My iac sensor is missing now, so i plugged the whole and now its seems like my car runs ruff sometimes, other times it runs great. Could this be the casue of my problem.
I also notice that my car now takes a few turns to start the car when it was starting when i first hit the ignition. I friend told me that i could have a bad injector, is this true and could this also cause the ruff idle sometimes.

 

How in the world can it run right without the IAC? I would not even bother trying to troubleshoot any problems until it is replaced.