Thank you for the response,I know what the error codes stand for : P1518 (intake Runner control stuck open }
P1401 (DPFE sensor circuit) P1409 (EGR vacuum regulator)
The F150 4.2 V6 I recently purchased does not have an Intake runner control , So I think the the engine has a wrong PCM module installed? or should i just replace the P1401 and P1409 ?
Thanks - Rodrick