[98whitecobra]

hey guys ive been having a few problems with my 98 mustang cobra, its been running really rough here latley,large loss of hp,it has been idleing high rpms, it has been puting out very heavy gas exhaust fumes and is picking up a very bad miss so i reset the computer by unplugging the battery then let it run for about 15 mins and the check engine light came back on and i got these codes....P-1000 monitor check not comp., P1260 thft det veh. immob, P1506 Idle Air Ctrl overspd er, P1516 intake man run ctrl in er, P1519 Imrc stuck closed B2, so if anyone can help me out or if anyone knows where there might be a problem solver or tech help for these dianostic codes. thanks for any help

[lxarlo]

i would look into your idle air control, clean it out real good with brake cleaner. and the imrcs (intake manifold runner control) under the upper intake. remove the intake and try to clean them out. i know on the 4.2s the egr passages are in the imrcs and they tend to get gunked up and cause sticking.