yet another Eurovan 01p problems.....please help me diagnose....

[VRoom-vroom]

I got a 2000 eurovan with 220k on it that I use as a work car.

Every since I got it, it had the typical 01p tranny problems..... Harsh shifts between 1-2 and slipping.
After the original tranny failed, I got a used tranny replacement.

The new tranny drives ok, but has the same 1-2 harsh shift as did the old tranny. So I did some research
And tried to remedy it.

Changed oil and filter
Replaced valvebody with remanufactured unit.
Added a air to water cooler kit
Replaced the ribbon harness
Switched the TCM with different unit ( same part number)

Non of this seem to make any difference.

From what I understand..... The TCM is suppose to open solenoid 5 in between every shift,which it does.
Except between 1-2 ,2-1 shifts.
I can't figure out why it wouldnt activate the solenoid between those gears.

I would really appreciate some input.....

[Variety=Spice]

what city & state are you in, just curious. I know a few folks around the country who work magic with those Eurovans, one of whom is our forum resident CoolAirVW.

[VRoom-vroom]

Western suburbs of Chicago

[CoolAirVw]

How are your verifing control of solenoid 5?

I've never specifically checked on a 01P but all the 01ms drop pressure with that solenoid on the 1-2 shift as well as the others.

There were some early 01m--096 computers that through some error (mechanical or software???) would stop dropping pressure. Maybe yours has that problem as well. (yes, I know you changed the TCM)

Have you checked TCM codes with vag-com?

[VRoom-vroom]

I,ve only verified solenoid 5 with vag com. Tcm sends command to open every shift besides 2-1,1-2
There aren't any stored codes either......although, most of the time it says that module is not ready for interrogation