I dont know why but I cant seem to get my 95 to display any eec tuning error codes. Im not even able to start the test. I have been getting a intermittant check engine light between 1500 and 2500 rpm and I am trying to diagnose the problem. Also the car drops idol and shakes every once and a while. Any suggestions on how to get the test to work (I have a tester and I also did the bridge thing in the manual)?