Originally Posted by inline4me

I just fully rebult the motor with CTR pistons last month and it ran great for 200 miles until it started to go nuts. This issue was really pissing me off I could not figure it out. Then yesterday it dawned on me to check the 3 grounds on the engine. One on the valve cover, one on the transmission, and one on the thermostat. After close inspection, I found out that the bolt on the thermostat ground was loose. I took a little bit of sand paper and cleaned the contatct point and torqued down the sucker... And abrakadabra!!!! It runs perfect now. YAY!!!! The wirdest thing was that I was getting a CEL code 0 the day before (code for a bad ecu). I am glad that I did not drop $200 on a used ecu from ebay. I am still out of $200 for a distributer and $75 for a coil I did not need. Oh well, Live and Learn... I would have never known that a loose bolt could cause so many problems .