new engine, rebuilt bottom end .010 over. ENGNBLDR.com STREETRV head, new injectors, cap rotor blah blah blah... Replaced the o2 sensor and the exhaust manifold (was cracked), still getting a code 12. I have cleared multiple times. What is wrong? Why won't this code go away?... It did take a little longer to come on this time though. I'm going crazy trying to get this damn thing running. Anyone had problems with the Street RV head causing problems?

I am double posting in the 84-85 and 86-95 forums since this engine was used in all the years...

 

On the 85 FSM Code 12 is the knock sensor.

 

thanks, I got them mixed up in my head... Going to work on it today.

 

turns out the knock sensor wire just wasn't connected properly... Problem was fixed in less than 10minutes. Thanks

 

Thanks for letting us know. Glad to help.