Had a problem with my car which we thought it was ECU related. sent it away to be tested but they said that there were no problems with it. Got my ECU back and put it back on the car. and it seems to be running fine but idle is a bit low- around 500rpm. i did adjust the throttle cable to compensate for this but it now seems to rev up and down a bit.
Original problem was that the car was cutting out and turning the traction control light on permanently then the car would not start at all.
is there any way to change the idle speed?