for some reason my idle will not calm down after I been boosting... I dont understand it? I looked at the turbo with the filter off and it was spinning hard still at idle... and did for almost 20-25 seconds after shutdown (this is not a bb unit as far as I know).

if I shut off the car and do a restart (after turbo timer stops)... it will calm right down to 750-800... sometimes even as low as 600.

could it be cause I have the idle air vavle deal just running open right now cause I am not sure if it needs to be in the vaccum route or plum'd into the intake track?

any ideas?

 

I somewhat have the same thing. Sometimes I'll mash on it, then the idle will be a little above 1000. Then after 5 seconds or so it settles back down. It's odd. Just curious if anyone would know what it is.

 

great question ttt

 

What kind of injectors and fuel management?

 

old topic and yeah I know I bumping back up... forgot about this thread kinda.

it was with an 450cc injectors and a afc.

 

I heard it had some thing to do with the idle air control valve. one guy was talking about glueing some washers onto it or somthing...... i dunno but i have a similar problem. after boosting when i stop my idle jumps from 1000 to 1300 back and forth every few seconds.

 

its probably your idle air control unit. borrow a friends IAC and see if it stops. if not then its something else

Goodluck