Idle problems. PLEASE HELP

[Saltmaker]

I just got my car running today with the new short block. The problem I have is when I give the car a little gas the idle stays high and then sloowwwlyyy comes back down. Also when I am driving the car it rev's up to about 2200-2800 and stays there even if I put the car in neutral and just coast. Then when the car comes to a complete stop the idle comes back down slowly?? It is a 5 speed car. Also when I disconnect the Idle thing (forgot the name of the sensor) the car seems very responsive and rev's quickly and come RIGHT back down instantly? Is there something I need to add? Can you run with the sensor unplugged? This is very annoying. Its like having your cruise control on all the time. PLEASE HELP ME!!!! Also the car seems to be pulling hard as Hell. Thanks



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1994 Mustang D.S.S. pro bullet 306, TFS heads, cobra Intake, 24lb inj, E-303 cam, 70mm throttle body, 75mm maf, 93 computer conversion, 3:73 rear, Kenny Brown subframe connectors, Eibach drag springs, Megabite jr's, Long tube headers, off road exhaust, 2 chamber flow masters...