idles at 1800

[apex_7]

My RB20 idles at 1500-2100rpms. I think it's because I don't have my CTS hooked up and it thinks it's cold all the time. Does anyone know how to fix this problem? Oh, and the little screw on the back of the ECU didn't do anything when I turned it.

[JonPowell]

On my RB25 it did the same thing until I got EVERYTHING hooked up and ran it for about 10 mins straight. I guess there is some kind of safety mode when the computer has been disconnected for a while. after it settled right into an idle around 600-800 rpm trying to level off at 700.

[wga240]

Hmm my RB20 has a bit of a weird idle also. It idles at around 900-1000 until it's warmed up, then the idle cycles between 600 and 1000 slowly. I dunno wtf is causing that. My idle adjustment screw also does nothing, but I have an aftermarket ECU so dunno if that's why.

[RubHamuSan]

you may have a bad TPS.

[wga240]

you may have a bad TPS.

Me or Apex_7?

[apex_7]

I don't think it has to do w/ the tps. Maybe the throttle cable though, I'll check that tomorrow.