Ugh, electrical gremlin is killy my ignition coil.

Here is what I know. Something in my TFI is frying ignition coils after about 50 miles whenever I put a new coil in.

I took a multimeter out to the car and did the trick where I put the negative lead on the negative battery terminal and then touch the positive lead to the block. Well, I get between .003-.008 volts on the block and a bunch of ppl over on the corral are telling me I should not see ANY voltage on the block at all. I'm going to change out my grounding strap tomorrow with a big 4 gauge unit and add another to the passenger's side. I'm also going to clean the **** out of all the connecting points.

Also, my stepfather in law is a senior ASE certified mechanic and his opinion is that under 1 volt on the block is not going to hurt anything and that the only thing that would fry a coil is a bad stator in the dizzy feeding back into it.

So basically I wanted to see if anyone else ever ran into a problem like this or had any advice.

I already replaced the TFI, the afermarket ignition box is good(problem happened with an old box too), plug wires checkout, rotor and cap are new... Can't think of anything else.

So I guess I'll replace the stator and ground the **** out of the motor and go from there? I really NEED to get this fixed asap since I have to take this thing through inspection in 12 days.

Thanks in advance guys!

Yeah but the ignition box was on there fine for 2 years not to mention that every tom dick and harry runs a box these days. This should not be an issue...

Yeah but I replaced the box with a Crane unit and the issue persisted... Problem is also that I NEED an ignition box to keep running the A3M computer via the PIH harness. I suppose I can bypass it and just run under 3,000 rpm for 50 miles up and down the highway and see what happens.

I know its the coil because when I replace the coil the car starts right back up but I don't know what is frying the coil. I'm going to try replacing the PIP and see what happens. My ase senior mechanic stepfather in-law is convinced that's the problem as he says its the only thing that would be frying the coils like this car is.

Well I changed the TFI module out when the problem first started happening and it didn't help matters. I've basically replaced everything in the ignition including the aftermarket box with another one, the TFI module, the coil, the wires, the plugs, the rotor/cap etc... The only thing left is to throw on some big 4 gauge grounding cables and change the PIP.

I can't think of anything else except to re-install the J4J1 computer, bypass the ignition box and see if that works which will be my next step if the PIP and grounds don't fix this problem. The car ran fine for years with the PIH and an ignition box though... no idea why this problem just started happening out of the blue.