Engine is revving under constant throttle

[Christos Adam]

I would appreciate if you guys could help me troubleshoot and issue that has been bothering me for the last few years.

know why this is happening? The throttle position sensor (TPS) doesn't show any fluctuation. Just to know in my LINK ECU throttle position sensor (TPS) gets values from 10 (throttle closed) to 100 for Wide open throttle (WOT). In my car with TPS=11 the engine revs a little bit higher than the idle, some goes for TPS=12.
The problem starts when the TPS is equal to 13 or 14 or 15. At that point I'm getting to this nasty condition where the engine is revving by it self. If I step barely a bit more on the throttle the TPS goes up to magic number 16 where the rpm explodes to the sky 4-5K rpm (but without any resonance at this time).

Here is a video showing what I described:

http://www.facebook.com/video/video.php ... 1&comments" onclick="window.open(this.href);return false;

Any comment would be appreciated.

PS How I lived all of these years is by giving the car an initial go and the switch to neutral while it moved at low speeds. Now I'm getting a small twin clutch and I don't want to keep doing that....

[Marshall Grice]

facebook videos don't work for me, but i'd say it's a fuel tuning problem. usually idle oscillations are when the ecu moves from one load cell that's too rich to one that's too lean.