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Tps After everything I'm reading, I'm really starting to think along your lines - that the TPS is probably the culprit. I'll be testing it out next week.

So, things have turned a bit strange at this point. Before moving forward with checking the TPS and replacing the PCV valve, I looked over all the hoses/intakes/housings to make sure things where secured. It turns out, I did not correctly secure the MFC housing/intake tube on both ends. Now...

In regard to the gasket, initially I had left the old one on in a bit of haste. I thought that may have been the problem, so I installed the new gasket and made sure everything was sealed - same result. Thanks for the link, I was finally able to find the PCV in the same spot. I'll be...

I've looked through the forum before and found some possible solutions, which I have tried to no avail. I have a Ford Explorer Sport 2001 (4.0 SOHC), which I recently replaced the IAC. About a week after, I started receiving the "P1506 error code: Idle Air Contol Overspeed Error" and my idle...