Just last week when i at a signal at idle i noticed that my idle was jumping from about 700-1500 constantly. then the next day when i was at a signal again it wasnt happening it was a smooth idle, it seems to be a intermittant problem. my car isnt throwing any codes either. any help is appreciated thnx

 

sounds like u have a loose vaccum connectiion somewhere...maybe one of the vac lines has a tear in it...could also be ur iacv..just take it off and clean it...if ur not throwin code 14 then its probably still in worin order just dirty