One morning about 2 weeks ago my car wouldn't start. I believed it was due to a bent valve issue I had. It would only come on for a second and then die. Later that night after trying a couple times I finally got it to start and idle but when I did it ran funny. It idles high and doesn't register it is running at operating temp. it stays at 2k like the motor is cold. and the cluster is stuck at 0 and the miles aren't registering. the only thing that is working is the rpm. So I dropped my head off at the shop and had my valve train rebuilt. After getting the car back together a couple nights ago and started I am still getting the same codes and results but the motor sounds crisp. Its throwing three codes, a p0118, p0122 and a p500.

I heard about this problem from someone and they told me about soldering in a new wiring harness into the ecu I have but im not sure that is a fix for this situation. If anyone has heard of this or had this same problem please let me know.

 

Did you attach the ground to the back of the head?