Idle going up & down

[mach23]

thanks guys, will check that. one thing i noticed today, turning on the AC DOES stop the fluctuation. do u think i should try increasing the idle a bit? if so, can anyone explain? i have tried looking for the screw but cant find it.anyone has a pic of it, that wud b really helpful

[kennman]

ok,i noticed another thing- i raised my idle (i have an idle set screw ont the TB) to 1500 and now it sits perfectly still...
this means, there must be an inapropriate idle leak THROUGH the TB, when the screw is set to 1000rpm.
I will dismantle the TB tomorrow and try to clean it or sand it somehow.
p.s.: i dont have an IAC valve, nor A/C or ANYthing else.
any suggestions?

[mach23]

ok kennman, let me know if it works, i might do the same then

[mach23]

ok guys, i know what the prob was. I removed the TB completely and there was so much carbon in it...the flap was sticking on the carbon residue, cleaned it with petrol and now the idel is back to normal. thanks a lot guys for the help

[187sks]

Glad you got it figured out!

[kennman]

hmmm interesting! i hadnt time to remove and inspect my TB, but i found a clip on youtube, a guy has the same idle problems as i do. and also he is megasquirted, as i am.
link: YouTube - Project Mitsuhon
p.s.:his AF ratio is going up and down...