I've tried everything... It's not the relays, it's not the accumulator, not the calipers, I've even relaced the whole unit itself twice and I cant hear the pump cut on at all... I can't break in my new heads (due to the brakes), and it's been like this for nearly 6-7 months to no avail... I've been on the border line of selling it... because I'm tired of spending money and getting no reward... This is my last resort.... [I'm happy for everyone who only had to replace the relay or accumulator, but I'm a case where the SC has me stranded in turmoil] -I'm in the Atlanta area.