van runs good cold shift's good.hold it to the floor and will run thro the gear's fine. lot's of power. when warm's up won't shift if holding to floor if you let up the gas a hair will shift then.has loss of power when warm. take's for ever to get to 55mph . and if you hold it to the floor and it don't
shift it will act like it's going to to the riv chip, start's farting and bucking. have change the speed senor the tp senor and the map senor.. did a fuel presser test came up with 30 psi at idle . did the squeeze return line same presser. took it for a drive with presser gauge stell on and when i hold to floor the presser drop's to 10 psi be for shifting again have to let up on gas befor it will shift . guess i'm hopeing i don't need to do a fuel pump. thx's for reading this

 

Your fuel pressure should be up around 45 PSI and not drop to 10 PSI when accelerating. Your fuel pump is weak.

 

i just wanted to make sure i was not buying a new pump for nothing
thx's again for the in for the info.. got new pump in . have not takeing it for ride yet . stell got a hose or two to put on . the dark got me ...thx's again