1979 eldo super high idle will not kick down

[CHEVY1]

Hello

I was hoping someone could tell me what possibly is keeping the engine at a high
RPM after starting? It will not kick down to idle and it must be at like 3000 rpm
I am affraid to put back into gear as it just jumps and will not go down even in gear.
any help would be appreciated. 1979 Eldo

[maxwedge]

Usual suspect is a bad idle speed control motor, you will see it on the l/s of the linkage on the intake manifold.

[CHEVY1]

thanks Maxwedge. My da picks up car on Saturday, i will mention to him before putting on trailer. can this be disconnected?

[maxwedge]

No, it will not help.