1987 Toyota Supra 7M-GE engine whine

[Bigbens06]

Well the car is soo hard to keep a constant idle because the Rpms jump erratically even if you have your foot in a solid position on the gas. I have tried the carb cleaner and it seemed to do nothing :/

Just finished tearing down the entire intake side again, checking all gaskets and vacuum lines, everything seems to be in order...put it back together and it continued to do this

The idle air control vavle was just replaced 3 days ago.

I know it's got to just be something stupid and easy and I will not give up until I have found the problem :/ thank you for the input though, hopefully I get some more responses with other opinions

[Green7mgte]

heres the tsrm for isc
http://www.cygnusx1.net/Supra/Librar...spx?S=FI&P=106

and this one is for the air induction system.
http://www.cygnusx1.net/Supra/Librar...aspx?S=FI&P=94

are you sucking in un-metered air between the afm and throttle body? that would cause shit idle. seen you said you checked all the way up and down the induction system tho..

id check the resistance for the isc. might be a chance that even if purchased new.....

[Bigbens06]

It has to be sucking air in or letting it out somewhere between the air flow meter and intake ports on the head. Looks like I replaced the vavle closest to the throttle body and not the isc, gonna check that out and get back with everybody. Thank you