KA24DE Problems .. HELP

My Winter car is Running … :lol:

Okay here is the Setup …
1989 Body …
93 KA24DE Stock Everything

When I 1st start the car in the morning or when it sits around for a few
hours the rpms Jumps to 2000 back to almost 0 back to 2000 and back to
almost 0 the car almost stoles before the RPM Stabilizes …

and this only happends when i just start the car when the car worms up its all good … :cry:

what is causing this …
can anyone help …