Interseting Trans issue after rebuild 5-speed in an 01

[MMLMM]

Truck clunks hard into drive or reverse. When in drive, after a little bit of throttle, it will kick into neutral and bar under D flashes.

At first had an E valve stuck code, dropped pan, moved E valve in/out a couple times, closed up and now E valve code is gone but still clunks into geear and kicks into neutral.

No Codes
Speed sensors were swapped with know good ones (not new).
NSBU was swapped with a used one, then again swapped with known good one from running truck.
Connections seem to all be golden including on valve body.
Correct amount of fluid.


Kinda at a loss where this issue might be. Seems electrical.

Any ideas anyone wants to throw at me???

Thanks guys.

 

[Bonestock]

Ignition switch?

 

[THEFERMANATOR]

Stupid question, but have you reset the garage shift adapts in the TCM and then done a half dozen garage shifts through the gears? I know my BURB with an 01 OS takes awhile to do the garage shift relearn and will slam HARD into gear until it does a few garage shifts with a hot trans.

 

[MMLMM]

Not 100% sure on ign switch, but ign was working and seems to be working correctly???

TAPS have been reset

 

[MMLMM]

Another thing,

Input Speed is like 1300rpm and when you put into drive, it goes to zero. When I tested on a truck that runs correctly, Input is same as engine rpm, and normal in D.

 

[MMLMM]

Thanks Dan and Mike L. They both pointed to speed sensor which I had already changed which is why I was stumped.
However,
Here is a tip, if you are trying to track down a sensor issue, use a new sensor and not a "should be good" sensor

 

[1953drtelco]

Good info...

 

[Mike L.]

Thanks Dan and Mike L. They both pointed to speed sensor which I had already changed which is why I was stumped.
However,
Here is a tip, if you are trying to track down a sensor issue, use a new sensor and not a "should be good" sensor

Glad you got it fixed.

 

[MMLMM]

Glad you got it fixed.

:banghead: <-- this simile says it all!

Thanks again Mike, I tried to call back and let ya know.

I was about ready to pull the trans apart and see where I F'ed up, but truck runs Great now!