Transmission issue

[DailyBlown]

Recently my transmission has been shifting extremely hard and erraticly. The fluid level is good. Only mods are punisher valve body and moroso transmission pan. I flushed the fluid about 20k ago. The problems just developed in the past few days. It briefly threw a code, but went away before I could check it. Any ideas? I love my truck, but am broke now hopefully I don't need a new trans. It is a 04 with about 90k.

 

[Blainer]

Maybe you can try and put your stock one back in and see if that fixes it??? Valve Body That is...

 

[black99lightnin]

Maybe you can try and put your stock one back in and see if that fixes it??? Valve Body That is...

That's where I'd start also. When dropping the pan, check for shavings.

 

[Dusten]

check other things like your maf and throttle position sensor. There is more than 1 thing that can cause erratic shifts.
Also, pull codes anyways, they may still be there.

 

[DailyBlown]

Thanks guys, I will give it a shot. Unfortunately, I got ride of my stock valve body. I tried using my cheap scan tool and no codes were found, but it still shifts erratically. I will start will dropping thrown and maybe flushing the fluid.

 

[PaulthePUNISHER]

Thanks guys, I will give it a shot. Unfortunately, I got ride of my stock valve body. I tried using my cheap scan tool and no codes were found, but it still shifts erratically. I will start will dropping thrown and maybe flushing the fluid.

Pull the code with a quality scanner... It should be there... It is most likely not the vb....

 

[daylonwlightnin]

Mine did that in Florida all of a sudden other then my chip went bad when replaced it did the same thing once we put a better mass airflow and better plugs it got better. But now I believe I'm having transmission issues again but it could be my sc inner bearing that went bad my point is I learned with this truck it seems like one thing it's the other lol. Good luck man and I'm new to this but when I was looking at transmission pans and such I noticed they hold different amounts of fluid but like I said I'm new to this so that's probably considered comments sense in the car community lol.

 

[DailyBlown]

It is in the shop now. Apparently the harness and seal need to be replaced.

 

[DailyBlown]

Since having the harness replaced I am still getting the following codes: P0781 and P0782. It is significantly better, but still doesn't shift perfectly.

 

[Dusten]

Those codes are issues caused when there is an issue shifting. It could be solenoids, or other issues. Really at this point you'd need a trans shop to scan the trans and troubleshoot.