I have a 95 z28 6-speed. I am having a no fire issue.... When it was starting this it would run for a while then cut off butt now it wont start at all. Ive tracked it down to no fire coming from the coil. I have replaced the coil and ignition module with no change. I dont have a blown fuse already checked that. I checked voltage to the coil through the coil wires out of the three one had 12v on it. Then I checked the ignition module with nothing at all going to it. So I am kinda stuck. Also the car has a new ecm.If anyone knows anything on this I would greatly apreciate it thanks...

 

Take a look at this (ref shoebox) http://shbox.com/1/4th_gen_tech2.html#opti_test it may help also http://shbox.com/1/coil_testing.jpg . Has the car ever worked with the new PCM .

 

Thanks for the reply I am leaning to the opti spark I still have some tests to do though. I have had to replace the opti spark before cause a leaky coolant hose. I replaced it with a msd and its been two years ago. But I remebered that the opti has to signal the computer for the computer to fire the coil. So I will see if there is any more coolant leeks or a leaky water pump thanks.