94' Altima SE usually sells between $8,500 to $11,500, but your kilometrage is fairly high.
Also, "both the 1993 and '94 Altima have a throttle cable that can pull out of its' housing (due to engine movement) and prevent it returning to the idle position, when the gas pedal is released." [http://www.canadiandriver.com/articles/bm/93-96altima.htm]