[ike84]

Total disclaimer - I don't know **************** about a pico. But, if this tool is charting out voltage over time (which it appears to be) you have an issue with that the wiring somewhere between the dme and the spark plug.

Before you ship it out, I would repeat this test on your 03, or even on this car with cyl 2/5 or 3/6. My bet is that you won't see those spikes.

The spikes don't necessarily have to be voltage coming out of the ecu - there could be a break in the line that is allowing a short. Even a small insulation break - you know, **************** that tends to be exacerbated when things heat up (anyone who's has had a microswitxh issue knows what I'm talking about) - between that wire and another hot or ground could be causing the abberant voltage. Remember that the wire is just a conduit and your tool is reporting what it is detecting. Hell, there could be electrical short anywhere between the ecu and the spark plug tip. It's all conductive.

Here's what I would do - run the test on the different cylinders. If there are no abberant spikes, start working your way down the line from the ecu. First, cut the wire just after it comes out of the ecu (leave enough to splice back later) and run the test again. If the spikes are still there, it's an ecu issue. If the spikes aren't there, splice a new wire from there down to your coil pack and see what happens. If the spike returns the there's an issue with the coil pack wiring harness, coil pack, or plug. If there are no spikes then your car may be fixed and you owe me a beer. Or I just wasted a day of your time and I owe you a beer.

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