resetting, the IAC?

[Damien214]

how do I do it, my car idles at 1000 rpm.

[Dominic]

what is an IAC?

[Bene]

Idle Adapting Control?? [img]tongue.gif[/img] Just guessing.

[Damien214]

Idle Air Control :D

[bluecmaro96]

ok guys this is the last time i write this :D
for automatices here are the steps.
1.ignition must be in off position
2.restore battery terminal
3.turn off a/c controls
4.set parking brake and block wheels
5.start engine
6.shift tranny into d
7.let engine idle 10 min
8.turn a/c controls on
9.let engine idle 10 min
10.shift into p
11. let idle 10 min
12.turn a/c off
13.let idle 10 min
14.turn engine off 30 seconds
for manuals
1. same as above
2. same as above
3.turn off a/c controls
4.same as above
5. put tranny in n
6.start engine
7.turn a/c controls on
8.let idle 10 min
9.turn a/c off
10.let idle 10 min
11.turn engine off 30 seconds

[AMinor65]

Thanks for the info. I thought that it was supposed to idle at 1000 rpm also, because my old Mustang GT did. Just found out that it was supposed to be 700-something.

[QuasarBlue95]

mine idles at 1000, too. and i can't find anywhere in my chilton's what it's supposed to idle at? anyone know?

[Infernal]

Mine idles at 800. Then 810. Then 780. Then 825. Then 805. Then 795...

It's annoying as hell. :(

[Dominic]

so the PCM screws up on occasion causing the IAC to change the car's idle??

[Damien214]

<blockquote>quote:</font><hr>Originally posted by TheCardinal:
so the PCM screws up on occasion causing the IAC to change the car's idle??<hr></blockquote>

Apparently

[SuperRat]

My idle would drop to 0 and jump to 1500 and down to 500 and so on. The solution was to remove the IAC from the TB (throttle body) and clean it really good with carb cleaner. Push the pintle in so you get the clearance needed when reinstalling. This solved my problem.

Since this is part of the fuel system you might suspect other components are dirty. It's a good idea to clean the TB itself by spraying carb cleaner into it. I noticed improvement from this as well.

I also decided to pour in a bottle of Slick 50 fuel system cleaner to see if it would help.

Check inside the airduct for cleanliness, if it is dirty, you may want to clean this too.

[Mike Wenski]

the IAC is part of the fuel system? how do you figure? Fuel doesn't run through it. the only connection to the fuel system it could have is that the computer controls both the IAC and the fuel injectors.

[Damien214]

resetting did no good, still 1000 rpm. I'll try cleaning

[bluecmaro96]

could be pcv valve

[The swede]

<blockquote>quote:</font><hr>Originally posted by SuperRat:
My idle would drop to 0 and jump to 1500 and down to 500 and so on. The solution was to remove the IAC from the TB (throttle body) and clean it really good with carb cleaner. Push the pintle in so you get the clearance needed when reinstalling. This solved my problem.

Since this is part of the fuel system you might suspect other components are dirty. It's a good idea to clean the TB itself by spraying carb cleaner into it. I noticed improvement from this as well.

I also decided to pour in a bottle of Slick 50 fuel system cleaner to see if it would help.

Check inside the airduct for cleanliness, if it is dirty, you may want to clean this too.<hr></blockquote>

[ August 20, 2002: Message edited by: The swede ]

[ August 20, 2002: Message edited by: The swede ]</p>