Diagnosing Distributor - No Spark Chase


You got it, so it sounds like you either have a bad ECU or a ground problem on it.
Those HAVE to be well grounded to work.

They can also shock you a but if they are not grounded and you touch the box, so I can tell you a great and fast way to find out if it's ground problem with the box but you may not want to do it.

Get your thumb and forefinger on both hands wet and grab the battery negative with one hand and the box with the other with the key in the run position. :D

If the box has to get it's ground through you instead of the body metal you'll get nice little jolt.
Yea, you wont want to do that I'll bet, but it sure does point out a bad ground quick.:D
I just lick my fingers a little and do it.

Maybe consider running a ground wire to the box with a bolt and nut if the metal it's bolted to looks too bad.