[Sound Performance]

I have a 95 Lexus with a strange problem, I just got done swapping in a new motor and started it today and it started great and ran fine. When it warmed up it shut off and wouldn't start. After letting it sit for an hour or so and it cooling off it started back up until it warmed up. The car refuses to fire the spark plugs when its warm and I am baffled. I have the 1100 unit in my car and here is a brief list of the mods, I am including everything just in case it might help.

1JZ bottom end with 2JZ-GE head
Single PT67
Twin power IGN
Uego
6sp
It uses the 1100 EMS w/ 5 bar map and UEGO.

those are the major thing that I thought might matter.

With my old 2JZ-GE boosted setup (only thing different was the bottom end) it ran fine. It did this to me one time @ the track and after sitting it finally started back up. I am just at a loss and have no idea what to check.

I went back over and started the car again after sitting for about 2 hours. It started right up and ran good, I was adjusting on the idle and let it die and it refuses to restart, no spark again. Is there a theft setting where it can't be restarted or anything?

Well I unhooked the coolant temp senor and the reading dropped to zero and the car ran like crap and then died.

PLEASE HELP ANYBODY, I am getting no help on AEM's website.

Look at a parameter called "stat synced" and see if it turns on when you are cranking it..... when its warm and will not start.

 

[Sound Performance]

So you are sure you are not seeing stat synced?

If not, this IS your problem and I have seen it before. Because the cam and crank pickups are inductive pick ups, their output can vary according to temperature, rotational speed of the motor, etc. The voltage may be getting too low for the AEM to pick up any signal. The fix to this is to change the resistors for the cam and crank in the AEM unit. These are used as sort of filters, but they will bring down the signal a bit. I have had to lower the resistence of these on some cars that have low cam and crank sensor outputs.