Had a upstream 02 sensor issue with code p0132 which gives me a erratic idle randomly. I changed out the 02 sensor upstream sensor1 bank one. Reset the code and it has come back on and off a few times. Got fed up went to a mechanic had them do a diagnostics, They spent 2 hrs on the truck and said they are boggled and didnt charge me because they have no idea what could be wrong . They told me all the sensor on the emmission are working correctly including idle sensor , 02 ect. I think it could be a ground somewhere because the idle fluxuating happens randomly then clears itself. I also say this because the truck was involved in an accident on the passenger front end and rear. Im wondering if the body shop might have pinched a wire in the front quarter panel orin the bed somewhere. Does anyone know of wiring passing through these areas that couldbecausing this? Any info would be appreciated thanks

 

Have you checked for vacuum leaks?

 

I havent personally because it been freezing here and i dont have a garage but the mechanic told me there wasnt any