My r32 doesnt deaccelerate when letting go of the peddle

[Sheldon]

Hi i need some help with my car.

I had a mechanic look over it and he said something to do with the throttle control isnt working at all\

Its an R32 GTS-T with a motor swap to an RB25De non turbo also its an auto

also the auto isnt working properly and gets stuck in 3rd unless you pull the T bar down into 2nd or 1st and rarely goes into fourth

Anyways when you accelerate and let the foot off the peddle the can doesnt decelerate it just rolls were a working auto shouldnt do that, It also idles at like 1200rpm and doesnt go down when the car is heated up 

I need help understanding what i actually need to replace and fix and if i can do it myself

Thanks

Edited April 9, 2020 by Sheldon

[GTSBoy]

IACV dirty/stuck open. AAC stuck open. Huge vacuum leak. Throttle stop poorly adjusted.

Auto that is stuck in 3rd will also offer even less engine braking than you'd get if it was working properly, which won't help.

[GTofuS-T]

1 hour ago, Sheldon said:

t just rolls were a working auto shouldnt do that

 

1 hour ago, Sheldon said:

also the auto isnt working properly

seems pretty clear...

1 hour ago, Sheldon said:

I need help understanding what i actually need to replace and fix and if i can do it myself

The auto i'm guessing