High idle help

[Whitaker717]

Hi guys I need some emergency help. The good news is I fixed the vent issue. The bad news is I had to take the lower dash balance off so everything was disconnected. Once I got everything put back together the idle is so high it sounds like a jet plane. It’s almost like the computer isn’t talking to the engine or something. I don’t see any loose or disconnected hoses. I unplugged the battery , the iac, and tps and no luck. Can someone give me a troubleshooting hand. 

[Whitaker717]

So going through some trouble shooting, looked at the hoses they looked good, tps was like 4.87 I think, cleaned the iac, and somehow it is back normal. Are those iac’s that temperamental? Anyone have any reccomendations for a new one?Or even have a working used one. 

[Ωhm]

15 minutes ago, Whitaker717 said:

tps was like 4.87 I think,

 

If true, something had your throttle plate held wide open (WOT).

[Whitaker717]

What’s weird is I drove all day turned it off and when I turned it back on it sounded like an airplane. Idling time now though. 

[pizzaman09]

Check to make sure something isn't catching the throttle linkage, either in the footwell or engine bay.

[watchamakalit]

Loose manifold bolts causing a intermittent vacuum leak can cause a surging or occasionally high idle.

[camjeep3]

20 hours ago, pizzaman09 said:

Check to make sure something isn't catching the throttle linkage, either in the footwell or engine bay.

This is what I was thinking since you were under the dash already 

[BizarroStormy]

Make sure your throttle position sensor is not binding, that will cause your computer to open your idle air control valve all the way up.