Im a pro-trike builder and have one useing the entire front clip from a 94 Accord f22 A lot of stuff has been removed ,, most of the vacuum stuff ..EGR and the brake switch wiring.. (I use my own brake lite system)

When I hit the brakes at idle the engine dies.. The check valve seems to be working well and holds the vacuum like it supposted to. I dont have the problem when it is cold and I was thinking of bypassing the coolent going to the idle valve..

Any suggestions?