idleing problem....HELP

[5upra lov3r]

MY supra is idling at 400-500 rpm
can some one tell me if that is low
and if so how do i fix it?????
PLEASE HELP :1zhelp:

 

[slidebabyslide]

it is low. vacuum leak or idle screw not adjusted right. Crack or missing hoses.

 

[thevork]

check for CEL codes and post them up

 

[DBN]

idle is generally around 750-850 rpms...

 

[suprashy]

IIRC, on a turbo, idle should be 650.

 

[DBN]

IIRC, on a turbo, idle should be 650.

thanks for the correction.

 

[sneakypete]

the "idle screw adjustment" is a myth. that screw should not be turned.
check your isc. it could be dirty.
did this just start happening? was anything done to the car before it started happening?
-pete

 

[S.A. supra]

I'm gonna go with the dreaded hard to find vacuum leak.