WTF!?!?! 4k high idle

[kpc_0721]

just changed the head gasket not to long ago on my KA24DE and got it running up to par so took it out for a drive a few times. Just went out again and everything seemed good so did a little pull in 3rd gear.

as soon as I let off the gas I put it back into neutral but I noticed after a second that the revs were staying around 3k so I checked to make sure it was going into neutral and all the gears. No problem there.

Pull over to see if the throttle was sticking and everything was ok, checked the pedal and everything was ok.

Got it home pulled the intake off to check it out.

Plate not sticking or cable. Still does it while the cable is disconnected from the TB

Unplugged TPS to see if it would change and no change.

Adjusted the IACV with no luck.

The car was idleing fine before I took it out and it happend right after I did the pull in 3rd.

Now everytime I start it goes to around 4000 RPM and stops so I have to shut it off right away.

No clue whats going on with it so please help me out guys.

[bananamonkey]

you try checking the MAF sensor? because when i had that problem it was that either unplugged or something wrong with it

[xs240]

got a picture of the MAF sensor?> I'm having the same problem...

[kpc_0721]

Yea when I unplug it, it will drop the idle to about 2000.

I don't believe its the problem.

How did you fix it when you had that problem?

[kpc_0721]

got a picture of the MAF sensor?>

What for?

I know its the correct MAF, its been on the car for the past 3 years I have owned the car.

Like I said the car was running fine before I did the pull and that's when it started holding the idle at 4000.

I barely had to even use the throttle on my way home after it happened.

[kpc_0721]

bump before going to work.

[kpc_0721]

So I'm confused, the car sat a few days because I didn't feel like working on it after work and started it up and it was at about 1400rpm.

unplugged the maf and for a split second it changed then went right back to the 1400rpm. Turned the car off, started it back up and it jumped right up to 4000rpms.

When it was running at 1400rpms it wasn't very smooth and was running very rich and white smoke coming out of the exhaust.

I know white smoke usually means a bad headgasket but it doesn't smoke when it is idleing at 4000.

Any clue what is going on with my car?

If the head gasket did go bad could it cause the car to idle like that?

The weird thing is that if the car sits for a day or 2 and I start it it won't shoot up to 4000rpms but to around 1400. Then after I shut the car off and start it, it goes back up to 4000rpms

Don't think it is a vacuum leak, just gone done spraying the piss out of the intake manifold with brake cleaner and no change in idle.

[I LUV MY S13]

i had tha same issue..replaced tha maf and iacv..runs like a champ now

[flip3d]

i vote for iacv

[xs240]

Is it possible to remove the IACV all together and be done with this shit? Don't old cars run without this sort of thing? Edumacate me.