lexar13

where is this located at???

and i am running 91 octane

xviper

Look on the driver's side of the intake manifold. You'll see some "U" shaped black hoses. This is part of the IAC mechanism. Just follow the hoses and you'll see a solenoid (wiring harness going to it) and other temp sensing gear.

lexar13

what are the diffrences between a bad IAC and MAS sensor?

xviper

The Idle Air Control system takes care of the idle during cold starts and other situations like compensating for A/C activity and rpm decrease in hot temps, etc.
We don't have a MAS (mass airflow sensor). We have a MAP (manifold absolute pressure). Both function sort of the same in that it detects the amount of air that goes into the intake and thus allows the ECU to calculate the amount of fuel needed.

lexar13

i went to see if i heard the ticking coming from the IAC, i got nothing. i started messing with the harness for the map sensor, moving it front and back and it was making a strong change in how my car held idle. so i guess all thats left would be for me to ask if i need another map sensor clip & harness or just the map sensor it self? and should i still have the IAC checked out?

xviper

I think you just showed what the solution most likely is. Get a new MAP sensor and the new attachment system (OEM zip tie) and go from there. Target one thing at a time or you'll never know what it was that fixed it.

ps. It may also be that the pins inside the wiring harness have gotten a bit loose or sloppy. You might want to use a bit of di-electric grease in there when you put the new stuff on.

lexar13

new map sensor didnt help at all so its at honda getting looked at right now. i told them to look at the IAC.