Freelander 1 td4 auto

while trying to fix this problem of sometimes no go when I put my foot down I am beginning to think it may be the go peddle so I brought one to suit but they sent the wrong one and it is for a manual part number SAB500080 the one for my car should be SAB500010 does anybody know if there is a difference .

first of all BUMP but then I began looking on the internet and the number for my accelerator potentiometer was SAB500010PMA which is superseded by SAB500080PMA so panic over I can try that one to see if it is that giving the trouble.