2200rpm idle & stumbles around 3200 when driving, making progress, idle down to 1100, still stumbles above 3k Options

[RazorbackFan78]

Hey guys - I'm trying to track down the cause of my high idle.


I've checked the TPS and I get 20 clicks pre-ignition

I've pulled the AAR, soaked it in PBlaster, froze it, put 12v through it, confirming it opens and closes correctly. It also tested around 17ohms

I cleaned grounds at headlights, battery neg, driverside engine bay, and visually confirmed trans strap is brand spankin' new (thanks Curt)

Now i'm checking hoses for vac leaks and only one seems to drop the idle (drops it to a steady 1100rpm). It's the hose from the airbox elbow that Y's into the AAR and dizzy. See picture.

Is this sounding like my dizzy could use a good cleaning? I have other items on my troubleshooting list like MPS, fuel filter and decel valve but wanted to check in with you guys after discovering the vac issue. Thanks for your input. I'm still fairly new to this type of engine....so I'm learning as I go (IMG:style_emoticons/default/biggrin.gif)


BACKSTORY: for those of you who like a novel....car had points and idle would bounce between 100-900rpm more often than not. Anytime I'd reach 3200rpm while driving it would studder and loose power, in all gears, and it would also occasionally do it under a heavy foot at lower rpms. I replaced points with Pertronix 1847V and now the cold idle sits on 1100 like a rock for the first minute or so, then over the next minute it climbs to 2200 and holds steady. It still studders around 3200 when driving and occasionally does it at lower rpms when I'm really on the pedal.