I'm having this weird issue, after a good solid drive with the car fully warmed up and shut down, the car would not re start. absolutely no spark. let it cool down and baam it starts. when I popped the hood and touched the coil pack - it is lava hot. but it doesn't affect drivability at all. only problem is no spark when trying to restart. to little bit narrowing down. I used a leaf blower to cool down the coil pack and the car starts. so I know nothing else needs to be cooled down. seems to be both trailing and leading has no spark even though the coil pack closer to the firewall is getting extremely hot. vehicle is s4 with t2 swap with stock s4 coil packs. it is running a haltech ps1000. any suggestion?

 

hmm..
I'll toss this out there..(seeing I am no expert and just read ****..a lot).

What is the dwell time set at?.
I know That AEM coils could only go about 4.5 ms and then would be a little finicky.
Maybe it may pertain to your setup with stock coils????

 

i have no idea what setting my tuner have in it. I have spare coil from a t2. I am going swap it and c if that does any good.

 

well, swapping coils didn't help at all. everything is so hot underneath the freaking hood. 180 degrees same as the engine temp pretty much, is it normal?

 

I agree with misterstyx69 as it is almost certainly a dwell issue. I think you'll find the dwell settings under Main Setup and Ignition. For FC coils, should be around 3ms.

 

will try that