sibbs

To keep this post short, we got the car fixed and did a 2nd-3rd gear pull. Go to put it into 4th and the car is completely dead. No power to the hondata in the ecu. No fuel pump cycling. No lights on the ecu. We tried another ecu and that didnt change anything. Tried two different main relays, nothing. Tried resoldering one of the main relays. Nothing. If there is a way to test a main relay with an ohm meter please link me. Maybe we tried two bad ones. Also, what else should we try to check in diagnosing this problem? Has anyone else come across this?