1988GTstang

im havin a lil problem at idle where it will just start surging randlomly...sometimes it could be 50 rpms and then next it could be 500 rpms...i just replaced my throttle position sensor and had my IAC motor rewired because it wasnt right...any suggestions where to start to fix it?

mjr46

hmmmm..try a koer test and check for codes and make sure I ac is wired and throttle body is clean