my car idles up for no reason i can turn the car off then restart the eng it wil on 1996 Cadillac Eldorado

will idle back down I cleaned thottle body it seems to help for a while I want to know if the egr could be the problem I found a broke vac line thought that was it but its still idles up help please triump68 thanks

Asked by for the 1996 Cadillac Eldorado