Toyota Supra Engine Idle High

I Have A 93 Supra. The Car Was Running Perfect 3 Days Ago. I Went To Crank It Up About An Hour After Drving It Home And The Idle Was Realy...

I Just Put The Engine In The Car An When I Started It The Idul Was Going Up An Down.the R.p.m S Would Rev Up Then Drop Back Down.

I Have A 1987 Toyota Supra N/a, The Problems Started After A Routing Hg Change. At First It Was A Pinched Vacum Hose But Now It Still Idels...