skatepony

As soon as i start up my car it idles around 500rpms and shake slike hell and is very hard to keep running until it warms up, then it idles perfectly at 900rpms and is fine......egr is fine, tb is brand new, iac is cleaned, tps is brand new....is there any adjustment or choke or something...i say that because recently at a car show i noticed a second cable right next to the throttle cable under the throttlebody on another fox body where mine ahs an empty space......right away im thinking vaccum leak.....any ideas where or any other ideas what is could be............thanks

86gt5.0HO

the second cable is the Throttle Valve cable for Automatic Transmissions.

silver91gt

it could be your air intake temp sensor.
did you try cleaning your maf?

88GT40

it could be either your Air Charge Temp sensor, or Engine Coolant Temp sensor, they are both located on the lower intake manifold.

skatepony

the maf is also brand new but ill check the other sensors thanks guys