I have a 1998 k1500 5.7 vortec. I had the P0440 evap code occur a few months ago and Ive been trying to fix it ofcourse. So far nothing has worked and it comes back on within a couple days of clearing the code.
All Ive Replaced:
Gas cap
Evap solenoid
Purge valve
Fuel pump
Precat O2 sensors
Iac valve
Egr
Mpfi injector conversion
Pcv valve
Im sure theres more and not all of it was replaced due to the code, just most of what ive replaced since owning the truck in my attempt to fix the rough/shuddering idle. Ive checked forums and sites and i cant seem to find anything more to try and fix the issue.
Thanks for any help or input.
All Ive Replaced:
Gas cap
Evap solenoid
Purge valve
Fuel pump
Precat O2 sensors
Iac valve
Egr
Mpfi injector conversion
Pcv valve
Im sure theres more and not all of it was replaced due to the code, just most of what ive replaced since owning the truck in my attempt to fix the rough/shuddering idle. Ive checked forums and sites and i cant seem to find anything more to try and fix the issue.
Thanks for any help or input.
