when i let go of the accel pedal it does this. the idle is at 1500 and it doesn't go down to the normal idle. my fuel pressure is ok, i think oxygen sensor could be bad, but i'm not sure about that. Could it be something in the engine or the radiator?

 

check for any broken lines..or lines with leaks

 

there was no leak when i checked inside the engine bay. .... it was throwing code 14?

 

i had someone tell me that i should adjust the throttle body bolt that is I think flat head..
it should fix it?