My frp drops to around 3.5k psi when engine rpm is below 2000. Most of the time I can baby the throttle and it will build pressure back to normal levels, but sometimes it will limp & get a P1093. Does not lose frp during power regiment or while using tow/haul with truck unloaded, but it does when when towing after tranny shifts into OD. Mods are listed in my signature.
LLY: losing frp at low rpms
- Thread starter flash1248
- Start date
hey bud. i have a 06 lbz doing the same thing but mine is throwing the p0087 code. which is low fuel rail pressure. but now i cant keep mine running so im fixing to go rack my brain and see if i can figure it out. so if you figure yours out let me know what you did so i can try it on mine and if i get mine fixed ill let you know what i did.
Sounds like your FRP reg mod isn't working right.
But also do a bottle test to see if the PPE race valve is leaking.
But also do a bottle test to see if the PPE race valve is leaking.
