Here is the problem I installed a new wiring harness and when I hooked the computer up it ran fine. scantool was working then about 5min later the car started running really bad then it cleared up but now my scantool shows no data. I hooked one of my spare computers up and it showed data and then 5min later same thing happened.Once the car clears up it runs fine just no data. I dont want to usd another computer until I find out whats causing this. Any info would be helpful.