Mystery metal on trans drain plug, Help!

[Yourrri]

Hey all, recently my 2004 5.9 with a fmvb 48re has been reluctant on the 1-2 shift and after getting it home it refused to 1-2 shift at all. I pulled the drain plug on the pan and while the fluid didn’t look great it wasn’t anything too unexpected for 25k miles on a fresh build but attached to the drain plug was this metal rod looking thing (see photo), I don’t know much about transmissions but it looks like it could be some sort of check valve or something. I’m just hoping someone could help me understand what part it is and weather its part of the valve body assembly or from somewhere else.

I’m new to the forums and wasn’t really sure where this would go, but I’d really appreciate any insite.

Thank you in advance!!!

 

[jws123]

I would take it back to whoever did the build it looks like a pin for something possibly a band? im not to sure to me it almost looks like this pin

Pardon Our Interruption...

 

[RamDiver]

Did you check the transmission fluid level before dumping it?

Most transmissions have a sensitivity to being under-filled, and this often results in poor shifting.

.

 

[Yourrri]

I would take it back to whoever did the build it looks like a pin for something possibly a band? im not to sure to me it almost looks like this pin

Pardon Our Interruption...

It was built before I bought it, I found after some digging it’s a “mumbly peg tool” that some kits came with to install the detent balls in the valve body!

 

[Yourrri]

Did you check the transmission fluid level before dumping it?

Most transmissions have a sensitivity to being under-filled, and this often results in poor shifting.

.

It was actually way over filled, that was my main suspicion. The fluid was getting aerated (it was bubbly on the dipstick) and I’m thinking that’s dropping the line pressure not letting it complete the shift.

It would shift if I shifted at around 2400rmp but that stopped working after about 10ish miles of driving before I could go home.

I’ve got a new filter and fluid I’m going to swap out and fill to the correct level and hope that solves that issue. The pin on the magnet is a tool used to install detent balls I found out, so I’m not all that worried about that!

 

[RamDiver]

There are several resident experts on that transmission who could likely identify how it would respond to an excessive overfill.

Obviously aerated fluid will compromise proper functionality of the transmission.

A filter change with the correct fluid level is a great place to start.

And removing any foreign objects or tools from the fluid supply is always a good idea.

Use the search utility in the upper-right corner to find threads discussing the ideal fluid and tips on fluid and filter changes.

Do you have any recourse with whomever rebuilt the tranny, if you have any continued difficulties?

Some transmission shops may care to protect their reputation.

.