replaced the engine in a 98 Civic ES 2 dr. with a 1999 engine 4 dr.
replaced computer out of 1999
Problems: shifter lock won't disengage
tach and speedometer won't work
scanner fails when you hook it up.
Do i need to change the computer?

 

You replaced OBD2A components with OBD2B components. How exactly did you make all of the plugs fit? Did you replace the harnesses as well?

 

did you use your factory harness and not the one out of the 99?