No spark on 1 & 4. 7-bolt with Evo Ecu...

[97gst_spyder]

So the basis of issue is that I have no spark on 1 and 4. I also have a semi-working RPM gauge. At idle (if you would call it that) the gauge is at 0, when I hold the throttle down is goes to 1k, but its definitely higher than that. This all started after a headgasket change (lost compression over night?! Whole different story)

Here's what I have done so far.

I have checked the following in a known good car:
- Ecu
- Coil Packs
- Power Transistor

I have test pointed the harness 3 times now, and had my buddy test point it also with everything going to where its suppose to. ECU, Power Transistor, coil pack. Tested all the voltages from the power transistor plug, all good. The blue connector is still all there.

I'm at a complete loss.

 

[2GFWDbeast]

try a different set of spark plug wires. Usually when you have no spark like that its either the coil pack or the power transistor.

 

[97gst_spyder]

Yes, I knew I forgot something. They were tested on my buddies car. The plugs were swapped too.

 

[2GFWDbeast]

Ignition control module, and even the ECU. OHM out the coils, should have less than 4 ohms on the primary and 10-15 K Ohms on the secondary side,

 

[97gst_spyder]

I checked them too, fine.

But I just found the issue after pulling the harness again. Some how the two black w/white were crossed... So everything is good now!

Thanks for the help!!

 

[gofer]

I checked them too, fine.

But I just found the issue after pulling the harness again. Some how the two black w/white were crossed... So everything is good now!

Thanks for the help!!

You crossed them when you wired in that reverse light sensor.

 

[97gst_spyder]

Yea, I basically made this harness. So it's been an uphill battle since the beginning.