im havin a idle prob on this 92 civic si w/ ls motor i just bought....i checked everything...i even switched out the tps.....now i noticed today on the dizzy it says 95 civic 1.5.....WTF?? i think some dumbazz put a sohc 1.5 on it. Is this the cause of the revvin idle? i didnt even think a sohc dizzy would fit on a dohc motor....
unless its a sohc cap on the dohc dizzy...

 

sounds like you have a vaccum leak