So I have a fully built d16y8 boosted and I was having idle issues and traced it down to a bad throttle body put a new throttle body and and fixed that issue then went to go test drive it and got maybe half a mile down the road and car shut off and went to restart it and the pump never primed or kicked on and I look at my ecu and the hondata isn’t getting a gree light meaning no power I’ve checked all the fuses there all good and I just replaced the ignition switch thinking that was it what else could it be?

 

Do any warning/indicator lights come on your gauge cluster when you turn the key to ON ?

 

I get all the normal ones like the cel but usually the cel goes away after the pump primes and the pump never primes cause the ecu isn’t getting power

 

Do you ever get it figured out? I have exact same issue my car even ran up till yesterday when I got in it to try to start it. Car was sitting for about 6 months with battery and ECU removed.

​​​​​Only difference is mine is K20a2 with kpro v4

 

I had the same issue turned out my grounds where bad. Check all grounds (at thermostat housing, valve cover, Transmission).