s14 sr20det check engine light knock sensor

[hektik13]

ok so i had a check engine light plugged in the scanner showed up as a knock sensor i replaced it with a brand new one... before this the light would come on every once in awhile, so i thought it was bad... but it still doing it, comes on every once awhile give it gas goes away let go of gas comes back on... sometimes it comes on sometimes i can drive with it off... usually only does this when cold... i tried deleting the code twice still comes back on... i dunno what to do any help please thanks