I recently changed my wires (to Magnacore 8mm), spark plugs (to Bosch platinum plus 4s), oil, filter (to K&N), and MAF. However, I'm now having the bone mentioned fault codes (P1514, 1551, and 1884) and rough idling. Anyone knows wht could be causing this?

 

Concentrate on the 1514 and 1551 codes. They relate to wiring or connector issues with the IACV. Tech sheet from ECU manual attached. The 1884 code is most likely the result of this, the tranny computer and engine computer are always whispering to each other about engine load, etc.

 

Savannah Buzz thanks a bunch. I will keep you posted on my progress