Hey guys! Here is the background on the car. We just put a rebuilt d16y8 in my son’s 99 coupe. At that time we also did a manual swap. The intake swapped to a manual intake and we did the 3 to 2 wire conversion. I am not aware of where the intake/throttle body came from. But we had to do the air injection delete on it.

We did a short startup last night and it seemed fine. After buttoning things up today we went to run it to check timing coolant etc and the rpm with no load at idle will fluctuate from 7-800rpm to about 23-2500rpm. It threw the p0505 code as well. I hope I have all the info if not ask away.

 

clean the IAC valve, rebleed the coolant system