TPS update, still stumbling just before upshift

[mhuppertz]

I replaced the TPS, turned the key to "run", put the CRT into output mode for the TPS, then adjusted it until I got the at rest idle voltage into range (.38).

Reconnected the radiator hose and vent tube, topped off the radiator and took it out. 

All the little driveability quirks are gone, except the hyper annoying engine stumble just before upshift under moderate to high throttle angle.

I have been reading posts in the board to get a clue about what the issue might be, I had replaced the ICM because the old one died, starting to wonder if I need to replace it again as a hail Mary. 

To the contrary of some of the posts, I could swear this car has torque management just before upshift and that is the issue...

This car is my daily driver right now, so I really need to get this issue sorted because it is frustrating and worrisome!!!

[AZVET]

Have you checked the knock sensor count?  If the sensor is bad then then the engine could be retarding itself at higher RPM and causing a stumble.

[mhuppertz]

On 5/26/2018 at 12:05 PM, AZVET said:

Have you checked the knock sensor count?  If the sensor is bad then then the engine could be retarding itself at higher RPM and causing a stumble.

No, wasn't aware of that setting.