does anyone know what sensors are involved when my car goes into closed loop operation,my car runs great in open loop and like crap in closed loop ,,i've already replaced every sensor on this car and still can't figure this out,,no power. spits and pops through throttle body but only in closed loop,only code is 36(24x crankshaft position) but this is not my problem because like i said it runs real good in open loop and this sensor only helps cranking, idle,and low speed operation,, 93 3.4 auto only thing i havn't replaced is egr valve,,will this make my car run like this??? no egr codes btw

 

after some reading a open or shorted circuit on the pink and black wire (ckt632, pin c18) can cause poor performance and fuel economy. u can test the egr.
http://www.wonderhowto.com/how-to-te...-valve-267195/
http://www.asashop.org/autoinc/dec97/egr.htm