Just recently, my Expedition (92K miles) has begun to buck and hesitate under load. I have not gotten a CEL and no codes come up on my OBD-II. I have been reading some of the other posts and trying some of their remedies. I have changed the PCV valve (it needed it), all the boots and springs on the COPs and the TPS. So far I have spent just under 100 bucks on parts on items that would have been changed at the 100K service, so not all is lost. I just trying to avoid the dealership swapping parts on my dime with no avail. I'm looking to replace the PCV tube leading from the valve to the back of the intake in hopes it might be aleak. If anyone has any other ideas, please let me know. Thanks

Scott