this morning I changed out my CPS and my truck still doesnt start, the codes I got p1211 and p1212 could I have a fuel preasure problem? posibley a different sensor or preasure regulator?
ICP is located on the top of the left head, if you just unplug it that should throw the IPR into a default limp mode and you should get a rough idle condition. Also make sure to look at the connector on the IPR valve itself which is located on the back of the HPOP.