Update: After cleaning the throttle connector and went a few time a wot and again today, the problem (limp mode) did not re-appear. that is good news ;-)
But one funny thing happened when i did the wot test today... when i tried it, i decided to do like i do with my BMW, to hold on the brakes for 1/2 a second while giving it gas just to raise the rpm a bit before and let go the brakes (automatic tranny) and i noticed that the rpm would not go up while i press the brakes. Again, i did this many time with my BMw and it just takeoff like crazy.
Is there in the sky some kind of a rev. limiter programmed whenever we hold on the brakes ???