85 Seville Idle Wanders

[bgcaddyguy]

My 85 Seville 4100's Idle Wanders About. It Will Go Real High, Back Down To Less Than Normal, And Then Race Again. It Will Do This For A Couple Of Minutes Until On One Of The Low Idle Cycles, It Stalls. I've Heard Egr, Oxy Sensor, Vacuum Leak, What Do You Guys Think.

[DFBonnett]

First thing I'd do is clean the throttle bores and plates with some spray carb cleaner and a toothbrush.

[outatyme]

There also is a thing you can buy to hold the idle in place. My family's Wagoneer has that.

[maxwedge]

Check this thread 6 months old, dead.