I have installed my automatic transmission in my 94, I have changed the plugs and will be going though vacuum lines this weekend. I have no HP, transmission seems to be working fine and I have tested the computer as well and that seems good. However my service engine soon light is on and the code scanner isn't reading any codes??? I was just wondering if anyone out there has any ideas or suggestions. And I checked compression and it's good we checked all the electrical connections nothing out of the ordinary, other than going thru the vacuum lines I am at a loss.