The car is cruising and all of a sudden I lost the power. Stop at side road and brought the car home with my trailer.
Checked the cam sensor - fuse - relay - ground and they are all good.

The car has no spark on all cyl. Is is possible to have 4 bad coils?

Update: when I turn the ignition on, I see one spark at #4cyl (that's it) but when you keep cranking, there are no sparks on all 4.
It gives me an indication that my AEM ECU is good???

How can I test the crank sensor? I hate to take this thing out - finding out later that it's not the issue.

 

...NEVERmind - i found the problem

 

....and it was?

 

I'm sure the 1052 AEM has bug and they covering it up.

I put my stock s2000 ecu and fired up right away. Then, I put the AEM back and it fires too! The whole damn day there was no spark. then when I primed it
using the stock ECU it works????? What dah.....

I called them and they played like they never heard this problem before. I know a couple of tuners said the same way (sometimes it looks like at limp mode, all of a sudden it works). What they are telling me is to buy the series 2.
I asked if there is a program that they can take the old one and get a discount on series 2. They said they do.....so, I'm sure they know something that we don't know.

It's always in the back of my mind that it will happen again....maybe 300/500 miles away from home

 

Keep the oem ecu in the car