Originally Posted by civicace1214

if he says he used a wire harness from an old motor it may not be wired up for v-tech and an ls motor doesnt have v-tech unless u put a v-tech head on it that may be some reasons your v-tech isnt kicking in and i couldent understand much of the rest of the paragraph

Originally Posted by waaBAAH

the person that put in my old motor (LS) when i bought the car said he knew what he was doing with motor swaps. what i didnt know is that he never did a gsr swap into a civic hx. he used my hx harness from my original engine but vtec doesnt work. he told me vtec wasnt working because i had a broken tps sensor. i bought a new throttle body but my car idle jumps irractically from 2500 to 3000 rpms. it stays like this until i shut off the car. the cars idle was perfect before i swapped out the throttle bodys. has this happened to anybody before? i checked my tranny and it was leaking through a seal on the drivers side so i bought a new seal for the mechanic. the mechaic said this seal went in way to easily without the use of a hammer. matter of fact....he just pushed it in. i said "ok, thanks for your help mechanic." the next time i checked the seal....it moved out of place and is riding on the axle.