My engine is streetported and the intake is also ported. When its fully warmed up 3/4 of the time it idles roughly around 700rmps, the other 1/4 of the time it idles properly around 1000-1100rmps. Another thing is that in colder weather it almost always idles perfect (-0C). Any suggestions what this could be?


P.S- I cleaned the BAC valve and the motor only has 14000kms on it.

 

what type of idle control are u using?

i have a street port and not bac.

i use the butterflies and the idle mixture screw.

mine will very rarely stay at 1k and that is a tps thing. If i press the gas lightly it goes back down to 750rpm.

check and re-check your tps. Sounds like it might be a bit rich.

Try mixing the ratios. It takes a long time to get.

Mine idles about 50 rpm lower when cold and it will idle roughly with a streetport.....