Percolation? Heat soak? Don't drive during summer??

Yes I have... i have a weird coil... it sparks all the time when I put the ignition on, you can hear it... heres a fun video, does it with both of my coils... only thing we can think is it is because of the tach on my steering wheel.



I really think this is related. If the tach does it, disconnect the tach. If not, then I bet the ecm has issues.