I've try to unplug the wires and check the connector... seem okay. after i'Ve replug the wires, the "check engine" light don't turn on... only after 5 or 10 minutes. Normally, after I start the car, the light turn on after only few secondes (30sec to 1 minute)

But the thing I don't understand, why the light ONLY turn on when I move the car? If i start the car but stay in place, the light don't turn on... but if I take a ride, at this moment the light turn on.

Other thing, when I start the car, the RPM go a little bit higher than normal, and drop after 5 sec. I go in reverse to exit my parking place, when i'm declutching the RPM go higher again. I go in first gear and start moving and at this moment the light go on, and the light don't turn off until I turn the key off.

No other error code I get... only 157 in KOEO. In the KOER test, I have no error.

But why it's only when i'm moving the car that the light go on?

And my native language is french... i'm from Montreal, in Quebec. Not really in montreal, but 30 minutes from. Peoples from outside most recognize Montreal, because i don't think "st-jean-sur-richelieu" will be recognize there! Montreal yes

Thank to help me for my problem.