1993 XLT 3.0 No ignition - pulse at coil
This is driving me crazy and I've thrown 3 Ignition modules and now 3 ignition coils at it. At turning the key to start, I have 12 volts at + on the ignition coil and using an LED test I have +12 volts to ground pulsing (LED FLASHING). I'm also using an HEI spark tester but no spark. Previously I wasn't getting the pulse out from the ignition module but the coil was unplugged. It needs to be plugged into the coil to pull up the ignition pulse I guess. ADDITIONAL I've used a cheap Velman scope to look at the PIP of the ignition module. A very clean square wave. I've looked at the output coil pulse at the ignition module and the ignition coil and the waveform pulses but is very noisy. As an electronic tech I've used an oscilloscope but never on an ignition system.
Last edited by henpitts; 05-22-2015 at 12:09 PM.