Cleaning the IAC

[ponysarepretty]

Is there a tutorial or some kind of guide online?

 

[ponysarepretty]

Ok I know how to take it off now, but I am getting conflicting reports, some say to lift up the solenoid (where is it?) and otehrs say to just spray it.. do i spray into the hole that goes into the plenum as well? I can see some sooty buildup (i assume its carbon?)

 

[todd4566]

Spray the carbon out of the tunnel the disk moves in, and try to clean the shaft the black disk is attached too - that's the main part that causes the valve to stick. Replacement is the #1 fix, but a good cleaning is worth a try. Obviously, make your best effort to keep the carb cleaner out of the solenoid.

 

[streetstang03]

just a heads up:

i've heard that brake parts cleaner is bad for theIAC. i dont know how true that is though.

 

[ponysarepretty]

Spray the carbon out of the tunnel the disk moves in, and try to clean the shaft the black disk is attached too - that's the main part that causes the valve to stick. Replacement is the #1 fix, but a good cleaning is worth a try. Obviously, make your best effort to keep the carb cleaner out of the solenoid.

where is the solenoid? Can someone take a pic for me

 

[todd4566]

The solenoid is the metal barrel where the electric connector is plugged in.. to avoid getting cleaner in there, hold the IAC upside down when spraying.

 

[ponysarepretty]

got it

another question is... is it normal that the IAC only has one hole? There are two holes, but only through one of them can i see the shaft with the spring, can't see any disc? Also leading into the plenum, one of the holes is blocked off seemingly?

 

[ponysarepretty]

and is there a gasket betweenthe IAC and the upper plenum? and where do i get a new gasket?

 

[ponysarepretty]

Now I have pics: They look different from the Mach1 IAC... which have two ports, mine only has one? is that right?

 

[todd4566]

Now I have pics: They look different from the Mach1 IAC... which have two ports, mine only has one? is that right?

Yes that's right. The Gt's IAC uses a hose to connect to the intake tube; the Mach 1 IAC connects strictly to the manifold.

 

[ponysarepretty]

thanks man

 

[timeless2]

Good luck cleaning it; the common solution to fix it, unfortunately, is replacement.

 

[ponysarepretty]

Right now I am planning on preventative maintance, there aren't any signs of IAC trouble yet other than once when it seemed to surge at idle.

 

[sgarlic]

You should use throttle body cleaner, not brake cleaner or carb. cleaner. Just douse it, swish it around, then use a Q-Tip to clean the **** out.