, the plug WIRES, similar issue but a little different, solid core wires were install on a friend's car, brand X with an HEI distributor, the solid core, well non-resistor wires anyway, high RPM miss, you usually get that annoying radio buzz, not fun like a beer buzz.Think he was asking about the wires, not plugs.
My mistake.Think he was asking about the wires, not plugs.
I'm new to oscilloscope since that issue so it's a give or take.Did we verify that the shielding on the wiring to the ECU was intact? Also, if you’re getting 16v anywhere, just wondering if a bad regulator on the Alt could be creating unusual symptoms?
PIP and SPOUT should have a square wave.
Pin 3 should be battery voltage with key on and cranking. Coil trigger is a ground to the primary side of the coil. The module turns off the ground to fire the coil.
I can't make anything from those pictures.
What's what? Where are you testing from.
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