Idle question

[Mob]

I just recently took possesion of an automatic 88T, last night actually :eek3dance

My question is, the 7m idles fine while in drive (about 900), but when in park she's racing at about 1500?

Any help is greatly appreciated...I've got my ideas but, its a new car to me.

 

[blacksupra]

Check the tps,ISC and vacumm leaks

 

[blacksupra]

Check the idle speed control

 

[kntmikado]

Mine idles about 1500 in the wintertime when she's cold.. and then gradually slows to around 800 or so. Therefore, my vote is on the ISC being gone.