Warm engine power loss between 3-4K 964 Turbo 3.6

[Schattenwirt]

My first thread: My 964 Turbo occasionally acts up when the engine is warm. When you slowly apply more throttle between 3,000 and 4,000 rpm, it suddenly starts to jerk and stops accelerating, even though the boost gauge on the dashboard rises to 0.7 and stays there. If you push the throttle hard, it pulls strongly as usual. However, if you don’t fully press the accelerator, the same problem occurs again. I have replaced Lambda control units 96561810301, acceleration enrichment 96561813102 and Turbo relays 96561813001.
I hope someone has an idea, and best regards,
Philip

[Black_Hat]

a 1994 C2 turbo 3.6 uses a throttle valve switch. It is a fairly simple device. You should Ohm it out to verify.
IF
you don't have the factory manual you can use Gronk or Chat CPT to give you a detailed ohm and debug procedure.

Debugging issues like this is methodical and one step at a time

If the throttle valve switch checks out and is adjusted properly move on to next component.

next I would check WUR pressures especially warm
then look for intake leak
then measure fuel delivery at fuel head

[RarlyL8]

When you slowly apply more throttle between 3,000 and 4,000 rpm, it suddenly starts to jerk and stops accelerating, even though the boost gauge on the dashboard rises to 0.7 and stays there.

If you are slowly applying throttle there should be no boost. The boost gage rising to 0.7 and staying there would be an electrical glitch that may also be causing the stall. If your engine is stock you are getting into boost threshold at 3000rpm which transitions from negative to positive pressure very quickly when the throttle position changes. That tip-in is the dead spot. I second checking the TPS then move on to other electrical devices. Always check for vacuum leaks as well to eliminate that as a culprit.